B - complex
30 days | 1 capsule per day
Energy
Mind
Blood
Skin
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8 B-Vitamins + PABA
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Contributes to normal energy metabolism
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Supports the normal functioning of the nervous system
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Aids in the maintenance of healthy skin
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Change or cancel anytime, no binding
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We adjust your formula based on how you feel
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28 Biodegradable daily packs
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Low-waste refill option
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Personal food, lifestyle plans and more included
Your Personal Plan, Fairly Priced
Transparent, volume-based pricing that rewards you for building a complete plan.
Most supplement companies charge the same per product whether you buy one or ten. We think that's unfair — packaging, shipping, and handling costs are shared across your entire order.
How it works: The more products in your personalized plan, the lower the cost of each one. Shared costs like daily pouches, your dispenser box, and shipping are split across everything in your box.
No hidden fees. No inflated single-product pricing to make bundles look like deals. Just honest math.
How does this look in practice?
Packaging costs like your biodegradable pouches, dispenser box, and shipping are split across all products. Fewer products = higher cost each. More products = lower cost each. Simple.
We stand by our science — enjoy 90 days risk-free. Read more
Nutritional Information
1 capsule typically provides:
Per Capsule NRV*
- Vitamin B1 (Thiamin) - 1.4mg - 127% *NRV
- Vitamin B2 (Riboflavin) - 1.6mg - 114% *NRV
- Vitamin B3 (Niacin) - 18mg NE - 113% *NRV
- Vitamin B6 - 2mg - 143% *NRV
- Vitamin B9 (Folic Acid) - 200µg - 100% *NRV
- Vitamin B12 - 2.5µg - 100% *NRV
- Biotin - 150µg - 300% *NRV
- Vitamin B5 (Pantothenic Acid) - 6mg - 100% *NRV
- PABA - 30mg - N/A% *NRV
% *NRV = EU Nutrient Reference Value
Ingredients:
Bulking Agent: Maltodextrin, Capsule Shell: Hydroxypropyl Methylcellulose, Para-Aminobenzoic Acid, Niacin (as Nicotinamide), Pantothenic Acid (as Calcium Pantothenate), Anti-Caking Agent: Magnesium Stearate, Vitamin B6 (as Pyridoxine
Hydrochloride), Thiamin (as Hydrochloride), Riboflavin, Folic Acid, Biotin, Vitamin B12 (as Cyanocobalamin).
Allergy Advice:
Although rigorous precautions are taken to prevent any cross-contamination, this product is manufactured in a facility that handles allergy-based materials.
Cautions:
Always consult your health practitioner before taking nutritional supplements, especially if you are taking medication or are under medical supervision. Not recommended for children, pregnant or lactating women. You should not take supplements as a substitute for a varied balanced diet or healthy lifestyle. Store in a cool dry place, out of reach of children.
How to Use It
Directions:
Adults, take 1 capsule per day with food and water, at least 4 hours before bedtime.
Do not exceed recommended intake.
Take it with a meal, preferably in the morning. Taking it with food, especially one that contains healthy fats may help your body absorb the nutrients more efficiently.
Morning is ideal for those using it as part of their energy-support routine.
- Avoid taking it late in the evening - Some people report feeling more alert when taking B-Complex, so if you're sensitive to that effect, it’s best to avoid taking it close to bedtime, we recommend at least 4 hours before bedtime.
- Stay consistent—taking it around the same time each day helps build the habit
- Combine with a healthy lifestyle for best results
- If unsure about your vitamin B needs, try our free health assessment on the website.
Shipping
We ship with all major carriers, including PostNord, DAO, GLS, and Bring, offering 1–2 business day delivery.
Orders are prepared and sent out within 24–48 hours.
Cost varies between DKK 39-52.00
Free Delivery on orders above DKK 500
*The delivery days count from the moment the carrier has received our package.
We also deliver throughout Europe using trusted partners like GLS and EcoParcel.
Delivery times vary by destination, between 4-15 business days, but we always send out our packages within 48 hours of receiving your order.
Cost varies by destination between €9-25.
Free Delivery on orders above €60.
*The delivery days count from the moment the carrier has received our package.
We currently do not ship outside of the European Union, however if you would like to place a order, contact us at hello@persona-path.com and we will try to assist you.
Transparency & Sourcing
At PersonaPath, we believe in full transparency and doing things the right way—from how we formulate our supplements to how we treat the planet.
Our mission is to help people live healthier, more balanced lives, while respecting the world we all share.
Our products are manufactured in the UK, Germany, Slovenia and Latvia under strict quality standards and then packaged and prepared locally in Denmark, where we work closely with Fødevarestyrelsen (Danish Veterinary and Food Administration) to ensure everything meets national safety and labelling requirements.
We work exclusively with a BRC AA–certified manufacturer that follows Good Manufacturing Practices (GMP) and full traceability, from raw ingredients to finished product. All of our formulations are developed by a qualified nutritionist and are based strictly on EFSA-approved claims—with no inflated promises, ever.
We're also proud to take an ethical and sustainable approach. We never work with suppliers who test on animals or use harmful harvesting methods.
Sustainability is not a side project—it’s core to how we operate.
✔ All of our packaging is made from biodegradable materials, durable glass or recycled plastic
✔ We offset our shipping-related CO₂ emissions
✔ We’re partnered with Greenspark, supporting projects like:
– Reforestation
– Ocean plastic cleanup
– Carbon removal & kelp planting
– Fresh water access in vulnerable areas
– Supporting honeybee populations
We are proud to offer clean, honest supplements—made with care, backed by science, and delivered with respect for your health and the planet.
Our products are manufactured in the UK, Germany, Slovenia, and Latvia under strict quality standards, then packaged and prepared locally in Denmark.
We’ve also built a transparent ingredient section on our website, where you can explore every detail of what goes into our products — including the exact type of raw material, EFSA-approved health claims, ingredient origin, and documented benefits.
Supporting ingredients are also fully listed and explained — what they are, what they do, and why we include them. You can find this information under Ingredients → Supporting Ingredients, or directly on each product page by clicking on “Ingredients.”
Finally, our packaging materials are sourced from Germany, Poland, the UK, and Denmark, all produced to meet the highest European standards of safety and sustainability.
Giving Back Together
We’ve partnered with Greenspark to give back where it’s needed most — supporting meaningful environmental and social causes around the world. Each month, we dedicate a portion of our monthly revenue to a new project that creates real impact, from restoring forests and protecting marine ecosystems to supporting local communities.
You can always see the current month’s cause featured at the top of our website or on our social media channels. At the end of each month, we share full transparency — including donation receipts, details about the partner organization, and photos from the project locations — so you can see exactly where your support goes.
We’re proud that our community plays an active role in helping us make a difference. Every purchase contributes to something bigger — together, we’re building a healthier planet and a better future.
The Persona
Promise
Discover what makes us different and why our customers trust us.
At Persona we don't use marketing claims.
Every health benefit you see is approved by european authorities and backed by science.
It's how we build trust.
Folic acid / Folate
- Folate contributes to the normal function of the immune system.
Vitamin B12
- Vitamin B12 contributes to the normal function of the immune system.
- Vitamin B12 contributes to normal energy‑yielding metabolism.
- Vitamin B12 contributes to the reduction of tiredness and fatigue.
Niacin (Vitamin B3)
- Niacin contributes to normal energy‑yielding metabolism.
- Niacin contributes to the reduction of tiredness and fatigue.
Pantothenic acid (Vitamin B5)
- Pantothenic acid contributes to normal energy‑yielding metabolism.
- Pantothenic acid contributes to the reduction of tiredness and fatigue.
Vitamin B6
- Vitamin B6 contributes to normal energy‑yielding metabolism.
- Vitamin B6 contributes to the reduction of tiredness and fatigue.
Riboflavin (Vitamin B2)
- Riboflavin contributes to normal energy‑yielding metabolism.
- Riboflavin contributes to the reduction of tiredness and fatigue.
Thiamin (Vitamin B1)
- Thiamine contributes to normal energy‑yielding metabolism.
Biotin
- Biotin contributes to normal energy‑yielding metabolism.
Niacin (vitamin B3)
- Niacin contributes to normal psychological function.*
- Niacin contributes to normal functioning of the nervous system.*
Vitamin B6 (pyridoxine)
- Vitamin B6 contributes to normal psychological function.*
- Vitamin B6 contributes to normal functioning of the nervous system.*
Riboflavin (vitamin B2)
- Riboflavin contributes to normal functioning of the nervous system.*
Thiamine (vitamin B1)
- Thiamine contributes to normal psychological function.*
- Thiamine contributes to normal functioning of the nervous system.*
Folic acid
- Folate contributes to normal psychological function.*
Biotin
- Biotin contributes to normal functioning of the nervous system.*
Vitamin B12 (cobalamin)
- Vitamin B12 contributes to normal psychological function.*
- Vitamin B12 contributes to normal functioning of the nervous system.*
- Niacin contributes to the maintenance of normal skin.
- Riboflavin contributes to the maintenance of normal skin.
- Biotin contributes to the maintenance of normal skin.
- Niacin, riboflavin and biotin contribute to the maintenance of normal skin.
- Biotin contributes to the maintenance of normal hair.
- Riboflavin contributes to the maintenance of normal mucous membranes.
- Biotin contributes to the maintenance of normal mucous membranes.
Understanding Bioavailability
Why the form of a vitamin matters as much as the vitamin itself
The Restaurant Example
Imagine ordering salmon at a restaurant. The menu says "salmon", but what arrives could be perfectly grilled, raw, or still wrapped in plastic. Technically all salmon, but only one is actually nourishing.
Vitamins work the same way. A label might say "Vitamin C 1000 mg," but that vitamin could be in a form your body barely absorbs, or one it uses efficiently. The form determines whether your body can actually use what you're taking.
What Is Bioavailability?
Bioavailability is the amount of a nutrient that actually enters your bloodstream and reaches your cells.
If you take 100 mg of a vitamin but only 20 mg gets absorbed, the bioavailability is 20%. The rest passes through unused.
What affects bioavailability:
- The chemical form of the vitamin
- Your individual gut health and genetics
- What you eat alongside the supplement
Common Vitamin Forms Explained
Methylated Vitamins (Active Forms)
Some people struggle to convert standard vitamins into their active, usable forms due to genetic variations. Methylated vitamins skip that step; they're already active.
Example: Methylcobalamin (B12) vs Cyanocobalamin
- Methylcobalamin Active form, immediately usable
- Cyanocobalamin Synthetic, requires conversion (which 40-60% of people struggle with due to MTHFR gene variants)
Common forms: Methylfolate (5-MTHF), methylcobalamin (B12), P-5-P (B6)
Natural vs Synthetic
"Natural" doesn't automatically mean better; it depends on the specific vitamin.
Example: Vitamin E
- Natural (d-alpha-tocopherol): Derived from plants, more biologically active
- Synthetic (dl-alpha-tocopherol): Contains 8 forms, only one your body prefers
Example: Vitamin C
- Ascorbic acid (synthetic) is molecularly identical to natural vitamin C and equally effective
- Liposomal vitamin C: Wrapped in fat bubbles for enhanced absorption and higher blood levels
Fat-Soluble vs Water-Soluble
Fat-soluble vitamins (A, D, E, K) need fat to be absorbed. Taking them with food containing healthy fats significantly improves uptake.
Water-soluble vitamins (B, C) dissolve in water and are absorbed more easily, but excess is excreted quickly, making sustained-release forms sometimes beneficial.
What "Bioavailable" Actually Means on a Label
When we say "bioavailable form," we mean:
- Active forms that don't require conversion (methylated B vitamins)
- Forms with proven absorption backed by scientific research
- Enhanced delivery systems (like liposomal technology)
What it shouldn't mean: vague marketing language without specifics.
Red flags to watch for:
- No specific form listed (just "Vitamin B12" without the type)
- "Proprietary blends" that hide ingredient amounts
- Claims without any absorption data
The Bottom Line
A cheaper supplement with poor bioavailability isn't a bargain. The best supplements aren't about taking more; they're about absorbing what you take.
What to look for:
- Specific forms clearly listed on the label
- Science-backed forms (methylated, chelated, liposomal)
- Transparency about dosages and sources
At Persona, we choose forms based on scientific evidence for absorption, not what's cheapest to manufacture. Because if your body can't use it, what's the point?
References: EFSA scientific opinions on bioavailability; NIH Office of Dietary Supplements; peer-reviewed studies on vitamin absorption and forms (available upon request).
More than just Supplements
Bioavailable Nutrients
How to Use:
- Take 1 capsule per day with food and water, at least 4 hours before bedtime.
The Benefits of Thiamine
Bioavailable Form
Thiamine (Vitamin B1) is an essential water-soluble vitamin that plays a fundamental role in energy metabolism and nervous system function. It is the first B vitamin that was discovered, and it helps convert carbohydrates into energy, making it essential for every cell in the body, particularly the brain and heart.
Key Highlights
- Contributes to normal energy-yielding metabolism (EFSA approved)
- Supports normal heart function (EFSA approved)
- Contributes to normal functioning of the nervous system (EFSA approved)
- Supports normal psychological function (EFSA approved)
- First B vitamin discovered; essential for carbohydrate metabolism
- Brain and heart are particularly dependent on thiamine
Biochemistry Timeline
Thiamine is water-soluble with limited body storage. Blood levels respond to supplementation within 1 to 2 weeks. Because it is not stored efficiently, consistent daily intake is important. Thiamine is well-tolerated with no established upper limit, as excess is readily excreted.
Cognitive Function
Thiamine supports cognitive function through its essential role in brain energy metabolism. The brain's heavy reliance on glucose means that even mild thiamine insufficiency can affect mental clarity, concentration, and memory. Ensuring adequate thiamine supports sharp, clear thinking.
Digestive Health
Thiamine supports the production of hydrochloric acid in the stomach, which is necessary for proper digestion and nutrient absorption. It also supports the muscle tone of the digestive tract, helping maintain healthy bowel function.
Summary
Thiamine (Vitamin B1) is essential for energy metabolism, heart function, and nervous system health. As the body cannot store thiamine efficiently, regular daily intake supports consistent energy production and cognitive function. EFSA recognises its contributions to energy metabolism, heart function, nervous system function, and psychological function.
FAQs
How much thiamine do I need?
The recommended daily intake for adults is 1.1 mg. There is no established upper limit as excess thiamine is excreted in urine. Supplemental doses of 1-100 mg are commonly used.
Are there any side effects?
Thiamine is considered very safe. Excess is efficiently excreted in urine. Side effects are extremely rare even at high doses.
Is thiamine safe during pregnancy?
Yes, thiamine is essential during pregnancy for maternal and fetal energy metabolism. Recommended intake is slightly higher during pregnancy.
