Compound library / Cognitive / Nootropic

Huperzine A

Acetylcholinesterase inhibitor derived from Huperzia serrata moss; explored for memory enhancement and Alzheimer's disease. Works by preventing breakdown of acetylcholine, similar mechanism to prescription cholinesterase inhibitors like donepezil.

CategoryCognitive / Nootropic
Typical routeOral
Half-life~10-14 hours
Common dose range50-200 mcg/day (not mg — mcg; dosing is very low)
Typical cycle lengthCycle on 2 weeks / off 2 weeks to avoid acetylcholinesterase downregulation

BioHack Track models Huperzine A at a half-life of 12 hours, so every dose you log is decayed against that curve and the app shows what is still circulating — not just what you typed.

Reconstitution

Oral capsule; no reconstitution needed.

Storage

Store at room temperature.

Cautions

Even at supplement doses, acts as a drug on the cholinergic system — nausea, cramping, and bradycardia possible at excessive doses. Do not combine with other cholinesterase inhibitors (prescription or OTC).

Track Huperzine A in BioHack Track. Half-life, dose range and route come pre-filled from this library — log a dose and the app counts your vial down, models what is in your system, and puts it on the same chart as your labs and body composition.

Others in Cognitive / Nootropic

Look up the research

These open a search of each database for Huperzine A — they are not citations, and nothing here is evidence for any particular dose. The same links are in the app.

Work it out