PERFORMANCEMIXED
Alpha-GPC
Real acetylcholine precursor. Small power/output signal at real doses.
EFFECTIVE DOSE
300–600 mg, 45–60 min pre-training
HOW IT WORKS
Fast-crossing choline donor; raises acetylcholine availability.
WHAT THE EVIDENCE SUPPORTS
- Small acute power output benefit
- Possible focus/reaction-time signal
WHAT TO LOOK OUT FOR
- Pre-workouts often list 50–150 mg — well below the studied dose.
- Recent observational studies raised stroke-risk questions with chronic use — not conclusive.
SIDE EFFECTS
- Headache, GI upset
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.