Research
Wang H, Wang Y, Li C et al. (2026). Association of thiamine supplementation with 30-day mortality among ICU patients with sepsis-associated delirium. Sci Rep. https://pubmed.ncbi.nlm.nih.gov/41872438/
Sumboonnanonda R, Vijarnsorn C, Saengpanit P et al. (2026). Impact of thiamin supplementation on thiamin pyrophosphate effect and cardiac function in pediatric heart disease patients on diuretics: a randomized controlled trial. Sci Rep. https://pubmed.ncbi.nlm.nih.gov/41872295/
Yin M, Jing X, He Q et al. (2026). Thiamine supplementation is associated with lower in-hospital and ICU mortality in patients with acute respiratory failure: a retrospective cohort study based on the MIMIC-IV database. BMC Pulm Med. https://pubmed.ncbi.nlm.nih.gov/41862834/
Liang W, Chen Y, Zeng Y et al. (2026). A hemodialysis patient with recurrent Wernicke encephalopathy showed reversible lentiform fork sign: A case report. Medicine (Baltimore). https://pubmed.ncbi.nlm.nih.gov/41861210/
Rahaman A, Blanckart L, Hanelt D et al. (2026). Unraveling filamentous algae as a renewable bioresource for advanced moisture-absorbent innovative aquatic fibers. Bioresour Bioprocess. https://pubmed.ncbi.nlm.nih.gov/41843345/
Hrouch W, Naji Y, Hamza L et al. (2026). Duodenal Lymphocytosis and B1 Deficiency: Unveiling the Overlap Between Gut and Brain. Cureus. https://pubmed.ncbi.nlm.nih.gov/41798567/
Fu AS, Osman F, Cameron-Smith D et al. (2026). Micronutrient intake and status of adults consuming plant-based meat analogues or animal-based meats as primary protein source: An 8-week randomized controlled trial. Clin Nutr. https://pubmed.ncbi.nlm.nih.gov/41785660/
Michiwaki Y, Nishimiya J, Kumagawa T et al. (2026). Marchiafava-Bignami disease mimicking acute corpus callosum infarction associated with chronic shochu consumption. Surg Neurol Int. https://pubmed.ncbi.nlm.nih.gov/41783222/
Ma Y, Zhang J, Chen C et al. (2026). Thiamine ameliorates subacute ruminal acidosis-induced mastitis in goats and is associated with modulation of the NF-κB/NLRP3/CLOCK axis and rumen microbial homeostasis. J Dairy Sci. https://pubmed.ncbi.nlm.nih.gov/41780867/
Miteva MT, Laurenti D, Mattioli R et al. (2026). Vitamin deficiencies and Alzheimer's disease: evidence and implications for supplementation. Front Nutr [Review]. https://pubmed.ncbi.nlm.nih.gov/41769656/
Vine J, Lee JH, Simpson MD et al. (2026). Baseline measurements of cellular respiration affect the response to thiamine treatment in post-arrest patients. Resuscitation. https://pubmed.ncbi.nlm.nih.gov/41759812/
Xue F, Zhang F, Zhuang Q et al. (2026). Metagenomic Insights into the Modulatory Effects of Thiamine Supplementation for Treating Subclinical Ketosis Dairy Cows. Animals (Basel). https://pubmed.ncbi.nlm.nih.gov/41751141/
Neupane A, Shahi A, Adhikari B (2026). Wernicke-Korsakoff Syndrome a Rare Complication of Hyperemesis Gravidarum: Case Report. Clin Case Rep. https://pubmed.ncbi.nlm.nih.gov/41727741/
Ilyasova A, Eusebio R, Raff L et al. (2026). Wernicke Encephalopathy Associated with Malabsorption in Degos Disease. J Investig Med High Impact Case Rep. https://pubmed.ncbi.nlm.nih.gov/41717716/
Anderson YT, Priest K, Zastre J (2026). Vitamin B1 protects against Aβ(1-42)-induced HIF-1α activation and neurotoxicity. Neurochem Int. https://pubmed.ncbi.nlm.nih.gov/41707701/
Rosewarne RE, Farina N (2026). Thiamine Use in Hospitalized Patients: A Clinical Review. J Nutr Metab [Review]. https://pubmed.ncbi.nlm.nih.gov/41684754/
Işık T, Garipağaoğlu M (2026). Assessment of the nutritional status of Syrian refugee women in the lactation period. Nutr Health. https://pubmed.ncbi.nlm.nih.gov/41662259/
Freddy M, Larsen TB, Patel S (2026). See One, B1, Treat One: Identifying and Managing Thiamine Deficiency in a Patient With Altered Mental Status. Cureus. https://pubmed.ncbi.nlm.nih.gov/41640937/
Alanazi MA (2026). Intravenous Thiamine-Induced Thrombocytopenia in a Patient With Chronic Adrenal Insufficiency. J Med Cases. https://pubmed.ncbi.nlm.nih.gov/41631281/
Goyer A, Phillips R, Seidel A et al. (2026). Thiamin addition to soil increases potato tuber thiamin content under greenhouse conditions. PeerJ. https://pubmed.ncbi.nlm.nih.gov/41630844/
20 studies — Thiamine
Wang H, Wang Y, Li C et al. (2026). Association of thiamine supplementation with 30-day mortality among ICU patients with sepsis-associated delirium. Sci Rep. https://pubmed.ncbi.nlm.nih.gov/41872438/
Sumboonnanonda R, Vijarnsorn C, Saengpanit P et al. (2026). Impact of thiamin supplementation on thiamin pyrophosphate effect and cardiac function in pediatric heart disease patients on diuretics: a randomized controlled trial. Sci Rep. https://pubmed.ncbi.nlm.nih.gov/41872295/
Yin M, Jing X, He Q et al. (2026). Thiamine supplementation is associated with lower in-hospital and ICU mortality in patients with acute respiratory failure: a retrospective cohort study based on the MIMIC-IV database. BMC Pulm Med. https://pubmed.ncbi.nlm.nih.gov/41862834/
Liang W, Chen Y, Zeng Y et al. (2026). A hemodialysis patient with recurrent Wernicke encephalopathy showed reversible lentiform fork sign: A case report. Medicine (Baltimore). https://pubmed.ncbi.nlm.nih.gov/41861210/
Rahaman A, Blanckart L, Hanelt D et al. (2026). Unraveling filamentous algae as a renewable bioresource for advanced moisture-absorbent innovative aquatic fibers. Bioresour Bioprocess. https://pubmed.ncbi.nlm.nih.gov/41843345/
Hrouch W, Naji Y, Hamza L et al. (2026). Duodenal Lymphocytosis and B1 Deficiency: Unveiling the Overlap Between Gut and Brain. Cureus. https://pubmed.ncbi.nlm.nih.gov/41798567/
Fu AS, Osman F, Cameron-Smith D et al. (2026). Micronutrient intake and status of adults consuming plant-based meat analogues or animal-based meats as primary protein source: An 8-week randomized controlled trial. Clin Nutr. https://pubmed.ncbi.nlm.nih.gov/41785660/
Michiwaki Y, Nishimiya J, Kumagawa T et al. (2026). Marchiafava-Bignami disease mimicking acute corpus callosum infarction associated with chronic shochu consumption. Surg Neurol Int. https://pubmed.ncbi.nlm.nih.gov/41783222/
Ma Y, Zhang J, Chen C et al. (2026). Thiamine ameliorates subacute ruminal acidosis-induced mastitis in goats and is associated with modulation of the NF-κB/NLRP3/CLOCK axis and rumen microbial homeostasis. J Dairy Sci. https://pubmed.ncbi.nlm.nih.gov/41780867/
Miteva MT, Laurenti D, Mattioli R et al. (2026). Vitamin deficiencies and Alzheimer's disease: evidence and implications for supplementation. Front Nutr [Review]. https://pubmed.ncbi.nlm.nih.gov/41769656/
Vine J, Lee JH, Simpson MD et al. (2026). Baseline measurements of cellular respiration affect the response to thiamine treatment in post-arrest patients. Resuscitation. https://pubmed.ncbi.nlm.nih.gov/41759812/
Xue F, Zhang F, Zhuang Q et al. (2026). Metagenomic Insights into the Modulatory Effects of Thiamine Supplementation for Treating Subclinical Ketosis Dairy Cows. Animals (Basel). https://pubmed.ncbi.nlm.nih.gov/41751141/
Neupane A, Shahi A, Adhikari B (2026). Wernicke-Korsakoff Syndrome a Rare Complication of Hyperemesis Gravidarum: Case Report. Clin Case Rep. https://pubmed.ncbi.nlm.nih.gov/41727741/
Ilyasova A, Eusebio R, Raff L et al. (2026). Wernicke Encephalopathy Associated with Malabsorption in Degos Disease. J Investig Med High Impact Case Rep. https://pubmed.ncbi.nlm.nih.gov/41717716/
Anderson YT, Priest K, Zastre J (2026). Vitamin B1 protects against Aβ(1-42)-induced HIF-1α activation and neurotoxicity. Neurochem Int. https://pubmed.ncbi.nlm.nih.gov/41707701/
Rosewarne RE, Farina N (2026). Thiamine Use in Hospitalized Patients: A Clinical Review. J Nutr Metab [Review]. https://pubmed.ncbi.nlm.nih.gov/41684754/
Işık T, Garipağaoğlu M (2026). Assessment of the nutritional status of Syrian refugee women in the lactation period. Nutr Health. https://pubmed.ncbi.nlm.nih.gov/41662259/
Freddy M, Larsen TB, Patel S (2026). See One, B1, Treat One: Identifying and Managing Thiamine Deficiency in a Patient With Altered Mental Status. Cureus. https://pubmed.ncbi.nlm.nih.gov/41640937/
Alanazi MA (2026). Intravenous Thiamine-Induced Thrombocytopenia in a Patient With Chronic Adrenal Insufficiency. J Med Cases. https://pubmed.ncbi.nlm.nih.gov/41631281/
Goyer A, Phillips R, Seidel A et al. (2026). Thiamin addition to soil increases potato tuber thiamin content under greenhouse conditions. PeerJ. https://pubmed.ncbi.nlm.nih.gov/41630844/
The Benefits of Vitamin B2
Bioavailable Form
Riboflavin (Vitamin B2) is an essential water-soluble vitamin that plays a key role in energy production, cellular function, and the metabolism of fats, drugs, and steroids. It acts as a precursor to the coenzymes FAD and FMN, which are involved in numerous metabolic reactions including the electron transport chain that generates cellular energy.
Key Highlights
- Contributes to normal energy-yielding metabolism (EFSA approved)
- Supports the reduction of tiredness and fatigue (EFSA approved)
- Contributes to maintenance of normal skin and mucous membranes (EFSA approved)
- Supports maintenance of normal vision (EFSA approved)
- Contributes to protection of cells from oxidative stress (EFSA approved)
- Supports normal functioning of the nervous system (EFSA approved)
- Contributes to normal iron metabolism (EFSA approved)
Biochemistry Timeline
Riboflavin is water-soluble and rapidly absorbed. Blood levels respond within days of supplementation. The bright yellow urine some people notice when taking B vitamins is due to riboflavin and is completely harmless.
Iron Metabolism
Riboflavin contributes to normal iron metabolism, supporting the body's ability to absorb, transport, and utilise iron. This makes it a supportive nutrient alongside iron supplementation, particularly for women at risk of iron deficiency.
Nervous System
Riboflavin contributes to normal functioning of the nervous system. Its role in energy production is particularly important for nerve cells, which have high metabolic demands. Some research has also explored riboflavin's potential role in migraine prevention at higher doses (400 mg/day), though this is beyond standard nutritional supplementation.
Summary
Riboflavin (Vitamin B2) is essential for energy production, skin health, vision, antioxidant protection, and iron metabolism. It is well-absorbed, safe, and the bright yellow urine sometimes caused by B-complex supplements is due to riboflavin and is completely harmless.
FAQs
Why does my urine turn yellow when taking B vitamins?
The bright yellow colour is caused by riboflavin (B2) and is completely normal and harmless. It simply indicates that your body is absorbing the vitamin and excreting the excess.
How much riboflavin do I need?
The recommended daily intake for adults is 1.1-1.4 mg. There is no established upper limit as excess is excreted in urine.
Is riboflavin safe during pregnancy?
Yes, riboflavin is important during pregnancy. Recommended intake is slightly higher during pregnancy and breastfeeding.
Research
Dai L, Wang B, Fan W et al. (2026). Oligomeric ultranano hydrogen water improves flock uniformity, antioxidant capacity and intestinal health in growth phase layer-type chickens. Poult Sci. https://pubmed.ncbi.nlm.nih.gov/41846073/
Tia A, Hauser J, Konan AG et al. (2026). Systematic Review of Nutrients' Impact on Cognition and School Performance in School-Aged Children in Sub-Saharan Africa. Nutr Rev. https://pubmed.ncbi.nlm.nih.gov/41824300/
Beckman KA, Parkhurst GD, Lee JH et al. (2026). Randomized, Controlled Study to Evaluate the Safety and Efficacy of Oxygen-Enriched Epithelium-On Corneal Cross-Linking for the Treatment of Keratoconus. Ophthalmol Ther. https://pubmed.ncbi.nlm.nih.gov/41824263/
Ambrósio JA, Brissos J, Tardão GC et al. (2026). Tomographic and Biomechanical Stability of the Non-operated Eye in Asymmetric Keratoconus with Unilateral Intracorneal Ring Segment Implantation. Ophthalmol Ther. https://pubmed.ncbi.nlm.nih.gov/41811402/
Rapuano CJ, Beckman KA, Rajpal R (2026). The Critical Role of Oxygen Supplementation in Epithelium-On Corneal Cross-Linking: A Narrative Review. Adv Ther [Review]. https://pubmed.ncbi.nlm.nih.gov/41774369/
Quiles-Pérez CJ, Olzak A, Fofana A et al. (2026). Anaerobic riboflavin degradation by human gut Lachnospiraceae. bioRxiv. https://pubmed.ncbi.nlm.nih.gov/41757019/
Ben Hilal H, Zhang J, Liu X et al. (2026). In Vivo Evaluation of Efficacy and Safety of Oxygen-Supplemented Accelerated Scleral Cross-Linking Over Time in Young Rabbits. Transl Vis Sci Technol. https://pubmed.ncbi.nlm.nih.gov/41733420/
Chen Z, Lai L, Lu X et al. (2026). Case Report: SLC52A2 variants cause Brown-Vialetto-Van Laere syndrome type 2, characterized by pure red cell aplastic anemia: clinical and genetic features of three Chinese children. Front Pediatr. https://pubmed.ncbi.nlm.nih.gov/41727768/
Lim RR, Zhao E, Hass DT et al. (2026). Nutrient microenvironments reprogram RPE metabolism. bioRxiv. https://pubmed.ncbi.nlm.nih.gov/41727089/
Shabbir U, McNulty H, Hughes C et al. (2026). B vitamins, immune function and the ageing brain: a critical review of the evidence, mechanisms and potential role of the gut microbiome. Proc Nutr Soc [Review]. https://pubmed.ncbi.nlm.nih.gov/41693429/
Bjørke-Monsen AL, Torsvik IK, Bentsen MHL et al. (2026). Exclusive Breastfeeding Is Not Ensuring an Adequate Vitamin B Status in Premature Infants with Very Low Birth Weight. Nutrients. https://pubmed.ncbi.nlm.nih.gov/41683246/
Işık T, Garipağaoğlu M (2026). Assessment of the nutritional status of Syrian refugee women in the lactation period. Nutr Health. https://pubmed.ncbi.nlm.nih.gov/41662259/
Zhao Z, Shi S, Zhang L et al. (2026). Metabolic modulation of yogurt fermentation kinetics and acidification by Bifidobacterium-starter culture interactions. Front Microbiol. https://pubmed.ncbi.nlm.nih.gov/41657908/
Nordin BA (2026). Comparative Efficacy and Safety of Conventional Dresden, Transepithelial, and Accelerated Corneal Collagen Cross-Linking Protocols for Progressive Keratoconus: A Systematic Review. Cureus [Review]. https://pubmed.ncbi.nlm.nih.gov/41641181/
Jaruseviciene R, Tamuleviciute R, Galgauskas S (2026). Corneal Cross-Linking in Keratoconus: Comparative Analysis of Standard, Accelerated and Transepithelial Protocols. J Clin Med [Review]. https://pubmed.ncbi.nlm.nih.gov/41598429/
Tong T, Huang X, Li L et al. (2026). Microbial metabolite FAD mobilizes adipocyte lipid remodeling to enhance cancer immunotherapy efficacy. Cell Metab. https://pubmed.ncbi.nlm.nih.gov/41570815/
Duffy B, Patted A, Boelig RC et al. (2025). Can riboflavin offer a novel personalised strategy for maintaining healthy blood pressure in pregnancy in populations globally?. BMJ Nutr Prev Health [Review]. https://pubmed.ncbi.nlm.nih.gov/41768514/
Rocchetti G, Catellani A, Lapris M et al. (2025). Plasma Metabolomics Reveals Systemic Metabolic Remodeling in Early-Lactation Dairy Cows Fed a Fusarium-Contaminated Diet and Supplemented with a Mycotoxin-Deactivating Product. Toxins (Basel). https://pubmed.ncbi.nlm.nih.gov/41591156/
Feely J, Saliba N, Nze N et al. (2025). Progressive Weakness in Adulthood: Lipid Storage Myopathy With Suspected Sertraline-Associated Etiology. Cureus. https://pubmed.ncbi.nlm.nih.gov/41555972/
Wang Q, Zhang N, Sun L et al. (2025). Riboflavin Increases Goat Sperm Motility via Enhancement of Mitochondrial β-Oxidation. Biology (Basel). https://pubmed.ncbi.nlm.nih.gov/41514925/
20 studies — Vitamin B2
Dai L, Wang B, Fan W et al. (2026). Oligomeric ultranano hydrogen water improves flock uniformity, antioxidant capacity and intestinal health in growth phase layer-type chickens. Poult Sci. https://pubmed.ncbi.nlm.nih.gov/41846073/
Tia A, Hauser J, Konan AG et al. (2026). Systematic Review of Nutrients' Impact on Cognition and School Performance in School-Aged Children in Sub-Saharan Africa. Nutr Rev. https://pubmed.ncbi.nlm.nih.gov/41824300/
Beckman KA, Parkhurst GD, Lee JH et al. (2026). Randomized, Controlled Study to Evaluate the Safety and Efficacy of Oxygen-Enriched Epithelium-On Corneal Cross-Linking for the Treatment of Keratoconus. Ophthalmol Ther. https://pubmed.ncbi.nlm.nih.gov/41824263/
Ambrósio JA, Brissos J, Tardão GC et al. (2026). Tomographic and Biomechanical Stability of the Non-operated Eye in Asymmetric Keratoconus with Unilateral Intracorneal Ring Segment Implantation. Ophthalmol Ther. https://pubmed.ncbi.nlm.nih.gov/41811402/
Rapuano CJ, Beckman KA, Rajpal R (2026). The Critical Role of Oxygen Supplementation in Epithelium-On Corneal Cross-Linking: A Narrative Review. Adv Ther [Review]. https://pubmed.ncbi.nlm.nih.gov/41774369/
Quiles-Pérez CJ, Olzak A, Fofana A et al. (2026). Anaerobic riboflavin degradation by human gut Lachnospiraceae. bioRxiv. https://pubmed.ncbi.nlm.nih.gov/41757019/
Ben Hilal H, Zhang J, Liu X et al. (2026). In Vivo Evaluation of Efficacy and Safety of Oxygen-Supplemented Accelerated Scleral Cross-Linking Over Time in Young Rabbits. Transl Vis Sci Technol. https://pubmed.ncbi.nlm.nih.gov/41733420/
Chen Z, Lai L, Lu X et al. (2026). Case Report: SLC52A2 variants cause Brown-Vialetto-Van Laere syndrome type 2, characterized by pure red cell aplastic anemia: clinical and genetic features of three Chinese children. Front Pediatr. https://pubmed.ncbi.nlm.nih.gov/41727768/
Lim RR, Zhao E, Hass DT et al. (2026). Nutrient microenvironments reprogram RPE metabolism. bioRxiv. https://pubmed.ncbi.nlm.nih.gov/41727089/
Shabbir U, McNulty H, Hughes C et al. (2026). B vitamins, immune function and the ageing brain: a critical review of the evidence, mechanisms and potential role of the gut microbiome. Proc Nutr Soc [Review]. https://pubmed.ncbi.nlm.nih.gov/41693429/
Bjørke-Monsen AL, Torsvik IK, Bentsen MHL et al. (2026). Exclusive Breastfeeding Is Not Ensuring an Adequate Vitamin B Status in Premature Infants with Very Low Birth Weight. Nutrients. https://pubmed.ncbi.nlm.nih.gov/41683246/
Işık T, Garipağaoğlu M (2026). Assessment of the nutritional status of Syrian refugee women in the lactation period. Nutr Health. https://pubmed.ncbi.nlm.nih.gov/41662259/
Zhao Z, Shi S, Zhang L et al. (2026). Metabolic modulation of yogurt fermentation kinetics and acidification by Bifidobacterium-starter culture interactions. Front Microbiol. https://pubmed.ncbi.nlm.nih.gov/41657908/
Nordin BA (2026). Comparative Efficacy and Safety of Conventional Dresden, Transepithelial, and Accelerated Corneal Collagen Cross-Linking Protocols for Progressive Keratoconus: A Systematic Review. Cureus [Review]. https://pubmed.ncbi.nlm.nih.gov/41641181/
Jaruseviciene R, Tamuleviciute R, Galgauskas S (2026). Corneal Cross-Linking in Keratoconus: Comparative Analysis of Standard, Accelerated and Transepithelial Protocols. J Clin Med [Review]. https://pubmed.ncbi.nlm.nih.gov/41598429/
Tong T, Huang X, Li L et al. (2026). Microbial metabolite FAD mobilizes adipocyte lipid remodeling to enhance cancer immunotherapy efficacy. Cell Metab. https://pubmed.ncbi.nlm.nih.gov/41570815/
Duffy B, Patted A, Boelig RC et al. (2025). Can riboflavin offer a novel personalised strategy for maintaining healthy blood pressure in pregnancy in populations globally?. BMJ Nutr Prev Health [Review]. https://pubmed.ncbi.nlm.nih.gov/41768514/
Rocchetti G, Catellani A, Lapris M et al. (2025). Plasma Metabolomics Reveals Systemic Metabolic Remodeling in Early-Lactation Dairy Cows Fed a Fusarium-Contaminated Diet and Supplemented with a Mycotoxin-Deactivating Product. Toxins (Basel). https://pubmed.ncbi.nlm.nih.gov/41591156/
Feely J, Saliba N, Nze N et al. (2025). Progressive Weakness in Adulthood: Lipid Storage Myopathy With Suspected Sertraline-Associated Etiology. Cureus. https://pubmed.ncbi.nlm.nih.gov/41555972/
Wang Q, Zhang N, Sun L et al. (2025). Riboflavin Increases Goat Sperm Motility via Enhancement of Mitochondrial β-Oxidation. Biology (Basel). https://pubmed.ncbi.nlm.nih.gov/41514925/
The Benefits of Niacin
Stable form
Niacin (Vitamin B3) is an essential water-soluble vitamin that plays a central role in energy metabolism. It is a precursor to NAD and NADP, two coenzymes involved in over 400 enzymatic reactions in the body. Niacin supports energy production, DNA repair, skin health, and nervous system function.
