Performance
L-Tyrosine (Performance)
Also known as: L-Tyrosine
B
Evidence
Dopamine precursor for focus and stress resilience during exercise.
Primary uses
- Focus
- Stress resilience
- Cognitive performance
How it works
- Precursor to dopamine, norepinephrine
- Supports catecholamines under stress
- Enhances focus
Dosage
- Typical range
- 500-2000mg
- Timing
- 30-60 min pre-workout
- With food
- Empty stomach preferred
- Duration
- Use during demanding periods
- Special populations
- Demanding training, sleep deprivation
Forms
- Powder
- Capsule
Safety
Common side effects
- Headache
- GI upset
- Anxiety
Contraindications
- Hyperthyroidism
- MAOIs
Evidence notes
Good evidence for stress and cognitive performance
Grade B: Some human trials support key claims; further confirmation needed.
Related in Performance
Check a full stack
Formulate's free interaction checker lets you paste in any combination of supplements and medications at once — every pairing flags severity, timing, and cited evidence.
Open the checkerMedical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.