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Focus

Huperzine A

Huperzine A is an acetylcholinesterase inhibitor with safety data but weak pre-workout efficacy evidence.

How it counts: Counts toward Focus, not the grade

Scored against its clinical dose in the Focus sub-score (and any award that uses it), but it doesn’t move the overall grade.

Clinical dose
50–200 mcg
Safety ceiling
400 mcg
Evidence
weak
Category
Focus

Evidence summary

Research confidence: low

Phase Ib trial in healthy elderly adults dosed 100/200/300/400 mcg twice daily per week-long step, producing 30-40% RBC-AChE inhibition at 100 mcg rising to >50% at 400 mcg; well tolerated through 400 mcg BID.

Research sources

Dosed at or above clinical in

Other ingredients