L-Tyrosine | PersonaPath Ingredients

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L-Tyrosine


Found in:
Poultry, fish, dairy products, nuts, seeds, and soy products

Form Used:
L-Tyrosine

Supplier:
Nutribl - Troo Health Care Ltd
Essex, United Kingdom

Final Packging:
PersonaPath
Horsens, Denmark

Function:
Amino acid used to produce dopamine, adrenaline, and thyroid hormones, supporting mood, stress response, and cognitive function

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At PersonaPath

We use free-form L-Tyrosine, the naturally occurring amino acid, because it’s easily absorbed and directly supports the production of key neurotransmitters involved in focus, alertness, and stress resilience.

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Pairs perfectly with L-Tryptophan to support a calmer, more restful night routine

Official Health Claims

All health claims on this page are approved by the European Food Safety Authority (EFSA) and comply with the Danish Veterinary and Food Administration (Fødevarestyrelsen) regulations.*

Below, you’ll find only official, permitted health claims, nothing exaggerated, nothing misleading. Just clear, science-backed information to help you make informed decisions about your health.


Regulations as of 2025

As of now, there are no authorized health claims for L‑tyrosine in the EU under the EU Register of Nutrition and Health Claims (Regulation (EC) No 1924/2006).

Evidence that Matters

We focus on nutrients backed by solid research and stay up to date with the latest science.

Here are a few studies that show why we choose them that you might find interesting.

Tyrosine for the treatment of depression

American Journal of Psychiatry


L-tyrosine alleviates autism-like behavior in mice by remodeling the gut microbiota

Southwest University


Oral l-tyrosine supplementation augments the vasoconstriction response to whole-body cooling in older adults

Department of Physical Therapy, Des Moines University, USA


The Antidepressant Effect of L-Tyrosine-Loaded Nanoparticles: Behavioral Aspects

Southwest University


l-Tyrosine as an immunological adjuvant

International Archives of Allergy and Applied Immunology


Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands--A review

Leiden University, Netherlands


Impact of L-theanine and L-tyrosine on markers of stress and cognitive performance in response to a virtual reality based active shooter training drill

Texas State University, San Marcos, TX, USA


L-tyrosine to alleviate the effects of stress?

Universidad Autónoma Metropolitana‑Cuajimalpa, Mexico

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There are currently 4,993 published studies on L-Tyrosine

We continually assess new findings to ensure our approach stays grounded in the latest science

Numbers as of 2025