Key Highlights
- Contributes to normal energy-yielding metabolism (EFSA approved)
- Supports the reduction of tiredness and fatigue (EFSA approved)
- Contributes to maintenance of normal skin and mucous membranes (EFSA approved)
- Supports normal psychological function (EFSA approved)
- Contributes to normal functioning of the nervous system (EFSA approved)
- NAD/NADP coenzymes involved in over 400 enzymatic reactions
Biochemistry Timeline
Niacin is water-soluble and quickly absorbed. Blood levels respond within days. Note: nicotinic acid (one form of niacin) can cause a harmless "flush" (warmth, redness of skin) at higher doses. Nicotinamide does not cause this effect.
DNA Repair and Cellular Health
NAD plays a role in DNA repair through enzymes called PARPs (poly ADP-ribose polymerases) and sirtuins. These pathways are increasingly recognised as important for cellular maintenance and longevity. Adequate niacin intake supports the body's ability to repair DNA damage from normal metabolic processes and environmental exposures.
Cardiovascular Support
High-dose nicotinic acid has been used clinically to support healthy cholesterol levels. However, this is a pharmaceutical application at doses well above nutritional supplementation and should only be used under medical supervision. At nutritional doses, niacin supports overall cardiovascular health through its role in energy metabolism and cellular function.
Summary
Niacin (Vitamin B3) is a versatile vitamin whose coenzyme forms (NAD, NADP) are involved in over 400 reactions. It supports energy metabolism, skin health, nervous system function, and DNA repair. EFSA recognises multiple health claims including contributions to energy metabolism, tiredness reduction, skin maintenance, and psychological function.
FAQs
What is the "niacin flush"?
Nicotinic acid can cause a harmless temporary warmth and redness of the skin. This is called the niacin flush and is not dangerous. Nicotinamide (niacinamide) does not cause this effect.
How much niacin do I need?
The recommended daily intake for adults is 13-16 mg NE (niacin equivalents). The European upper limit for nicotinic acid is 10 mg/day; for nicotinamide it is 900 mg/day.
Is niacin safe during pregnancy?
Yes, niacin is essential during pregnancy. Recommended intake is slightly higher during pregnancy.
Research
Højfeldt G, Michaud J, Damgaard A et al. (2026). Nicotinamide and Pyridoxine Supplementation Enhances Muscle Stem Cell Activity and Muscle Regeneration in Humans: A Randomized Placebo-Controlled Clinical Trial of High Force Eccentric Contraction Recovery in Healthy Young Men. Adv Sci (Weinh). https://pubmed.ncbi.nlm.nih.gov/41874466/
Berven H, Svensen M, Eikeland H et al. (2026). The NAD-brain pharmacokinetic study of NAD augmentation in blood and brain using oral precursor supplementation. iScience. https://pubmed.ncbi.nlm.nih.gov/41858901/
Li Y, Bao T, Gao L et al. (2026). Aging Triggers an Intestinal Energy Crisis and HDL3 Deficiency Disrupting Gut-Liver Axis Homeostasis. Aging Cell. https://pubmed.ncbi.nlm.nih.gov/41851037/
Sayles NM, Casalena G, Zhao D et al. (2026). Pregnancy precipitates metabolic imbalance and accelerates death in an animal model of mitochondrial cardiomyopathy. Mol Metab. https://pubmed.ncbi.nlm.nih.gov/41850395/
Qian X, Xu L, Zheng Y et al. (2026). Senescence-associated metabolic alterations aggravate calcific aortic valve disease. Eur Heart J. https://pubmed.ncbi.nlm.nih.gov/41841768/
Zhang F, Zhang H, Wang P et al. (2026). The NAD salvage pathway enzyme NMNAT-C sustains dark-phase NAD+ homeostasis in cyanobacteria. Plant Physiol. https://pubmed.ncbi.nlm.nih.gov/41838801/
Bai Y, Zhou Y, Wang G et al. (2026). Niacin Mitigates Cyclophosphamide-Induced Immunosuppression by Maintaining Intestinal Homeostasis and Regulating the HCAR2/NLRP3 and PTGS2/PGE2 Signaling Pathways. Nutrients. https://pubmed.ncbi.nlm.nih.gov/41829914/
Granvillano G, Mercogliano M, Vecchietti A et al. (2026). An Umbrella Review on the Prevention of Skin Diseases: Do Specific Nutrients Play a Protective Role?. Prev Nutr Food Sci [Review]. https://pubmed.ncbi.nlm.nih.gov/41815197/
Carpenter BJ, Lecacheur M, Mangold YN et al. (2026). NAD(+) controls circadian rhythmicity during cardiac aging. Commun Biol. https://pubmed.ncbi.nlm.nih.gov/41813966/
Pei Z, Liang F, Wang X et al. (2026). NAD⁺ as a central metabolic hub Regulating the hallmarks of aging: Mechanisms and therapeutic implications. Mech Ageing Dev. https://pubmed.ncbi.nlm.nih.gov/41812700/
Huang J, Qin Q, Li X et al. (2026). Bacteroides-associated NAD⁺ depletion correlates with exacerbated radiation-induced colorectal injury and impaired mucosal proliferative capacity. Gut Microbes. https://pubmed.ncbi.nlm.nih.gov/41807298/
Zhou H, Zhao X, Li Y et al. (2026). Nicotinamide mononucleotide supplementation modulates gut microbiota and metabolites to mitigate Alzheimer's disease pathology in APP/PS1 mice. J Alzheimers Dis. https://pubmed.ncbi.nlm.nih.gov/41805251/
Zhou E, Zhao H, Yu Y et al. (2026). Combined exposure of cold and hypoxia: a driver for hypertension and the underlying role of the microbiota-gut-brain axis. J Hypertens. https://pubmed.ncbi.nlm.nih.gov/41800819/
Huang Y, Zhao E, Zhao G et al. (2026). H3K18 lactylation-mediated SPHK1-SIRT1 feedback loop accelerates pyroptosis of tubular epithelial cells in sepsis-associated acute kidney injury. Theranostics. https://pubmed.ncbi.nlm.nih.gov/41799201/
Dong M, Zhang Q, Wang Y et al. (2026). Restructuring tilth layers suppresses cotton Verticillium wilt through the niacinamide-mediated enrichment of beneficial Pseudomonas. Microbiol Res. https://pubmed.ncbi.nlm.nih.gov/41793890/
Saida M, Saeki N, Sakai H et al. (2026). β-Nicotinamide mononucleotide preserves muscle strength in septic male mice. Sci Rep. https://pubmed.ncbi.nlm.nih.gov/41792260/
Kim JH, Park SJ, Lee JA et al. (2026). PRPS1 (p.V42L) Mutation in Arts Syndrome Induces Aberrant Neural Stem Cell Development and Neuronal Senescence-Like Phenotype: Rescue by Nicotinamide Mononucleotide Supplementation. Int J Stem Cells. https://pubmed.ncbi.nlm.nih.gov/41787648/
Zhou Y, Wu X, Xu X et al. (2026). Sirt1-eIF2α axis drives pro-inflammatory macrophage activation through ER stress aggravating liver IRI in aged mice. Biochem Biophys Res Commun. https://pubmed.ncbi.nlm.nih.gov/41775225/
Zhang D, Li Z, Meng X et al. (2026). Nicotinamide Mononucleotide Decreases Secretion of Proinflammatory Cytokines via the NAD (+) /SIRT1/p65 Axis. ACS Omega. https://pubmed.ncbi.nlm.nih.gov/41768621/
Jin X, Luo X, Shen W et al. (2026). Nicotinamide Riboside Alleviates Heat Stress-Induced Intestinal Dysfunction by Enhancing Antioxidant Capacity, Restoring Immune Homeostasis, and Modulating Gut Microbiota in a Boar Model. Mol Nutr Food Res. https://pubmed.ncbi.nlm.nih.gov/41761881/
20 studies — Niacin
Højfeldt G, Michaud J, Damgaard A et al. (2026). Nicotinamide and Pyridoxine Supplementation Enhances Muscle Stem Cell Activity and Muscle Regeneration in Humans: A Randomized Placebo-Controlled Clinical Trial of High Force Eccentric Contraction Recovery in Healthy Young Men. Adv Sci (Weinh). https://pubmed.ncbi.nlm.nih.gov/41874466/
Berven H, Svensen M, Eikeland H et al. (2026). The NAD-brain pharmacokinetic study of NAD augmentation in blood and brain using oral precursor supplementation. iScience. https://pubmed.ncbi.nlm.nih.gov/41858901/
Li Y, Bao T, Gao L et al. (2026). Aging Triggers an Intestinal Energy Crisis and HDL3 Deficiency Disrupting Gut-Liver Axis Homeostasis. Aging Cell. https://pubmed.ncbi.nlm.nih.gov/41851037/
Sayles NM, Casalena G, Zhao D et al. (2026). Pregnancy precipitates metabolic imbalance and accelerates death in an animal model of mitochondrial cardiomyopathy. Mol Metab. https://pubmed.ncbi.nlm.nih.gov/41850395/
Qian X, Xu L, Zheng Y et al. (2026). Senescence-associated metabolic alterations aggravate calcific aortic valve disease. Eur Heart J. https://pubmed.ncbi.nlm.nih.gov/41841768/
Zhang F, Zhang H, Wang P et al. (2026). The NAD salvage pathway enzyme NMNAT-C sustains dark-phase NAD+ homeostasis in cyanobacteria. Plant Physiol. https://pubmed.ncbi.nlm.nih.gov/41838801/
Bai Y, Zhou Y, Wang G et al. (2026). Niacin Mitigates Cyclophosphamide-Induced Immunosuppression by Maintaining Intestinal Homeostasis and Regulating the HCAR2/NLRP3 and PTGS2/PGE2 Signaling Pathways. Nutrients. https://pubmed.ncbi.nlm.nih.gov/41829914/
Granvillano G, Mercogliano M, Vecchietti A et al. (2026). An Umbrella Review on the Prevention of Skin Diseases: Do Specific Nutrients Play a Protective Role?. Prev Nutr Food Sci [Review]. https://pubmed.ncbi.nlm.nih.gov/41815197/
Carpenter BJ, Lecacheur M, Mangold YN et al. (2026). NAD(+) controls circadian rhythmicity during cardiac aging. Commun Biol. https://pubmed.ncbi.nlm.nih.gov/41813966/
Pei Z, Liang F, Wang X et al. (2026). NAD⁺ as a central metabolic hub Regulating the hallmarks of aging: Mechanisms and therapeutic implications. Mech Ageing Dev. https://pubmed.ncbi.nlm.nih.gov/41812700/
Huang J, Qin Q, Li X et al. (2026). Bacteroides-associated NAD⁺ depletion correlates with exacerbated radiation-induced colorectal injury and impaired mucosal proliferative capacity. Gut Microbes. https://pubmed.ncbi.nlm.nih.gov/41807298/
Zhou H, Zhao X, Li Y et al. (2026). Nicotinamide mononucleotide supplementation modulates gut microbiota and metabolites to mitigate Alzheimer's disease pathology in APP/PS1 mice. J Alzheimers Dis. https://pubmed.ncbi.nlm.nih.gov/41805251/
Zhou E, Zhao H, Yu Y et al. (2026). Combined exposure of cold and hypoxia: a driver for hypertension and the underlying role of the microbiota-gut-brain axis. J Hypertens. https://pubmed.ncbi.nlm.nih.gov/41800819/
Huang Y, Zhao E, Zhao G et al. (2026). H3K18 lactylation-mediated SPHK1-SIRT1 feedback loop accelerates pyroptosis of tubular epithelial cells in sepsis-associated acute kidney injury. Theranostics. https://pubmed.ncbi.nlm.nih.gov/41799201/
Dong M, Zhang Q, Wang Y et al. (2026). Restructuring tilth layers suppresses cotton Verticillium wilt through the niacinamide-mediated enrichment of beneficial Pseudomonas. Microbiol Res. https://pubmed.ncbi.nlm.nih.gov/41793890/
Saida M, Saeki N, Sakai H et al. (2026). β-Nicotinamide mononucleotide preserves muscle strength in septic male mice. Sci Rep. https://pubmed.ncbi.nlm.nih.gov/41792260/
Kim JH, Park SJ, Lee JA et al. (2026). PRPS1 (p.V42L) Mutation in Arts Syndrome Induces Aberrant Neural Stem Cell Development and Neuronal Senescence-Like Phenotype: Rescue by Nicotinamide Mononucleotide Supplementation. Int J Stem Cells. https://pubmed.ncbi.nlm.nih.gov/41787648/
Zhou Y, Wu X, Xu X et al. (2026). Sirt1-eIF2α axis drives pro-inflammatory macrophage activation through ER stress aggravating liver IRI in aged mice. Biochem Biophys Res Commun. https://pubmed.ncbi.nlm.nih.gov/41775225/
Zhang D, Li Z, Meng X et al. (2026). Nicotinamide Mononucleotide Decreases Secretion of Proinflammatory Cytokines via the NAD (+) /SIRT1/p65 Axis. ACS Omega. https://pubmed.ncbi.nlm.nih.gov/41768621/
Jin X, Luo X, Shen W et al. (2026). Nicotinamide Riboside Alleviates Heat Stress-Induced Intestinal Dysfunction by Enhancing Antioxidant Capacity, Restoring Immune Homeostasis, and Modulating Gut Microbiota in a Boar Model. Mol Nutr Food Res. https://pubmed.ncbi.nlm.nih.gov/41761881/
The Benefits of Vitamin B5
Bioavailable Form
Pantothenic Acid (Vitamin B5) is an essential water-soluble vitamin found in virtually all foods, which is reflected in its name (from the Greek "pantos" meaning "everywhere"). It is a component of coenzyme A (CoA), one of the most important molecules in metabolism, essential for energy production, hormone synthesis, and the manufacture of fatty acids.
