L-Tyrosine is a non-essential amino acid, meaning the body can produce it from another amino acid called phenylalanine. It is naturally found in high-protein foods such as chicken, turkey, fish, dairy products, and nuts. L-Tyrosine plays a crucial role in the production of important neurotransmitters like dopamine, norepinephrine, and epinephrine, which are vital for maintaining cognitive function and mood regulation. Research on L-Tyrosine has explored its potential effects on cognitive perfor

How many studies on L-Tyrosine are available?

NutriVouch references 273 human studies on L-Tyrosine, all peer-reviewed and indexed on PubMed.

Is L-Tyrosine effective for Stress Relief?

For Stress Relief, L-Tyrosine has an effectiveness score of 5/10 — moderate evidence — works in some populations. Based on 30 relevant studies.

Is L-Tyrosine effective for Cognitive Function?

For Cognitive Function, L-Tyrosine has an effectiveness score of 5/10 — moderate evidence — works in some populations. Based on 8 relevant studies.

Is L-Tyrosine effective for Depression Support?

For Depression Support, L-Tyrosine has an effectiveness score of 3/10 — weak or limited clinical evidence. Based on 16 relevant studies.

Is L-Tyrosine effective for Energy Levels?

For Energy Levels, L-Tyrosine has an effectiveness score of 3/10 — weak or limited clinical evidence. Based on 33 relevant studies.

Is L-Tyrosine effective for Muscle Recovery?

For Muscle Recovery, L-Tyrosine has an effectiveness score of 1/10 — minimal evidence — marketed but thinly supported. Based on 3 relevant studies.

Confidence level

Moderate evidence

273 studies

L-Tyrosine

Absorption

✦Best absorbed on an empty stomach, ideally 30 minutes before meals. Avoid taking with other amino acids or protein-rich foods to prevent competition for absorption.

Daily Dose

⚖

Common dose: 500–2,000 mg daily

RDA: No official RDA established

Upper limit: Not established

Best form: L-Tyrosine

Timing: On an empty stomach or between meals for better absorption

L-Tyrosine supplementation may support cognitive function during stress. Consult a healthcare provider if you have a thyroid condition or are taking medications that affect dopamine levels.

Effects

Food Sources

Parmesan cheese559mg per 28g
Lean beef500mg per 100g
Soybeans550mg per 100g
Chicken breast490mg per 100g
Eggs250mg per 100g