L-Tyrosine

Cognition +14.4kg

Motor time -1.9h

Tyrosine depletion impairs

Attention/memory +

Sleepiness/cognition −

Alertness ↑; cognition

Tyrosine depletion ↓ alertness

Learning ↑, depletion ↓

Dopamine precursor shifts

+38% variance, improved learning

Alertness + fatigue

Cognition + vigilance

Tyrosine boosts attention

and working memory

+38 ms reaction time

Catecholamine depletion: stress↓ resilience

Tyrosine/L-DOPA: stress↑ resilience

+16% vasoconstriction

Memory improved; +38%

Memory impaired; -79%

Mood↓; anhedonia↑ AMPT

Mood↑; anxiety↓ L-dopa

Motivation↓, cognition↓

Reward response↓, vigilance↓

Prolactin↑, dopamine↓

Cognition + strength

Exercise capacity -75% Tyr