Key Highlights
- Contributes to normal energy-yielding metabolism (EFSA approved)
- Supports normal mental performance (EFSA approved)
- Contributes to normal synthesis of steroid hormones, vitamin D, and neurotransmitters (EFSA approved)
- Supports the reduction of tiredness and fatigue (EFSA approved)
- Component of Coenzyme A, involved in 70+ metabolic pathways
- Found in virtually all foods ("pantos" = everywhere)
Biochemistry Timeline
Pantothenic acid is water-soluble and well-absorbed. Because it is so widely available in food, isolated deficiency is very rare. Blood levels respond quickly to supplementation. There is no established European upper limit due to its excellent safety profile.
Skin and Wound Healing
Pantothenic acid (and its derivative dexpanthenol/panthenol) has been widely used in skincare and wound healing products. It supports skin cell regeneration and the formation of new tissue. While this is primarily a topical application, internal supplementation supports the body's overall capacity for tissue repair.
Stress Adaptation
Because pantothenic acid is needed for the synthesis of cortisol and other stress hormones, it supports the body's ability to respond to and recover from stress. Adequate pantothenic acid ensures that the adrenal glands, which produce stress hormones, have the raw materials they need for optimal function.
Summary
Pantothenic Acid (Vitamin B5) is an essential component of Coenzyme A, supporting energy production, hormone synthesis, mental performance, and fatigue reduction. It is found in virtually all foods and is well-tolerated with no established upper limit. EFSA recognises its contributions to energy metabolism, mental performance, steroid hormone synthesis, and tiredness reduction.
FAQs
How much pantothenic acid do I need?
The adequate intake for adults is 5 mg per day. There is no established upper limit. Supplements commonly provide 5-10 mg per day within B-complex formulations.
Is pantothenic acid the same as panthenol in skincare?
Panthenol (dexpanthenol) is a derivative of pantothenic acid used topically in skincare. When applied to skin, it converts to pantothenic acid and supports skin hydration and repair.
Is it safe during pregnancy?
Yes, pantothenic acid is considered safe during pregnancy. Adequate intake supports both maternal and fetal health.
Research
Goluch Z, Haraf G, Okruszek A et al. (2026). Impact of various types of heat treatment on the content of selected B vitamin and their profile in goose breast meat. Poult Sci. https://pubmed.ncbi.nlm.nih.gov/41850071/
Kumari G, Pal AC, Singh P et al. (2026). Continuous In Vitro Propagation of the Human Pathogen Babesia microti in Human Erythrocytes. bioRxiv. https://pubmed.ncbi.nlm.nih.gov/41847018/
González-Mercado VJ, Jean Lim S, Kumar Singh P et al. (2026). Dietary Quality and Microbiome Profiles among Rectal Cancer Patients: A Cross-Sectional Pilot Study. P R Health Sci J. https://pubmed.ncbi.nlm.nih.gov/41842880/
Bartella L, Mazzotti F, Santoro I et al. (2026). HPLC-Orbitrap-MS for the Determination of B-Vitamins in Fruit Juices and Food Supplements. J Mass Spectrom. https://pubmed.ncbi.nlm.nih.gov/41833989/
Wang H, Zhao Y, Dang D et al. (2026). Structure-function relationship of Konjac glucomannan with varying acetylation degrees in modulating gut microbiota and alleviating prediabetes. Carbohydr Polym. https://pubmed.ncbi.nlm.nih.gov/41832011/
Liu X, Jin R, Domingo R et al. (2026). The Plasmodium falciparum PPCS is a unique heteromeric complex with prokaryote-like activity and is a target of pantothenate analogs. Sci Adv. https://pubmed.ncbi.nlm.nih.gov/41824577/
Liu S, Wang M, Wang W (2026). [Analysis of urine biomarkers in urothelial carcinoma based on untargeted metabolomics]. Se Pu. https://pubmed.ncbi.nlm.nih.gov/41814906/
Zhang Y, Zhou T, Luo Z et al. (2026). Comparative Study of B Vitamins in Multiple Tissues of Oilseed Crops and Leafty Vegetables Reveal Sesame as a Valuable Resource in Vitamin B(3), B(6) and B(12). Antioxidants (Basel). https://pubmed.ncbi.nlm.nih.gov/41750605/
Detopoulou P, Yannakoulia M, Fragopoulou E et al. (2026). Validation of the food compass score through 24 h recalls and measurement of erythrocyte fatty acids in a mediterranean population. Eur J Nutr. https://pubmed.ncbi.nlm.nih.gov/41739225/
López-Sánchez M, Mendoza-Mota H, De-la-Cruz-Martínez L et al. (2026). Optimization of Indole- and Pyrazole-fused Glycyrrhetinic Acid Derivatives as Potent PTP1B Inhibitors: In Silico, In Vitro, In Vivo, and Metabolomic Studies. ACS Bio Med Chem Au. https://pubmed.ncbi.nlm.nih.gov/41726330/
Ramírez JCL, Vega-Cárdenas M, Vargas-Morales JM et al. (2026). Dietary Profile, Soluble Receptor for Advanced Glycation End Products (sRAGE) and Interleukin-6 in Individuals With Obesity and Periodontitis. Oral Dis. https://pubmed.ncbi.nlm.nih.gov/41725044/
Kheirouri S, Alizadeh M (2026). Pantothenic Acid and Parkinson Disease: A Systematic Review of Metabolomics Analysis Studies. Nutr Rev. https://pubmed.ncbi.nlm.nih.gov/41712554/
Puyana Rodríguez JM, Mata NV, Juliá Palacios N et al. (2026). Pantothenic Acid and Folate in Transport and Golgi Organization 2 (TANGO2) Deficiency: A Sibling Experience. Pediatr Neurol. https://pubmed.ncbi.nlm.nih.gov/41707637/
Ghosh SK, Bandyopadhyay D, Panja S (2026). B vitamins in dermatology. Clin Dermatol. https://pubmed.ncbi.nlm.nih.gov/41692080/
Krishnan M, Rushing BR, Howard AG et al. (2026). Integration of metabolomic and genetic data reveals novel variants underpinning the human metabolome: the Coronary Artery Risk Development in Young Adults (CARDIA) study. medRxiv. https://pubmed.ncbi.nlm.nih.gov/41646814/
Guo YY, Xue KJ, Wang L et al. (2026). Alterations in Gut Microbiota and Metabolic Profiles in Relapsed or Refractory Lymphoma. Microbiologyopen. https://pubmed.ncbi.nlm.nih.gov/41626654/
Han Y, Ou Q, Su Z et al. (2026). Competing endogenous RNAs (ceRNAs) orchestrate a gene regulatory network in the Aedes aegypti midgut in response to blood feeding. Insect Sci. https://pubmed.ncbi.nlm.nih.gov/41614448/
Li XK, Zhang N, Li HP et al. (2026). Metabolic engineering of Yarrowia lipolytica targeting bottlenecks to boost D-Pantothenic acid biosynthesis. Bioresour Bioprocess. https://pubmed.ncbi.nlm.nih.gov/41588274/
Banaszak M, Kosewski G, Górna I et al. (2025). Evaluation of Serum Antioxidant Activity in Type 2 Diabetes and Prediabetes: Links with Nutritional and Anthropometric Factors-Preliminary Studies. Curr Issues Mol Biol. https://pubmed.ncbi.nlm.nih.gov/41614781/
Yu J, Ao Y, Chen H et al. (2025). Effects of Dietary Supplementation with Dihydromyricetin on Hindgut Microbiota and Metabolite Profiles in Dairy Cows. Microorganisms. https://pubmed.ncbi.nlm.nih.gov/41597540/
20 studies — Vitamin B5
Goluch Z, Haraf G, Okruszek A et al. (2026). Impact of various types of heat treatment on the content of selected B vitamin and their profile in goose breast meat. Poult Sci. https://pubmed.ncbi.nlm.nih.gov/41850071/
Kumari G, Pal AC, Singh P et al. (2026). Continuous In Vitro Propagation of the Human Pathogen Babesia microti in Human Erythrocytes. bioRxiv. https://pubmed.ncbi.nlm.nih.gov/41847018/
González-Mercado VJ, Jean Lim S, Kumar Singh P et al. (2026). Dietary Quality and Microbiome Profiles among Rectal Cancer Patients: A Cross-Sectional Pilot Study. P R Health Sci J. https://pubmed.ncbi.nlm.nih.gov/41842880/
Bartella L, Mazzotti F, Santoro I et al. (2026). HPLC-Orbitrap-MS for the Determination of B-Vitamins in Fruit Juices and Food Supplements. J Mass Spectrom. https://pubmed.ncbi.nlm.nih.gov/41833989/
Wang H, Zhao Y, Dang D et al. (2026). Structure-function relationship of Konjac glucomannan with varying acetylation degrees in modulating gut microbiota and alleviating prediabetes. Carbohydr Polym. https://pubmed.ncbi.nlm.nih.gov/41832011/
Liu X, Jin R, Domingo R et al. (2026). The Plasmodium falciparum PPCS is a unique heteromeric complex with prokaryote-like activity and is a target of pantothenate analogs. Sci Adv. https://pubmed.ncbi.nlm.nih.gov/41824577/
Liu S, Wang M, Wang W (2026). [Analysis of urine biomarkers in urothelial carcinoma based on untargeted metabolomics]. Se Pu. https://pubmed.ncbi.nlm.nih.gov/41814906/
Zhang Y, Zhou T, Luo Z et al. (2026). Comparative Study of B Vitamins in Multiple Tissues of Oilseed Crops and Leafty Vegetables Reveal Sesame as a Valuable Resource in Vitamin B(3), B(6) and B(12). Antioxidants (Basel). https://pubmed.ncbi.nlm.nih.gov/41750605/
Detopoulou P, Yannakoulia M, Fragopoulou E et al. (2026). Validation of the food compass score through 24 h recalls and measurement of erythrocyte fatty acids in a mediterranean population. Eur J Nutr. https://pubmed.ncbi.nlm.nih.gov/41739225/
López-Sánchez M, Mendoza-Mota H, De-la-Cruz-Martínez L et al. (2026). Optimization of Indole- and Pyrazole-fused Glycyrrhetinic Acid Derivatives as Potent PTP1B Inhibitors: In Silico, In Vitro, In Vivo, and Metabolomic Studies. ACS Bio Med Chem Au. https://pubmed.ncbi.nlm.nih.gov/41726330/
Ramírez JCL, Vega-Cárdenas M, Vargas-Morales JM et al. (2026). Dietary Profile, Soluble Receptor for Advanced Glycation End Products (sRAGE) and Interleukin-6 in Individuals With Obesity and Periodontitis. Oral Dis. https://pubmed.ncbi.nlm.nih.gov/41725044/
Kheirouri S, Alizadeh M (2026). Pantothenic Acid and Parkinson Disease: A Systematic Review of Metabolomics Analysis Studies. Nutr Rev. https://pubmed.ncbi.nlm.nih.gov/41712554/
Puyana Rodríguez JM, Mata NV, Juliá Palacios N et al. (2026). Pantothenic Acid and Folate in Transport and Golgi Organization 2 (TANGO2) Deficiency: A Sibling Experience. Pediatr Neurol. https://pubmed.ncbi.nlm.nih.gov/41707637/
Ghosh SK, Bandyopadhyay D, Panja S (2026). B vitamins in dermatology. Clin Dermatol. https://pubmed.ncbi.nlm.nih.gov/41692080/
Krishnan M, Rushing BR, Howard AG et al. (2026). Integration of metabolomic and genetic data reveals novel variants underpinning the human metabolome: the Coronary Artery Risk Development in Young Adults (CARDIA) study. medRxiv. https://pubmed.ncbi.nlm.nih.gov/41646814/
Guo YY, Xue KJ, Wang L et al. (2026). Alterations in Gut Microbiota and Metabolic Profiles in Relapsed or Refractory Lymphoma. Microbiologyopen. https://pubmed.ncbi.nlm.nih.gov/41626654/
Han Y, Ou Q, Su Z et al. (2026). Competing endogenous RNAs (ceRNAs) orchestrate a gene regulatory network in the Aedes aegypti midgut in response to blood feeding. Insect Sci. https://pubmed.ncbi.nlm.nih.gov/41614448/
Li XK, Zhang N, Li HP et al. (2026). Metabolic engineering of Yarrowia lipolytica targeting bottlenecks to boost D-Pantothenic acid biosynthesis. Bioresour Bioprocess. https://pubmed.ncbi.nlm.nih.gov/41588274/
Banaszak M, Kosewski G, Górna I et al. (2025). Evaluation of Serum Antioxidant Activity in Type 2 Diabetes and Prediabetes: Links with Nutritional and Anthropometric Factors-Preliminary Studies. Curr Issues Mol Biol. https://pubmed.ncbi.nlm.nih.gov/41614781/
Yu J, Ao Y, Chen H et al. (2025). Effects of Dietary Supplementation with Dihydromyricetin on Hindgut Microbiota and Metabolite Profiles in Dairy Cows. Microorganisms. https://pubmed.ncbi.nlm.nih.gov/41597540/
The Benefits of Vitamin B6
Hormonal Balance
Vitamin B6 (Pyridoxine) is an essential water-soluble vitamin involved in over 100 enzyme reactions in the body. It is particularly important for protein metabolism, neurotransmitter production, immune function, and hormonal balance. B6 plays a central role in producing the neurotransmitters serotonin, dopamine, and GABA, making it key for mood and nervous system health.
Key Highlights
- Contributes to the regulation of hormonal activity (EFSA approved)
- Supports normal psychological function (EFSA approved)
- Contributes to normal functioning of the nervous system (EFSA approved)
- Supports normal energy-yielding metabolism (EFSA approved)
- Contributes to the reduction of tiredness and fatigue (EFSA approved)
- Supports normal function of the immune system (EFSA approved)
- Contributes to normal red blood cell formation (EFSA approved)
Biochemistry Timeline
B6 is water-soluble and blood levels respond quickly to supplementation, typically within 1 to 2 weeks. For PMS-related benefits, supplementation throughout the cycle (or at least during the luteal phase) for 2 to 3 cycles is typically recommended to assess effectiveness.
The European upper limit for supplemental B6 is 25 mg per day for long-term use, though short-term higher doses have been used in clinical studies. Very high doses over prolonged periods can cause nerve-related side effects, so moderate, consistent intake is preferred.
Protein and Amino Acid Metabolism
B6's involvement in over 100 enzyme reactions relates primarily to amino acid metabolism. It is essential for the transamination, decarboxylation, and deamination of amino acids, which are fundamental processes for protein utilisation in the body.
This makes B6 particularly important for those with higher protein intakes or increased metabolic demands. EFSA recognises that vitamin B6 contributes to normal protein and glycogen metabolism.
Homocysteine Metabolism
Together with folate and B12, vitamin B6 helps metabolise homocysteine, an amino acid that at elevated levels is associated with cardiovascular risk. B6 converts homocysteine via an alternative pathway (transsulfuration to cysteine), complementing the folate/B12 methylation pathway.
EFSA recognises that vitamin B6 contributes to normal homocysteine metabolism. Maintaining adequate B6, B12, and folate levels together provides comprehensive homocysteine management.
Summary
Vitamin B6 is a versatile water-soluble vitamin essential for neurotransmitter production, hormonal balance, immune function, and energy metabolism. It is particularly valued in women's health for its role in managing PMS symptoms and supporting mood through serotonin and dopamine production.
EFSA recognises B6's contribution to hormonal regulation, psychological function, nervous system health, energy metabolism, and immune function. Regular intake is important as the body does not store B6, and benefits for PMS typically require 2 to 3 cycles of consistent supplementation.
FAQs
How much vitamin B6 do I need?
The recommended daily intake for adults is 1.2-1.4 mg. For PMS support, research has used 50-100 mg/day. The European upper limit for long-term use is 25 mg/day. Higher therapeutic doses should be used under guidance.
Can B6 help with morning sickness?
Vitamin B6 has been studied for pregnancy-related nausea and is considered safe during pregnancy. Some healthcare providers recommend it as a first-line approach for mild morning sickness. Consult your healthcare provider for appropriate dosing.
