proof.fit

L-Tyrosine

11 benefits mapped to clinical evidence across supplements.

Benefit Evidence

Cognition +14.4kg

Motor time -1.9h

Tyrosine depletion impairs

5,492 people

Attention/memory +

Sleepiness/cognition −

2,096 people
Alertness
Strong

Alertness ↑; cognition

Tyrosine depletion ↓ alertness

2,041 people
Learning
Strong

Learning ↑, depletion ↓

Dopamine precursor shifts

+38% variance, improved learning

1,211 people

Alertness + fatigue

Cognition + vigilance

1,795 people

Tyrosine boosts attention

and working memory

+38 ms reaction time

1,004 people

Catecholamine depletion: stress↓ resilience

Tyrosine/L-DOPA: stress↑ resilience

+16% vasoconstriction

803 people
Memory
Moderate

Memory improved; +38%

Memory impaired; -79%

724 people
Mood balance
Moderate

Mood↓; anhedonia↑ AMPT

Mood↑; anxiety↓ L-dopa

801 people

Motivation↓, cognition↓

Reward response↓, vigilance↓

Prolactin↑, dopamine↓

448 people

Cognition + strength

Exercise capacity -75% Tyr

170 people

Similar by evidence

Supplements the same benefits carry qualifying findings for — a fact about the evidence graph, not a recommendation to swap.

Products with L-Tyrosine

Search all

167 products whose verified label declares L-Tyrosine — not every bottle that mentions it in a title.

Being studied right now

Recruiting clinical trials registered on ClinicalTrials.gov. A trial in progress has no result yet — this is what the field is asking, not what it found.