PERFORMANCEMIXED
L-Tyrosine
Only worth it under stress (heat, cold, sleep loss, cognitive load).
EFFECTIVE DOSE
100–150 mg/kg, 30–60 min pre-stressor
HOW IT WORKS
Precursor to dopamine/norepinephrine; helps maintain catecholamines under depletion.
WHAT THE EVIDENCE SUPPORTS
- Preserves cognitive performance under acute stress
WHAT TO LOOK OUT FOR
- Pre-workout doses (100–500 mg) are far under effective.
SIDE EFFECTS
- Well tolerated
SOURCES
Reviewed 11/1/2025 · Brawn Supplement Reviewer
Educational content. Not medical advice. Talk to a licensed professional before starting any supplement, especially if you take medications or have a medical condition.