Are there side effects from too much B6?
Very high doses (above 200 mg/day) taken for extended periods can cause peripheral neuropathy (nerve damage causing numbness and tingling). This is reversible upon stopping. Moderate supplementation within guidelines is safe.
Is B6 safe during pregnancy?
Yes, B6 is important during pregnancy. It supports fetal brain development and may help with nausea. Follow your healthcare provider's guidance on dosage.
Research
Liu X et al. – The journal of prevention of Alzheimer's disease (2026). [Review]. https://pubmed.ncbi.nlm.nih.gov/41764841/
Althubity AA – Molecular medicine reports (2026). [Review]. https://pubmed.ncbi.nlm.nih.gov/41235668/
Alvarez M et al. – Current nutrition reports (2026). [Review]. https://pubmed.ncbi.nlm.nih.gov/41609902/
Tariq L et al. – Physiologia plantarum (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40671330/
Qin Y et al. – Frontiers in endocrinology (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/41127511/
Banan Khojasteh MH et al. – Critical reviews in food science and nutrition (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/39115011/
Banihani SA – The world journal of men's health (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40583024/
Chang J et al. – European journal of nutrition (2024). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/38300291/
Giuca MR – European journal of paediatric dentistry (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/39212455/
Xu Q et al. – Zhonghua wei zhong bing ji jiu yi xue (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/39697032/
Jayawardena R et al. – Archives of gynecology and obstetrics (2023). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/36719452/
Muhamad R et al. – Nutrients (2023). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/37447150/
C Curtin A et al. – Journal of dietary supplements (2023). [RCT]. https://pubmed.ncbi.nlm.nih.gov/35109763/
Godfrey KM et al. – PLoS medicine (2023). [RCT]. https://pubmed.ncbi.nlm.nih.gov/38051700/
Hersant H et al. – CNS drugs (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/37603263/
Choi SW et al. – Nutrition research and practice (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/37529262/
Munteanu C et al. – Nutrients (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/38201854/
Field DT et al. – Human psychopharmacology (2022). [RCT]. https://pubmed.ncbi.nlm.nih.gov/35851507/
Ettinger S – Current nutrition reports (2022). [Review]. https://pubmed.ncbi.nlm.nih.gov/36018501/
Bossard V et al. – Nutrition (Burbank, Los Angeles County, Calif.) (2022). [Review]. https://pubmed.ncbi.nlm.nih.gov/35810581/
Stach K et al. – Nutrients (2021). [Review]. https://pubmed.ncbi.nlm.nih.gov/34579110/
Behrens A et al. – Systematic reviews (2020). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32414424/
Khorasani F et al. – Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology (2020). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/31215276/
Reininghaus EZ et al. – Nutrients (2020). [RCT]. https://pubmed.ncbi.nlm.nih.gov/33171595/
Wallace TC et al. – Journal of nutrition in gerontology and geriatrics (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/31502930/
Wilson MP et al. – Journal of inherited metabolic disease (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/30671974/
Boelig RC et al. – The Cochrane database of systematic reviews (2016). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/27168518/
McParlin C et al. – JAMA (2016). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/27701665/
O'Donnell A et al. – Health technology assessment (Winchester, England) (2016). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/27731292/
Jewell D et al. – The Cochrane database of systematic reviews (2010). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/20824826/
Piazzini DB et al. – Clinical rehabilitation (2007). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/17613571/
Goodyear-Smith F et al. – Annals of family medicine (2004). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/15209206/
O'Connor D et al. – The Cochrane database of systematic reviews (2003). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/12535461/
Jewell D et al. – The Cochrane database of systematic reviews (2003). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/14583914/
De Souza MC et al. – Journal of women's health & gender-based medicine (2000). [RCT]. https://pubmed.ncbi.nlm.nih.gov/10746516/
Macdougall M – The Western journal of medicine (2000). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/10778376/
Kleijnen J et al. – Biological psychiatry (1991). [Review]. https://pubmed.ncbi.nlm.nih.gov/1828703/
37 studies — Vitamin B6
Liu X et al. – The journal of prevention of Alzheimer's disease (2026). [Review]. https://pubmed.ncbi.nlm.nih.gov/41764841/
Althubity AA – Molecular medicine reports (2026). [Review]. https://pubmed.ncbi.nlm.nih.gov/41235668/
Alvarez M et al. – Current nutrition reports (2026). [Review]. https://pubmed.ncbi.nlm.nih.gov/41609902/
Tariq L et al. – Physiologia plantarum (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40671330/
Qin Y et al. – Frontiers in endocrinology (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/41127511/
Banan Khojasteh MH et al. – Critical reviews in food science and nutrition (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/39115011/
Banihani SA – The world journal of men's health (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40583024/
Chang J et al. – European journal of nutrition (2024). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/38300291/
Giuca MR – European journal of paediatric dentistry (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/39212455/
Xu Q et al. – Zhonghua wei zhong bing ji jiu yi xue (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/39697032/
Jayawardena R et al. – Archives of gynecology and obstetrics (2023). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/36719452/
Muhamad R et al. – Nutrients (2023). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/37447150/
C Curtin A et al. – Journal of dietary supplements (2023). [RCT]. https://pubmed.ncbi.nlm.nih.gov/35109763/
Godfrey KM et al. – PLoS medicine (2023). [RCT]. https://pubmed.ncbi.nlm.nih.gov/38051700/
Hersant H et al. – CNS drugs (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/37603263/
Choi SW et al. – Nutrition research and practice (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/37529262/
Munteanu C et al. – Nutrients (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/38201854/
Field DT et al. – Human psychopharmacology (2022). [RCT]. https://pubmed.ncbi.nlm.nih.gov/35851507/
Ettinger S – Current nutrition reports (2022). [Review]. https://pubmed.ncbi.nlm.nih.gov/36018501/
Bossard V et al. – Nutrition (Burbank, Los Angeles County, Calif.) (2022). [Review]. https://pubmed.ncbi.nlm.nih.gov/35810581/
Stach K et al. – Nutrients (2021). [Review]. https://pubmed.ncbi.nlm.nih.gov/34579110/
Behrens A et al. – Systematic reviews (2020). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32414424/
Khorasani F et al. – Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology (2020). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/31215276/
Reininghaus EZ et al. – Nutrients (2020). [RCT]. https://pubmed.ncbi.nlm.nih.gov/33171595/
Wallace TC et al. – Journal of nutrition in gerontology and geriatrics (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/31502930/
Wilson MP et al. – Journal of inherited metabolic disease (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/30671974/
Boelig RC et al. – The Cochrane database of systematic reviews (2016). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/27168518/
McParlin C et al. – JAMA (2016). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/27701665/
O'Donnell A et al. – Health technology assessment (Winchester, England) (2016). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/27731292/
Jewell D et al. – The Cochrane database of systematic reviews (2010). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/20824826/
Piazzini DB et al. – Clinical rehabilitation (2007). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/17613571/
Goodyear-Smith F et al. – Annals of family medicine (2004). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/15209206/
O'Connor D et al. – The Cochrane database of systematic reviews (2003). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/12535461/
Jewell D et al. – The Cochrane database of systematic reviews (2003). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/14583914/
De Souza MC et al. – Journal of women's health & gender-based medicine (2000). [RCT]. https://pubmed.ncbi.nlm.nih.gov/10746516/
Macdougall M – The Western journal of medicine (2000). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/10778376/
Kleijnen J et al. – Biological psychiatry (1991). [Review]. https://pubmed.ncbi.nlm.nih.gov/1828703/
The Benefits of Biotin
Bioactive Form
Biotin (Vitamin B7) is a water-soluble B vitamin that supports the maintenance of normal hair, skin, and mucous membranes. It plays an important role in macronutrient metabolism, helping the body convert fats, carbohydrates, and proteins into energy. While biotin deficiency is relatively rare in the general population, certain groups may benefit from supplementation.
Key Highlights
- Contributes to the maintenance of normal hair (EFSA approved)
- Supports the maintenance of normal skin (EFSA approved)
- Contributes to the maintenance of normal mucous membranes (EFSA approved)
- Supports normal energy-yielding metabolism (EFSA approved)
- Contributes to normal macronutrient metabolism (EFSA approved)
- Contributes to normal functioning of the nervous system (EFSA approved)
- Most beneficial for those with deficiency or at-risk groups
Biochemistry Timeline
Biotin is water-soluble, meaning the body does not store it in large amounts and regular intake is needed. Improvements in nail strength may take 3 to 6 months of consistent supplementation (research on brittle nails used 2,500-3,000 µg/day for several months; Patel et al., 2017).
For hair-related concerns, visible improvements also require patience, as the hair growth cycle means new growth takes several months to become noticeable. If biotin deficiency is confirmed, improvements in skin and energy may be noticed more quickly, within 4 to 8 weeks.
Nail Health
Biotin supplementation has shown the most consistent evidence for brittle nail syndrome. Case reports and small studies have demonstrated improvement in nail thickness and reduced splitting at doses of 2,500-3,000 µg/day (Patel et al., 2017).
While the evidence base is limited to smaller studies, the results have been consistently positive for those with brittle or splitting nails. Biotin supports keratin infrastructure, the structural protein that forms the foundation of both nails and hair.
Nervous System Function
Biotin contributes to the normal functioning of the nervous system, an EFSA-approved health claim. It is involved in the synthesis of myelin, the protective sheath around nerve fibres, and in neurotransmitter activity.
Biotin deficiency has been associated with neurological symptoms including depression, lethargy, and numbness in the extremities (Valizadeh & Valizadeh, 2011, documented neuropsychiatric symptoms as an early manifestation of B12 deficiency, with similar mechanisms relevant to biotin). Ensuring adequate biotin intake supports normal nervous system function as part of overall B vitamin sufficiency.
Summary
Biotin (Vitamin B7) supports the maintenance of normal hair, skin, mucous membranes, and nervous system function. It plays a key role in macronutrient metabolism, helping the body convert food into energy. While biotin deficiency is relatively rare, it is more common among pregnant women, those taking certain medications, and women experiencing hair loss.
We believe in being honest about the evidence: biotin supplementation is most beneficial for those with a deficiency or specific conditions like brittle nails. For those with adequate levels, other nutrients may be more impactful for hair and skin health. As part of a comprehensive supplement plan, biotin supports the body's metabolic and structural needs.
FAQs
Will biotin make my hair grow faster?
If you have a biotin deficiency, supplementation may improve hair health. However, research does not support biotin for hair growth in those with adequate levels. Hair concerns are often multifactorial, involving iron, zinc, vitamin D, and hormonal health. A comprehensive approach is more effective than relying on biotin alone.
How much biotin should I take?
The adequate intake for adults is 30-40 µg per day. Supplements commonly provide much higher doses (1,000-10,000 µg). For brittle nails, research has used 2,500-3,000 µg per day. There is no established upper limit, as toxicity is extremely rare.
Can biotin affect blood test results?
Yes, high-dose biotin supplementation can interfere with certain laboratory tests, including thyroid function tests and troponin (a heart marker). If you take high-dose biotin, inform your healthcare provider before any blood tests.
Are there any side effects?
Biotin is generally well-tolerated with no established upper limit. Side effects are extremely rare. Some people report mild skin breakouts when starting high-dose biotin, though this is not consistently documented in research.
Is biotin safe during pregnancy?
Yes, biotin is considered safe during pregnancy. In fact, biotin requirements may increase during pregnancy, and mild deficiency is relatively common in pregnant women. Consult your healthcare provider for appropriate dosage guidance.
Research
Gaffney PJ et al. – Multiple sclerosis and related disorders (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/41124782/
Chai Y et al. – Asia Pacific journal of clinical nutrition (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39828265/
Zhu Y et al. – European journal of nutrition (2025). [RCT]. https://pubmed.ncbi.nlm.nih.gov/41117955/
Cao AA et al. – Neuro-ophthalmology (Aeolus Press) (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40190376/
Zaraa I et al. – Skin appendage disorders (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40176998/
Yelich et al. — PRISMA review (2024). [Systematic review (PRISMA)]. https://pmc.ncbi.nlm.nih.gov/articles/PMC11324195/
Ma G et al. – Microbiology spectrum (2024). [RCT]. https://pubmed.ncbi.nlm.nih.gov/38687069/
Gan Y et al. – Acta epileptologica (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/40217438/
Karachaliou CE et al. – International journal of molecular sciences (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/38928282/
Lagzi N et al. – International journal of psychiatry in medicine (2023). [RCT]. https://pubmed.ncbi.nlm.nih.gov/37256965/
Berger MM et al. – Clinical nutrition (Edinburgh, Scotland) (2022). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/35365361/
Dasgupta A – Advances in clinical chemistry (2022). [Review]. https://pubmed.ncbi.nlm.nih.gov/35953126/
Zhang Y et al. – Frontiers in nutrition (2022). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/36386951/
Espiritu AI et al. – Multiple sclerosis and related disorders (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/34332461/
Chessa MA et al. – Dermatology and therapy (2020). [Review]. https://pubmed.ncbi.nlm.nih.gov/31749091/
Cree BAC et al. – The Lancet. Neurology (2020). [RCT]. https://pubmed.ncbi.nlm.nih.gov/33222767/
Almohanna et al. — Dermatol Ther (2019). [Comprehensive review].
Piraccini BM et al. – Giornale italiano di dermatologia e venereologia : organo ufficiale, Societa italiana di dermatologia e sifilografia (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/31638351/
Chiavetta A et al. – Dermatologic therapy (2019). [RCT]. https://pubmed.ncbi.nlm.nih.gov/31344296/
Lipner — Cutis (2018). [Review]. https://pubmed.ncbi.nlm.nih.gov/30372723/
Lipner SR et al. – The Journal of dermatological treatment (2018). [Review]. https://pubmed.ncbi.nlm.nih.gov/29057689/
Tourbah A et al. – CNS drugs (2018). [RCT]. https://pubmed.ncbi.nlm.nih.gov/29808469/
Lipner SR — J Am Acad Dermatol (2018). [Review]. https://pubmed.ncbi.nlm.nih.gov/29709619/
Patel et al. — Skin Appendage Disord (2017). [Systematic review]. https://pmc.ncbi.nlm.nih.gov/articles/PMC5582478/
Patel et al. — Skin Appendage Disord (2017). [Systematic review (18 cases)].
Patel et al. — Skin Appendage Disord (2017). [Systematic review (18 cases)]. https://pubmed.ncbi.nlm.nih.gov/28879195/
Li et al. — FDA Safety Communication (2017). [Regulatory]. General
Patel DP et al. - Skin Appendage Disorders (2017). [Systematic Review]. https://pubmed.ncbi.nlm.nih.gov/28879195/
Li D et al. - FDA Safety Communication (2017). [Safety Alert]. Safety
Mock DM - Journal of Nutrition (2017). [Expert Review]. https://pubmed.ncbi.nlm.nih.gov/28053236/
Patel DP et al. — Skin Appendage Disord (2017). [Review]. https://pubmed.ncbi.nlm.nih.gov/28879195/
Mock DM — J Nutr (2017). [Review]. https://pubmed.ncbi.nlm.nih.gov/28490668/
Biotin lab interference — FDA warning (2017). [Safety notice]. https://www.fda.gov/safety/medwatch-safety-alerts-human-medical-products/biotin-may-interfere-lab-tests-fda-safety-communication
Elston MS et al. – The Journal of clinical endocrinology and metabolism (2016). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/27362288/
Tourbah A et al. – Multiple sclerosis (Houndmills, Basingstoke, England) (2016). [RCT]. https://pubmed.ncbi.nlm.nih.gov/27589059/
Sedel F et al. — Mult Scler Relat Disord (2016). [Review]. https://pubmed.ncbi.nlm.nih.gov/27063613/
Sedel et al. — Mult Scler Relat Disord (2015). [Pilot study]. https://pubmed.ncbi.nlm.nih.gov/25432947/
Sedel F et al. - Multiple Sclerosis and Related Disorders (2015). [Phase III RCT]. https://pubmed.ncbi.nlm.nih.gov/26590117/
EFSA NDA Panel — EFSA Journal (2014). [Regulatory / Scientific Opinion]. Regulatory / Foundational
Lapik IA et al. – Voprosy pitaniia (2014). [RCT]. https://pubmed.ncbi.nlm.nih.gov/25300112/
Li J & Wieringa FT — Asia Pac J Clin Nutr (2011). [Review].
Colombo et al. — Nutrients (2010). [Review]. General
Zempleni J et al. — Annu Rev Nutr (2009). [Review]. https://pubmed.ncbi.nlm.nih.gov/19400697/
Albarracin CA et al. – Diabetes/metabolism research and reviews (2008). [RCT]. https://pubmed.ncbi.nlm.nih.gov/17506119/
Scheinfeld N et al. – Journal of drugs in dermatology : JDD (2007). [Review]. https://pubmed.ncbi.nlm.nih.gov/17763607/
Albarracin C et al. – Journal of the cardiometabolic syndrome (2007). [RCT]. https://pubmed.ncbi.nlm.nih.gov/17684468/
Geohas J et al. – The American journal of the medical sciences (2007). [RCT]. https://pubmed.ncbi.nlm.nih.gov/17496732/
Bolander FF – Current opinion in investigational drugs (London, England : 2000) (2006). [Review]. https://pubmed.ncbi.nlm.nih.gov/17086936/
Singer GM et al. – Diabetes technology & therapeutics (2006). [RCT]. https://pubmed.ncbi.nlm.nih.gov/17109595/
Revilla-Monsalve C et al. – Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie (2006). [RCT]. https://pubmed.ncbi.nlm.nih.gov/16677798/
Scher RK et al. – Dermatology nursing (2003). [Review]. https://pubmed.ncbi.nlm.nih.gov/12656000/
Biotin keratin mechanism — established (Established). [Established science].
Biotin pregnancy needs — established (Established). [Clinical observation].
53 studies — Biotin
Gaffney PJ et al. – Multiple sclerosis and related disorders (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/41124782/
Chai Y et al. – Asia Pacific journal of clinical nutrition (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39828265/
Zhu Y et al. – European journal of nutrition (2025). [RCT]. https://pubmed.ncbi.nlm.nih.gov/41117955/
Cao AA et al. – Neuro-ophthalmology (Aeolus Press) (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40190376/
Zaraa I et al. – Skin appendage disorders (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40176998/
Yelich et al. — PRISMA review (2024). [Systematic review (PRISMA)]. https://pmc.ncbi.nlm.nih.gov/articles/PMC11324195/
Ma G et al. – Microbiology spectrum (2024). [RCT]. https://pubmed.ncbi.nlm.nih.gov/38687069/
Gan Y et al. – Acta epileptologica (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/40217438/
Karachaliou CE et al. – International journal of molecular sciences (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/38928282/
Lagzi N et al. – International journal of psychiatry in medicine (2023). [RCT]. https://pubmed.ncbi.nlm.nih.gov/37256965/
Berger MM et al. – Clinical nutrition (Edinburgh, Scotland) (2022). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/35365361/
Dasgupta A – Advances in clinical chemistry (2022). [Review]. https://pubmed.ncbi.nlm.nih.gov/35953126/
Zhang Y et al. – Frontiers in nutrition (2022). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/36386951/
Espiritu AI et al. – Multiple sclerosis and related disorders (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/34332461/
Chessa MA et al. – Dermatology and therapy (2020). [Review]. https://pubmed.ncbi.nlm.nih.gov/31749091/
Cree BAC et al. – The Lancet. Neurology (2020). [RCT]. https://pubmed.ncbi.nlm.nih.gov/33222767/
Almohanna et al. — Dermatol Ther (2019). [Comprehensive review].
Piraccini BM et al. – Giornale italiano di dermatologia e venereologia : organo ufficiale, Societa italiana di dermatologia e sifilografia (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/31638351/
Chiavetta A et al. – Dermatologic therapy (2019). [RCT]. https://pubmed.ncbi.nlm.nih.gov/31344296/
Lipner — Cutis (2018). [Review]. https://pubmed.ncbi.nlm.nih.gov/30372723/
Lipner SR et al. – The Journal of dermatological treatment (2018). [Review]. https://pubmed.ncbi.nlm.nih.gov/29057689/
Tourbah A et al. – CNS drugs (2018). [RCT]. https://pubmed.ncbi.nlm.nih.gov/29808469/
Lipner SR — J Am Acad Dermatol (2018). [Review]. https://pubmed.ncbi.nlm.nih.gov/29709619/
Patel et al. — Skin Appendage Disord (2017). [Systematic review]. https://pmc.ncbi.nlm.nih.gov/articles/PMC5582478/
Patel et al. — Skin Appendage Disord (2017). [Systematic review (18 cases)].
Patel et al. — Skin Appendage Disord (2017). [Systematic review (18 cases)]. https://pubmed.ncbi.nlm.nih.gov/28879195/
Li et al. — FDA Safety Communication (2017). [Regulatory]. General
Patel DP et al. - Skin Appendage Disorders (2017). [Systematic Review]. https://pubmed.ncbi.nlm.nih.gov/28879195/
Li D et al. - FDA Safety Communication (2017). [Safety Alert]. Safety
Mock DM - Journal of Nutrition (2017). [Expert Review]. https://pubmed.ncbi.nlm.nih.gov/28053236/
Patel DP et al. — Skin Appendage Disord (2017). [Review]. https://pubmed.ncbi.nlm.nih.gov/28879195/
Mock DM — J Nutr (2017). [Review]. https://pubmed.ncbi.nlm.nih.gov/28490668/
Biotin lab interference — FDA warning (2017). [Safety notice]. https://www.fda.gov/safety/medwatch-safety-alerts-human-medical-products/biotin-may-interfere-lab-tests-fda-safety-communication
Elston MS et al. – The Journal of clinical endocrinology and metabolism (2016). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/27362288/
Tourbah A et al. – Multiple sclerosis (Houndmills, Basingstoke, England) (2016). [RCT]. https://pubmed.ncbi.nlm.nih.gov/27589059/
Sedel F et al. — Mult Scler Relat Disord (2016). [Review]. https://pubmed.ncbi.nlm.nih.gov/27063613/
Sedel et al. — Mult Scler Relat Disord (2015). [Pilot study]. https://pubmed.ncbi.nlm.nih.gov/25432947/
Sedel F et al. - Multiple Sclerosis and Related Disorders (2015). [Phase III RCT]. https://pubmed.ncbi.nlm.nih.gov/26590117/
EFSA NDA Panel — EFSA Journal (2014). [Regulatory / Scientific Opinion]. Regulatory / Foundational
Lapik IA et al. – Voprosy pitaniia (2014). [RCT]. https://pubmed.ncbi.nlm.nih.gov/25300112/
Li J & Wieringa FT — Asia Pac J Clin Nutr (2011). [Review].
Colombo et al. — Nutrients (2010). [Review]. General
Zempleni J et al. — Annu Rev Nutr (2009). [Review]. https://pubmed.ncbi.nlm.nih.gov/19400697/
Albarracin CA et al. – Diabetes/metabolism research and reviews (2008). [RCT]. https://pubmed.ncbi.nlm.nih.gov/17506119/
Scheinfeld N et al. – Journal of drugs in dermatology : JDD (2007). [Review]. https://pubmed.ncbi.nlm.nih.gov/17763607/
Albarracin C et al. – Journal of the cardiometabolic syndrome (2007). [RCT]. https://pubmed.ncbi.nlm.nih.gov/17684468/
Geohas J et al. – The American journal of the medical sciences (2007). [RCT]. https://pubmed.ncbi.nlm.nih.gov/17496732/
Bolander FF – Current opinion in investigational drugs (London, England : 2000) (2006). [Review]. https://pubmed.ncbi.nlm.nih.gov/17086936/
Singer GM et al. – Diabetes technology & therapeutics (2006). [RCT]. https://pubmed.ncbi.nlm.nih.gov/17109595/
Revilla-Monsalve C et al. – Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie (2006). [RCT]. https://pubmed.ncbi.nlm.nih.gov/16677798/
Scher RK et al. – Dermatology nursing (2003). [Review]. https://pubmed.ncbi.nlm.nih.gov/12656000/
Biotin keratin mechanism — established (Established). [Established science].
Biotin pregnancy needs — established (Established). [Clinical observation].
The Benefits of Folic Acid
Stable form
Folic acid (Vitamin B9) is essential for cell division, DNA synthesis, and the formation of red blood cells. It is perhaps best known for its critical role during pregnancy in preventing neural tube defects, but its benefits extend throughout life, supporting cognitive health, mood, and cardiovascular wellness through homocysteine metabolism.
Key Highlights
- Supplemental folic acid increases maternal folate status; low status is a risk factor for neural tube defects (EFSA approved)
- Contributes to maternal tissue growth during pregnancy (EFSA approved)
- Supports normal blood formation (EFSA approved)
- Contributes to normal amino acid synthesis (EFSA approved)
- Supports normal psychological function (EFSA approved)
- Contributes to the reduction of tiredness and fatigue (EFSA approved)
- Has a role in the process of cell division (EFSA approved)
Biochemistry Timeline
Folate is water-soluble, so blood levels respond relatively quickly to supplementation, typically increasing within 1 to 2 weeks. For pregnancy-related benefits, supplementation should begin at least 1 month before conception, as the neural tube forms within the first 28 days.
For cognitive benefits, the FACIT trial used 3 years of supplementation, suggesting that long-term consistent intake is most beneficial for brain health. Improvements in anaemia-related fatigue may be noticed within 4 to 8 weeks.
Homocysteine Metabolism
Folate, together with vitamins B12 and B6, plays a key role in metabolising homocysteine, an amino acid that at elevated levels is associated with increased cardiovascular risk and cognitive decline.
EFSA recognises that folate contributes to normal homocysteine metabolism. By helping convert homocysteine to methionine, folate supports cardiovascular health and provides the methylation substrates needed for numerous biological processes. Maintaining adequate folate, B12, and B6 levels is one of the most practical ways to keep homocysteine in a healthy range.
Immune Function
Folate supports the normal function of the immune system, an EFSA-approved health claim. It is needed for the rapid cell division that occurs when the immune system mounts a response to infection, including the production of white blood cells and antibodies.
Adequate folate intake ensures that the immune system can respond effectively when needed. This is particularly relevant during pregnancy, when immune demands increase alongside the already elevated folate requirements for fetal development.
Summary
Folic acid (Vitamin B9) is essential for cell division, DNA synthesis, red blood cell formation, and cognitive health. Its most critical role is in preventing neural tube defects during early pregnancy, which is why supplementation is recommended for all women of childbearing age.
Beyond pregnancy, folate supports cognitive function (with research showing reduced dementia risk), homocysteine metabolism, immune function, and energy levels. In Denmark, where food is not fortified with folic acid, awareness of dietary intake and supplementation is particularly important.
FAQs
When should I start taking folic acid before pregnancy?
The Danish Health Authority recommends starting folic acid supplementation at least 1 month before conception and continuing through the first 12 weeks of pregnancy. Since many pregnancies are unplanned, all women of childbearing age who might become pregnant are advised to maintain adequate folate intake.
What is the difference between folate and folic acid?
Folate is the natural form found in food. Folic acid is the synthetic form used in supplements and food fortification. Both are converted to the active form (5-MTHF) in the body. Some people with MTHFR gene variants may process folic acid less efficiently and benefit from methylfolate (5-MTHF) supplements instead.
How much folic acid do I need?
The recommended daily intake for adults is 200-400 µg. For women planning pregnancy, 400 µg of supplemental folic acid is recommended. The European upper limit for supplemental folic acid is 1,000 µg per day.
Can men benefit from folic acid?
Yes, folate supports cognitive health, homocysteine metabolism, and cell division in everyone. It is important for both men and women, though the specific pregnancy-related benefits apply to women.
Are there any side effects?
Folic acid is generally well-tolerated. Very high doses can mask B12 deficiency symptoms, which is why supplementation should be balanced and not exceed recommended levels without medical guidance.
Research
Guo L et al. – Annals of medicine (2026). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/41615824/
Lin H et al. – Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme (2026). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/41617174/
Campisi M et al. – Advances in nutrition (Bethesda, Md.) (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40975498/
Tavares Rodrigues LP et al. – Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40147066/
Soriano-Gonzalez R et al. – Frontiers in nutrition (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/41280388/
Tang X et al. – Journal of the Academy of Nutrition and Dietetics (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39306086/
Ferrari FA et al. – European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40344696/
Zhang L et al. – Nutrients (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39064642/
Seyoum Tola F – Medicine (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38728462/
Matsuo R et al. – Archives of dermatological research (2024). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/38771513/
Mokgalaboni K et al. – Nutrition & diabetes (2024). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/38649347/
Kukor Z – Nutrients (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39408215/
Finkelstein JL et al. – The Cochrane database of systematic reviews (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38189492/
Chang B et al. – Geriatric nursing (New York, N.Y.) (2023). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/36940509/
Habib SS et al. – European review for medical and pharmacological sciences (2023). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/37782175/
Erdoğan K et al. – Journal of nutritional science (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/37771507/
Nutrition Reviews 2022 - B vitamins dementia MA (2022). [SR + meta-analysis]. https://academic.oup.com/nutritionreviews/article-abstract/80/4/931/6357328
Yuan S et al. – The American journal of clinical nutrition (2022). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/36205540/
Jin X et al. – Journal of affective disorders (2022). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/35066009/
Balandeh E et al. – Neuropsychobiology (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/33744893/
Tsai TY et al. – Journal of the American College of Nutrition (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32702250/
Hoxha B et al. – Cells (2021). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/34440744/
van der Burg KP et al. – Nutritional neuroscience (2021). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/31397223/
Raghubeer S et al. – Nutrients (2021). [Review]. https://pubmed.ncbi.nlm.nih.gov/34960114/
Zheng W et al. – Journal of affective disorders (2020). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32063563/
Chapelle N et al. – Gut (2020). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/32989022/
Khan R et al. – Asian journal of psychiatry (2020). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/32403029/
Tsai TY et al. – The British journal of dermatology (2019). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/30074615/
Bulloch RE et al. – Paediatric and perinatal epidemiology (2018). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/29882975/
Toivonen KI et al. – Preventive medicine (2018). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/29802877/
Hiraoka M et al. – Congenital anomalies (2017). [Review]. https://pubmed.ncbi.nlm.nih.gov/28598562/
Liew SC et al. – European journal of medical genetics (2015). [Review]. https://pubmed.ncbi.nlm.nih.gov/25449138/
Butali A et al. – Birth defects research. Part A, Clinical and molecular teratology (2013). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/23670871/
Malouf R et al. – The Cochrane database of systematic reviews (2008). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/18843658/
Durga J et al. - The Lancet (FACIT) (2007). [Landmark RCT]. https://pubmed.ncbi.nlm.nih.gov/17240286/
Dose-dependent effects of folic acid on blood concentrations of homocysteine: a (2005). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/16210710/
Donnelly JG – Critical reviews in clinical laboratory sciences (2001). [Review]. https://pubmed.ncbi.nlm.nih.gov/11451208/
Rasmussen LB et al. – Danish medical bulletin (1998). [Review]. https://pubmed.ncbi.nlm.nih.gov/9587705/
38 studies — Folic Acid
Guo L et al. – Annals of medicine (2026). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/41615824/
Lin H et al. – Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme (2026). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/41617174/
Campisi M et al. – Advances in nutrition (Bethesda, Md.) (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40975498/
Tavares Rodrigues LP et al. – Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40147066/
Soriano-Gonzalez R et al. – Frontiers in nutrition (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/41280388/
Tang X et al. – Journal of the Academy of Nutrition and Dietetics (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39306086/
Ferrari FA et al. – European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40344696/
Zhang L et al. – Nutrients (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39064642/
Seyoum Tola F – Medicine (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38728462/
Matsuo R et al. – Archives of dermatological research (2024). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/38771513/
Mokgalaboni K et al. – Nutrition & diabetes (2024). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/38649347/
Kukor Z – Nutrients (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39408215/
Finkelstein JL et al. – The Cochrane database of systematic reviews (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38189492/
Chang B et al. – Geriatric nursing (New York, N.Y.) (2023). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/36940509/
Habib SS et al. – European review for medical and pharmacological sciences (2023). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/37782175/
Erdoğan K et al. – Journal of nutritional science (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/37771507/
Nutrition Reviews 2022 - B vitamins dementia MA (2022). [SR + meta-analysis]. https://academic.oup.com/nutritionreviews/article-abstract/80/4/931/6357328
Yuan S et al. – The American journal of clinical nutrition (2022). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/36205540/
Jin X et al. – Journal of affective disorders (2022). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/35066009/
Balandeh E et al. – Neuropsychobiology (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/33744893/
Tsai TY et al. – Journal of the American College of Nutrition (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32702250/
Hoxha B et al. – Cells (2021). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/34440744/
van der Burg KP et al. – Nutritional neuroscience (2021). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/31397223/
Raghubeer S et al. – Nutrients (2021). [Review]. https://pubmed.ncbi.nlm.nih.gov/34960114/
Zheng W et al. – Journal of affective disorders (2020). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32063563/
Chapelle N et al. – Gut (2020). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/32989022/
Khan R et al. – Asian journal of psychiatry (2020). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/32403029/
Tsai TY et al. – The British journal of dermatology (2019). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/30074615/
Bulloch RE et al. – Paediatric and perinatal epidemiology (2018). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/29882975/
Toivonen KI et al. – Preventive medicine (2018). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/29802877/
Hiraoka M et al. – Congenital anomalies (2017). [Review]. https://pubmed.ncbi.nlm.nih.gov/28598562/
Liew SC et al. – European journal of medical genetics (2015). [Review]. https://pubmed.ncbi.nlm.nih.gov/25449138/
Butali A et al. – Birth defects research. Part A, Clinical and molecular teratology (2013). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/23670871/
Malouf R et al. – The Cochrane database of systematic reviews (2008). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/18843658/
Durga J et al. - The Lancet (FACIT) (2007). [Landmark RCT]. https://pubmed.ncbi.nlm.nih.gov/17240286/
Dose-dependent effects of folic acid on blood concentrations of homocysteine: a (2005). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/16210710/
Donnelly JG – Critical reviews in clinical laboratory sciences (2001). [Review]. https://pubmed.ncbi.nlm.nih.gov/11451208/
Rasmussen LB et al. – Danish medical bulletin (1998). [Review]. https://pubmed.ncbi.nlm.nih.gov/9587705/
The Benefits of Vitamin B12
Methylated Form
Vitamin B12 (Methylcobalamin) is essential for energy production, nerve health, and red blood cell formation. It plays a vital role in converting food into energy and maintaining healthy neurological function. B12 is also crucial for DNA synthesis and helps prevent megaloblastic anaemia, a condition that can cause fatigue and weakness due to large, improperly formed red blood cells.
Key Highlights
- Supports normal energy-yielding metabolism (EFSA approved)
- Contributes to the reduction of tiredness and fatigue (EFSA approved)
- Supports normal psychological function (EFSA approved)
- Contributes to normal nervous system function (EFSA approved)
- Supports normal red blood cell formation (EFSA approved)
- Contributes to normal homocysteine metabolism (EFSA approved)
Biochemistry Timeline
Vitamin B12 supplementation may take 4 to 8 weeks to show noticeable benefits, particularly in those with a deficiency. Improvements can include enhanced energy levels, better mood, increased cognitive clarity, and improved nerve function. B12 is stored in the liver, so building up adequate reserves takes time. For those with diagnosed deficiency, healthcare providers may recommend higher initial doses to replenish stores more quickly.
Because B12 is water-soluble, your body uses what it needs and excretes the rest, making it generally well-tolerated even at higher supplementation levels.
Mood and Psychological Function
B12 plays a supportive role in the production of serotonin, often referred to as our "feel-good" neurotransmitter, which is closely linked to mood, emotions, and sleep.
Researchers have found evidence that a decrease in vitamin B12 correlates with an increase in depressive symptoms. One study also suggests that adequate B12 status may be associated with better treatment outcomes for depression (Coppen & Bolander-Gouaille, 2005; Penninx et al., 2000; Syed et al., 2013).
EFSA recognises that vitamin B12 contributes to normal psychological function. While more research is needed to fully understand the relationship between B12 and mood, ensuring adequate intake is a sensible first step towards supporting emotional well-being.
Nerve Health and DNA Synthesis
B12 supports the normal functioning of nerve cells and plays a pivotal role in DNA synthesis. One of its most important functions is aiding in the formation of myelin, the protective sheath that surrounds nerves and facilitates efficient nerve signalling.
When B12 levels are low, myelin production can be disrupted, potentially leading to impaired nervous system function. Neurological symptoms of deficiency can include numbness, tingling, and difficulty with balance (Langan & Goodbred, 2017; O'Leary & Samman, 2010).
EFSA confirms that vitamin B12 contributes to normal functioning of the nervous system and has a role in the process of cell division, which includes DNA synthesis. Ensuring adequate B12 intake is particularly important for maintaining long-term nerve health.
Summary
Vitamin B12 (Methylcobalamin) is crucial for energy production, nerve health, and red blood cell formation. It helps convert food into energy, prevents megaloblastic anaemia, and supports DNA synthesis. Supplementation may take 4 to 8 weeks to show benefits, including improved energy, better mood, clearer thinking, and enhanced nerve function.
B12 is primarily found in animal products, making vegans and vegetarians particularly susceptible to deficiency. Symptoms of low B12 can include fatigue, weakness, and cognitive difficulties. For those at risk, supplementation offers a practical and well-supported way to maintain optimal B12 levels and overall well-being.
FAQs
Who should consider vitamin B12 supplementation?
People at higher risk of deficiency include vegetarians, vegans, older adults, and those with conditions affecting nutrient absorption (such as coeliac disease or Crohn's disease). If you fall into any of these groups, supplementation can be a practical way to maintain adequate levels.
What are the signs of vitamin B12 deficiency?
Common symptoms may include persistent fatigue, weakness, pale skin, numbness or tingling in hands and feet, difficulty with balance, and cognitive difficulties such as poor concentration or memory. If you experience these symptoms, it is worth speaking with your healthcare provider.
Are there any side effects of vitamin B12 supplementation?
Vitamin B12 is generally considered safe and well-tolerated. Because it is water-soluble, excess amounts are typically excreted by the body. In rare cases, very high doses may cause mild effects such as digestive discomfort.
Can vitamin B12 interact with medications?
B12 can interact with certain medications, including metformin (commonly used for diabetes) and proton pump inhibitors (acid-reducing drugs). If you take any regular medication, consult your healthcare provider before starting supplementation.
Is vitamin B12 safe during pregnancy?
Yes, adequate B12 is important for healthy fetal development. Pregnant and breastfeeding women should ensure sufficient intake, and supplementation may be particularly relevant for those following plant-based diets. Always consult your healthcare provider for guidance on appropriate dosage during pregnancy.
Research
B12 & cognition review — ScienceDirect (2025). [Narrative review]. https://www.sciencedirect.com/science/article/pii/S266645932500040X
Cureus - Neurological Sequelae SR (2025). [Systematic Review]. https://pmc.ncbi.nlm.nih.gov/articles/PMC12143585/
Habtie TE et al. – Oxidative medicine and cellular longevity (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40458194/
Ulloque-Badaracco JR et al. – Frontiers in public health (2025). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/39991695/
Castillo LF et al. – Annual review of nutrition (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40315282/
Janko RK et al. – American journal of health promotion : AJHP (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39136672/
Verduci E et al. – Journal of pediatric gastroenterology and nutrition (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40819279/
Deng XL et al. – Frontiers in endocrinology (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40612436/
Niklewicz et al. — meta-analysis (2024). [SR + meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/39373282/
Vegan B12 scoping review (2024). [Scoping review]. https://pmc.ncbi.nlm.nih.gov/articles/PMC11124153/
Sandoval Leiva T et al. – Nutricion hospitalaria (2024). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/38896115/
Abdelwahab OA et al. – Irish journal of medical science (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38231320/
Desmond MA et al. – Nutrients (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38474851/
Zhang N et al. – Clinical nutrition (Edinburgh, Scotland) (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38824900/
Bekdash RA – International journal of molecular sciences (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/38612845/
German cross-sectional — Annals of Medicine (2023). [Cross-sectional]. https://www.tandfonline.com/doi/full/10.1080/07853890.2023.2269969
Alruwaili M et al. - Healthcare (2023). [Systematic Review & Meta-Analysis]. https://pubmed.ncbi.nlm.nih.gov/37046885/
Jensen CF – Nutrition reviews (2023). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/36413044/
Neufingerl N et al. – Nutrients (2023). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/37892416/
Manapurath R et al. – The Journal of nutrition (2023). [RCT]. https://pubmed.ncbi.nlm.nih.gov/36889645/
Fardous AM et al. – Nutrients (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/37960352/
Heilfort L et al. – Nutrition and cancer (2023). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/35819060/
Modica JS et al. – Journal of the neurological sciences (2023). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/37210937/
Clements M et al. – Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research (2022). [RCT]. https://pubmed.ncbi.nlm.nih.gov/36128889/
McMullin PR et al. – Current pain and headache reports (2022). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/35794449/
Rogers et al. — meta-analysis (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/33809274/
Nalder et al. — Nutrients (2021). [Systematic review & MA]. https://pubmed.ncbi.nlm.nih.gov/34371786/
Rashid S et al. – European journal of haematology (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/33341967/
Anamnart C et al. – Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia (2021). [RCT]. https://pubmed.ncbi.nlm.nih.gov/33992189/
Neufingerl N et al. – Nutrients (2021). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/35010904/
Karcz K et al. – Critical reviews in food science and nutrition (2021). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/32319307/
Stein J et al. – European journal of neurology (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/33619867/
Sawangjit R et al. – Journal of alternative and complementary medicine (New York, N.Y.) (2020). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32716261/
Li X et al. – International journal of medical sciences (2020). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32218697/
Julian T et al. – Nutrients (2020). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/32722436/
Obeid et al. — Clin Chem Lab Med (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/31188752/
Ma F et al. – Current Alzheimer research (2019). [RCT]. https://pubmed.ncbi.nlm.nih.gov/31345146/
Naik S et al. – Nutrients (2019). [RCT]. https://pubmed.ncbi.nlm.nih.gov/31590426/
Sanderson SM et al. – Nature reviews. Cancer (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/31515518/
Yang W et al. – Journal of diabetes (2019). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/30615306/
Obeid R et al. — Nutrients (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/30791639/
Molloy AM - Annals of NY Academy of Sciences (2018). [Review]. https://pubmed.ncbi.nlm.nih.gov/29377209/
Langan & Goodbred — Am Fam Physician (2017). [Clinical review]. https://pubmed.ncbi.nlm.nih.gov/28925645/
Green R et al. - Nature Reviews Disease Primers (2017). [Comprehensive Review]. https://pubmed.ncbi.nlm.nih.gov/28660890/
Zhang DM et al. – Journal of geriatric psychiatry and neurology (2017). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/28248558/
Green R et al. — Nat Rev Dis Primers (2017). [Seminal review]. https://pubmed.ncbi.nlm.nih.gov/28660890/
Langan RC & Goodbred AJ — Am Fam Physician (2017). [Clinical review]. https://pubmed.ncbi.nlm.nih.gov/28925645/
Coppedè F – Archives of toxicology (2016). [Review]. https://pubmed.ncbi.nlm.nih.gov/27600794/
Rizzo G et al. — Nutrients (2016). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/27886044/
Dangour AD et al. - American Journal of Clinical Nutrition (OPEN Trial) (2015). [RCT]. https://pubmed.ncbi.nlm.nih.gov/26135351/
Pawlak et al. — Eur J Clin Nutr (2014). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/24667752/
Scaglione F et al. – Xenobiotica; the fate of foreign compounds in biological systems (2014). [Review]. https://pubmed.ncbi.nlm.nih.gov/24494987/
Stabler SP - New England Journal of Medicine (2013). [Clinical Review]. https://pubmed.ncbi.nlm.nih.gov/23301732/
Pietrzik K et al. – Clinical pharmacokinetics (2010). [Review]. https://pubmed.ncbi.nlm.nih.gov/20608755/
Tucker KL et al. - American Journal of Clinical Nutrition (Framingham) (2000). [Cohort Study]. https://pubmed.ncbi.nlm.nih.gov/10648266/
Lewis DP et al. – The Annals of pharmacotherapy (1995). [Review]. https://pubmed.ncbi.nlm.nih.gov/8520091/
B12 absorption mechanism — established (Established). [Established science].
57 studies — Vitamin B12
B12 & cognition review — ScienceDirect (2025). [Narrative review]. https://www.sciencedirect.com/science/article/pii/S266645932500040X
Cureus - Neurological Sequelae SR (2025). [Systematic Review]. https://pmc.ncbi.nlm.nih.gov/articles/PMC12143585/
Habtie TE et al. – Oxidative medicine and cellular longevity (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40458194/
Ulloque-Badaracco JR et al. – Frontiers in public health (2025). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/39991695/
Castillo LF et al. – Annual review of nutrition (2025). [Review]. https://pubmed.ncbi.nlm.nih.gov/40315282/
Janko RK et al. – American journal of health promotion : AJHP (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/39136672/
Verduci E et al. – Journal of pediatric gastroenterology and nutrition (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40819279/
Deng XL et al. – Frontiers in endocrinology (2025). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/40612436/
Niklewicz et al. — meta-analysis (2024). [SR + meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/39373282/
Vegan B12 scoping review (2024). [Scoping review]. https://pmc.ncbi.nlm.nih.gov/articles/PMC11124153/
Sandoval Leiva T et al. – Nutricion hospitalaria (2024). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/38896115/
Abdelwahab OA et al. – Irish journal of medical science (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38231320/
Desmond MA et al. – Nutrients (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38474851/
Zhang N et al. – Clinical nutrition (Edinburgh, Scotland) (2024). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/38824900/
Bekdash RA – International journal of molecular sciences (2024). [Review]. https://pubmed.ncbi.nlm.nih.gov/38612845/
German cross-sectional — Annals of Medicine (2023). [Cross-sectional]. https://www.tandfonline.com/doi/full/10.1080/07853890.2023.2269969
Alruwaili M et al. - Healthcare (2023). [Systematic Review & Meta-Analysis]. https://pubmed.ncbi.nlm.nih.gov/37046885/
Jensen CF – Nutrition reviews (2023). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/36413044/
Neufingerl N et al. – Nutrients (2023). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/37892416/
Manapurath R et al. – The Journal of nutrition (2023). [RCT]. https://pubmed.ncbi.nlm.nih.gov/36889645/
Fardous AM et al. – Nutrients (2023). [Review]. https://pubmed.ncbi.nlm.nih.gov/37960352/
Heilfort L et al. – Nutrition and cancer (2023). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/35819060/
Modica JS et al. – Journal of the neurological sciences (2023). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/37210937/
Clements M et al. – Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research (2022). [RCT]. https://pubmed.ncbi.nlm.nih.gov/36128889/
McMullin PR et al. – Current pain and headache reports (2022). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/35794449/
Rogers et al. — meta-analysis (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/33809274/
Nalder et al. — Nutrients (2021). [Systematic review & MA]. https://pubmed.ncbi.nlm.nih.gov/34371786/
Rashid S et al. – European journal of haematology (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/33341967/
Anamnart C et al. – Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia (2021). [RCT]. https://pubmed.ncbi.nlm.nih.gov/33992189/
Neufingerl N et al. – Nutrients (2021). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/35010904/
Karcz K et al. – Critical reviews in food science and nutrition (2021). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/32319307/
Stein J et al. – European journal of neurology (2021). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/33619867/
Sawangjit R et al. – Journal of alternative and complementary medicine (New York, N.Y.) (2020). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32716261/
Li X et al. – International journal of medical sciences (2020). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/32218697/
Julian T et al. – Nutrients (2020). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/32722436/
Obeid et al. — Clin Chem Lab Med (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/31188752/
Ma F et al. – Current Alzheimer research (2019). [RCT]. https://pubmed.ncbi.nlm.nih.gov/31345146/
Naik S et al. – Nutrients (2019). [RCT]. https://pubmed.ncbi.nlm.nih.gov/31590426/
Sanderson SM et al. – Nature reviews. Cancer (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/31515518/
Yang W et al. – Journal of diabetes (2019). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/30615306/
Obeid R et al. — Nutrients (2019). [Review]. https://pubmed.ncbi.nlm.nih.gov/30791639/
Molloy AM - Annals of NY Academy of Sciences (2018). [Review]. https://pubmed.ncbi.nlm.nih.gov/29377209/
Langan & Goodbred — Am Fam Physician (2017). [Clinical review]. https://pubmed.ncbi.nlm.nih.gov/28925645/
Green R et al. - Nature Reviews Disease Primers (2017). [Comprehensive Review]. https://pubmed.ncbi.nlm.nih.gov/28660890/
Zhang DM et al. – Journal of geriatric psychiatry and neurology (2017). [Meta-analysis]. https://pubmed.ncbi.nlm.nih.gov/28248558/
Green R et al. — Nat Rev Dis Primers (2017). [Seminal review]. https://pubmed.ncbi.nlm.nih.gov/28660890/
Langan RC & Goodbred AJ — Am Fam Physician (2017). [Clinical review]. https://pubmed.ncbi.nlm.nih.gov/28925645/
Coppedè F – Archives of toxicology (2016). [Review]. https://pubmed.ncbi.nlm.nih.gov/27600794/
Rizzo G et al. — Nutrients (2016). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/27886044/
Dangour AD et al. - American Journal of Clinical Nutrition (OPEN Trial) (2015). [RCT]. https://pubmed.ncbi.nlm.nih.gov/26135351/
Pawlak et al. — Eur J Clin Nutr (2014). [Systematic review]. https://pubmed.ncbi.nlm.nih.gov/24667752/
Scaglione F et al. – Xenobiotica; the fate of foreign compounds in biological systems (2014). [Review]. https://pubmed.ncbi.nlm.nih.gov/24494987/
Stabler SP - New England Journal of Medicine (2013). [Clinical Review]. https://pubmed.ncbi.nlm.nih.gov/23301732/
Pietrzik K et al. – Clinical pharmacokinetics (2010). [Review]. https://pubmed.ncbi.nlm.nih.gov/20608755/
Tucker KL et al. - American Journal of Clinical Nutrition (Framingham) (2000). [Cohort Study]. https://pubmed.ncbi.nlm.nih.gov/10648266/
Lewis DP et al. – The Annals of pharmacotherapy (1995). [Review]. https://pubmed.ncbi.nlm.nih.gov/8520091/
B12 absorption mechanism — established (Established). [Established science].
The Benefits of PABA
Para-aminobenzoic acid (PABA) is a naturally occurring compound found in certain foods and sometimes classified as part of the B-vitamin family, though it is not a true vitamin. It is a component of folic acid and is found in foods like whole grains, eggs, and liver.
PABA has traditionally been included in B-complex formulas, where it complements the other B vitamins. While research on PABA's standalone benefits is limited, it has been studied in the context of skin health, hair pigmentation, and its role as a precursor in folic acid synthesis.
Key Highlights
- A natural component of the folic acid molecule
- Found in whole grains, eggs, liver, and brewer's yeast
- Traditionally included in comprehensive B-complex formulas
- Supports normal folic acid metabolism
Biochemistry Timeline
PABA is absorbed in the small intestine and is utilised by intestinal bacteria as a building block for folic acid synthesis. It is water-soluble and excess amounts are excreted through the kidneys. As a component of folic acid, PABA indirectly supports the many processes that depend on adequate folate status.
Summary
PABA is a naturally occurring compound that serves as a building block for folic acid. While not classified as an essential nutrient on its own, it complements B-complex formulas and supports the body's natural folate metabolism. It is found in many everyday foods and has a long history of safe use in supplements.
FAQs
Is PABA a vitamin?
PABA is sometimes referred to as vitamin B10, but it is not officially classified as a vitamin. It is a naturally occurring compound that forms part of the folic acid molecule and is found in many foods.
Why is PABA in B-complex supplements?
PABA has traditionally been included in comprehensive B-complex formulas because of its relationship to folic acid and its complementary role alongside the B vitamins. It supports the body's natural folate metabolism.
Research
Costa BA, Godoy RSM, Henrique-Gomes L et al. (2025). Dietary para-aminobenzoic acid, uric acid, and antibiotics modulate the susceptibility of Anopheles darlingi and Anopheles albimanus to Plasmodium berghei. Front Cell Infect Microbiol. https://pubmed.ncbi.nlm.nih.gov/41409545/
Katano A, Mori A, Nonaka D et al. (2025). Biosynthesis of 2,5-pyridinedicarboxylate from glucose via p-aminobenzoic acid in Escherichia coli. Metab Eng. https://pubmed.ncbi.nlm.nih.gov/40865792/
Ehrmann AK, Wronska AK, Perli T et al. (2024). Engineering Saccharomyces cerevisiae for fast vitamin-independent aerobic growth. Metab Eng. https://pubmed.ncbi.nlm.nih.gov/38364997/
Dial CN, Speare L, Sharpe GC et al. (2021). Para-Aminobenzoic Acid, Calcium, and c-di-GMP Induce Formation of Cohesive, Syp-Polysaccharide-Dependent Biofilms in Vibrio fischeri. mBio. https://pubmed.ncbi.nlm.nih.gov/34607467/
Li A, Wu Y, Pulli B et al. (2019). Myeloperoxidase Molecular MRI Reveals Synergistic Combination Therapy in Murine Experimental Autoimmune Neuroinflammation. Radiology. https://pubmed.ncbi.nlm.nih.gov/31478802/
Xiao X, Saha P, Yeoh BS et al. (2018). Myeloperoxidase deficiency attenuates systemic and dietary iron-induced adverse effects. J Nutr Biochem. https://pubmed.ncbi.nlm.nih.gov/30218980/
Virk B, Jia J, Maynard CA et al. (2016). Folate Acts in E. coli to Accelerate C. elegans Aging Independently of Bacterial Biosynthesis. Cell Rep. https://pubmed.ncbi.nlm.nih.gov/26876180/
Duberley KE, Heales SJ, Abramov AY et al. (2014). Effect of Coenzyme Q10 supplementation on mitochondrial electron transport chain activity and mitochondrial oxidative stress in Coenzyme Q10 deficient human neuronal cells. Int J Biochem Cell Biol. https://pubmed.ncbi.nlm.nih.gov/24534273/
Platteeuw JJ (2006). Resistance to sulphadrug-based antifolate therapy in malaria: are we looking in the right place?. Trop Med Int Health [Review]. https://pubmed.ncbi.nlm.nih.gov/16772001/
Asrar FM, O'Connor DL (2005). Bacterially synthesized folate and supplemental folic acid are absorbed across the large intestine of piglets. J Nutr Biochem. https://pubmed.ncbi.nlm.nih.gov/16081276/
Sonwalkar SA, Holbrook IB, Phillips I et al. (2003). A prospective, comparative study of the para-aminobenzoic acid test and faecal elastase 1 in the assessment of exocrine pancreatic function. Aliment Pharmacol Ther. https://pubmed.ncbi.nlm.nih.gov/12562462/
Ray SD, Balasubramanian G, Bagchi D et al. (2001). Ca(2+)-calmodulin antagonist chlorpromazine and poly(ADP-ribose) polymerase modulators 4-aminobenzamide and nicotinamide influence hepatic expression of BCL-XL and P53 and protect against acetaminophen-induced programmed and unprogrammed cell death in mice. Free Radic Biol Med. https://pubmed.ncbi.nlm.nih.gov/11461765/
Gregory JF 3rd, Caudill MA, Opalko FJ et al. (2001). Kinetics of folate turnover in pregnant women (second trimester) and nonpregnant controls during folic acid supplementation: stable-isotopic labeling of plasma folate, urinary folate and folate catabolites shows subtle effects of pregnancy on turnover of folate pools. J Nutr. https://pubmed.ncbi.nlm.nih.gov/11435509/
Higgins JR, Quinlivan EP, McPartlin J et al. (2000). The relationship between increased folate catabolism and the increased requirement for folate in pregnancy. BJOG. https://pubmed.ncbi.nlm.nih.gov/11002960/
Bruno MJ, Borm JJ, Hoek FJ et al. (1997). Comparative effects of enteric-coated pancreatin microsphere therapy after conventional and pylorus-preserving pancreatoduodenectomy. Br J Surg. https://pubmed.ncbi.nlm.nih.gov/9240133/
Weinberg JM, Roeser NF, Davis JA et al. (1997). Glycine-protected, hypoxic, proximal tubules develop severely compromised energetic function. Kidney Int. https://pubmed.ncbi.nlm.nih.gov/9211356/
Upton SJ, Tilley M, Brillhart DB (1995). Effects of select medium supplements on in vitro development of Cryptosporidium parvum in HCT-8 cells. J Clin Microbiol. https://pubmed.ncbi.nlm.nih.gov/7714194/
Shamberger RC, Hendren WH, Leichtner AM (1994). Long-term nutritional and metabolic consequences of pancreaticoduodenectomy in children. Surgery. https://pubmed.ncbi.nlm.nih.gov/7907435/
Lamers CB, Jansen JB, Hafkenscheid JC et al. (1990). Evaluation of tests of exocrine and endocrine pancreatic function in older patients with cystic fibrosis. Pancreas. https://pubmed.ncbi.nlm.nih.gov/1688391/
Gilks CF, Jarra W, Harvey-Wood K et al. (1989). Host diet in experimental rodent malaria: a variable which can compromise experimental design and interpretation. Parasitology. https://pubmed.ncbi.nlm.nih.gov/2668862/
20 studies — PABA
Costa BA, Godoy RSM, Henrique-Gomes L et al. (2025). Dietary para-aminobenzoic acid, uric acid, and antibiotics modulate the susceptibility of Anopheles darlingi and Anopheles albimanus to Plasmodium berghei. Front Cell Infect Microbiol. https://pubmed.ncbi.nlm.nih.gov/41409545/
Katano A, Mori A, Nonaka D et al. (2025). Biosynthesis of 2,5-pyridinedicarboxylate from glucose via p-aminobenzoic acid in Escherichia coli. Metab Eng. https://pubmed.ncbi.nlm.nih.gov/40865792/
Ehrmann AK, Wronska AK, Perli T et al. (2024). Engineering Saccharomyces cerevisiae for fast vitamin-independent aerobic growth. Metab Eng. https://pubmed.ncbi.nlm.nih.gov/38364997/
Dial CN, Speare L, Sharpe GC et al. (2021). Para-Aminobenzoic Acid, Calcium, and c-di-GMP Induce Formation of Cohesive, Syp-Polysaccharide-Dependent Biofilms in Vibrio fischeri. mBio. https://pubmed.ncbi.nlm.nih.gov/34607467/
Li A, Wu Y, Pulli B et al. (2019). Myeloperoxidase Molecular MRI Reveals Synergistic Combination Therapy in Murine Experimental Autoimmune Neuroinflammation. Radiology. https://pubmed.ncbi.nlm.nih.gov/31478802/
Xiao X, Saha P, Yeoh BS et al. (2018). Myeloperoxidase deficiency attenuates systemic and dietary iron-induced adverse effects. J Nutr Biochem. https://pubmed.ncbi.nlm.nih.gov/30218980/
Virk B, Jia J, Maynard CA et al. (2016). Folate Acts in E. coli to Accelerate C. elegans Aging Independently of Bacterial Biosynthesis. Cell Rep. https://pubmed.ncbi.nlm.nih.gov/26876180/
Duberley KE, Heales SJ, Abramov AY et al. (2014). Effect of Coenzyme Q10 supplementation on mitochondrial electron transport chain activity and mitochondrial oxidative stress in Coenzyme Q10 deficient human neuronal cells. Int J Biochem Cell Biol. https://pubmed.ncbi.nlm.nih.gov/24534273/
Platteeuw JJ (2006). Resistance to sulphadrug-based antifolate therapy in malaria: are we looking in the right place?. Trop Med Int Health [Review]. https://pubmed.ncbi.nlm.nih.gov/16772001/
Asrar FM, O'Connor DL (2005). Bacterially synthesized folate and supplemental folic acid are absorbed across the large intestine of piglets. J Nutr Biochem. https://pubmed.ncbi.nlm.nih.gov/16081276/
Sonwalkar SA, Holbrook IB, Phillips I et al. (2003). A prospective, comparative study of the para-aminobenzoic acid test and faecal elastase 1 in the assessment of exocrine pancreatic function. Aliment Pharmacol Ther. https://pubmed.ncbi.nlm.nih.gov/12562462/
Ray SD, Balasubramanian G, Bagchi D et al. (2001). Ca(2+)-calmodulin antagonist chlorpromazine and poly(ADP-ribose) polymerase modulators 4-aminobenzamide and nicotinamide influence hepatic expression of BCL-XL and P53 and protect against acetaminophen-induced programmed and unprogrammed cell death in mice. Free Radic Biol Med. https://pubmed.ncbi.nlm.nih.gov/11461765/
Gregory JF 3rd, Caudill MA, Opalko FJ et al. (2001). Kinetics of folate turnover in pregnant women (second trimester) and nonpregnant controls during folic acid supplementation: stable-isotopic labeling of plasma folate, urinary folate and folate catabolites shows subtle effects of pregnancy on turnover of folate pools. J Nutr. https://pubmed.ncbi.nlm.nih.gov/11435509/
Higgins JR, Quinlivan EP, McPartlin J et al. (2000). The relationship between increased folate catabolism and the increased requirement for folate in pregnancy. BJOG. https://pubmed.ncbi.nlm.nih.gov/11002960/
Bruno MJ, Borm JJ, Hoek FJ et al. (1997). Comparative effects of enteric-coated pancreatin microsphere therapy after conventional and pylorus-preserving pancreatoduodenectomy. Br J Surg. https://pubmed.ncbi.nlm.nih.gov/9240133/
Weinberg JM, Roeser NF, Davis JA et al. (1997). Glycine-protected, hypoxic, proximal tubules develop severely compromised energetic function. Kidney Int. https://pubmed.ncbi.nlm.nih.gov/9211356/
Upton SJ, Tilley M, Brillhart DB (1995). Effects of select medium supplements on in vitro development of Cryptosporidium parvum in HCT-8 cells. J Clin Microbiol. https://pubmed.ncbi.nlm.nih.gov/7714194/
Shamberger RC, Hendren WH, Leichtner AM (1994). Long-term nutritional and metabolic consequences of pancreaticoduodenectomy in children. Surgery. https://pubmed.ncbi.nlm.nih.gov/7907435/
Lamers CB, Jansen JB, Hafkenscheid JC et al. (1990). Evaluation of tests of exocrine and endocrine pancreatic function in older patients with cystic fibrosis. Pancreas. https://pubmed.ncbi.nlm.nih.gov/1688391/
Gilks CF, Jarra W, Harvey-Wood K et al. (1989). Host diet in experimental rodent malaria: a variable which can compromise experimental design and interpretation. Parasitology. https://pubmed.ncbi.nlm.nih.gov/2668862/
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Questions?
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B-vitamins work together to support the release of energy from the food you eat, contribute to normal brain and nervous system function, and help maintain healthy red blood cell formation. They are essential for everyday vitality, especially during periods of stress, high mental demand, or increased physical activity. They don’t stimulate the body; they simply support its natural processes.
If you are unsure, try our free online health assessment by clicking "Take Test Now" at the top of the page. It takes just a few minutes and provides personalised suggestions, no subscription needed.
Take it in the morning or at lunchtime with food and water. B vitamins support energy metabolism, so earlier in the day tends to work best.
Yes, B vitamins work well alongside most other supplements. If you are unsure what combination is right for you, try our free health assessment by clicking "Take Test Now" at the top of the page.
We recommend taking it with food and water for better absorption and comfort. Some B vitamins can cause mild nausea on an empty stomach.
This supplement is not recommended during pregnancy or breastfeeding. Nutrient needs during this time are unique, and prenatal supplements are specifically designed to meet them safely. If you are pregnant, nursing, or planning to conceive, please consult your healthcare provider to choose the most suitable product for you.
Yes, B vitamins are water-soluble and safe for long-term daily use when taken as directed.
This product is generally well tolerated. B vitamins may cause urine to appear bright yellow, which is completely normal and harmless.
If you are taking medication or are under medical supervision, speak to your doctor before use to ensure it is safe for you.
B-vitamins are found in many everyday foods, especially whole grains, legumes, nuts, seeds, dairy, meat, and leafy greens. However, daily needs can shift depending on factors like stress levels, energy demands, diet variety, alcohol intake, and absorption efficiency. A supplement provides reliable amounts in a single dose, helping fill nutritional gaps when diet alone may not be enough. It’s not about replacing food, it’s about supporting your body in a balanced way.
Many people notice improvements in energy and focus within two to four weeks of consistent use. Individual results depend on your baseline levels and lifestyle.
Follow the recommended dose on the label. You can take your capsules together with a meal or split them across the day.
Simply continue with your usual routine the next day. There is no need to double up.
This supplement is designed for adults and is not suitable for children. Older adults may benefit, but should consult a healthcare provider for individual advice.
This product does not intentionally include common allergens. However, it is manufactured in a facility that handles allergy-based materials, so cross-contamination is possible. If you have severe allergies, please review the ingredient list carefully.
Manufactured in the UK under strict GMP standards, then handled and packed in Denmark with full traceability. Each batch undergoes rigorous quality and safety checks.
Yes. The capsule shell is made from plant-based cellulose (HPMC), and all active ingredients are suitable for vegans and vegetarians.
Every 30 days we prepare a fresh delivery of your personalized supplements. Your first order arrives in a reusable dispenser box, and every refill after that comes in a biodegradable pouch that slots straight into your dispenser. There's no lock-in, so you can pause, skip, or cancel anytime from your account.
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Yes. You can retake the quiz anytime to refresh your recommendation, or add, swap, or remove individual supplements from your account dashboard. Your plan evolves with you.
Our supplements are formulated to EU safety standards and produced in certified facilities. The quiz screens for interactions with anything you're already taking and flags potential conflicts. For specific medical conditions or prescription drugs, we always recommend checking with your doctor before starting.
Orders are dispatched within 1 to 3 business days of payment. Delivery typically takes another 2 to 10 business days depending on your location and chosen carrier. Once your order ships, you'll receive a tracking link by email so you can follow it the whole way.
We currently ship to Denmark, Scandinavia, and select European countries. Available delivery areas are shown at checkout. If your country isn't listed, email support@persona-path.com and we'll see what's possible.
First-time customers are covered by our 30-day money-back guarantee. If you're not fully satisfied with your first purchase, email support@persona-path.com within 30 days and we'll refund you in full. You don't need to return the supplements, and refunds are processed to your original payment method within 5 business days of approval.
Yes. In addition to our 30-day guarantee, EU law gives you a 14-day right of withdrawal from the day you receive your order. Email support@persona-path.com within 14 days and we'll refund the full purchase price, including standard delivery, within 14 days of your request.
Email support@persona-path.com within 7 days with your order number and a photo of the issue. We'll arrange a free replacement or issue a full refund for the affected product. We cover all costs in these cases.
Yes. Your quiz answers are processed under GDPR with your explicit consent and used only to generate your personalized plan. We never sell your data or share it with advertising platforms. You can request deletion at any time. Full details in our privacy policy.
Our quiz screens for pregnancy, breastfeeding, and major health conditions, and the algorithm adjusts your recommendations accordingly. We're not a substitute for medical advice, so please check with your doctor before starting any new supplement if you're pregnant, breastfeeding, or managing a health condition.