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Huperzine A

Half-life

~10-14 hours

What is Huperzine A?

AChE inhibitor from Chinese club moss. Prevents breakdown of acetylcholine. Very potent — cycle use.

How Huperzine A works

Reversible acetylcholinesterase inhibition increases synaptic acetylcholine and may enhance NMDA receptor signaling.

Benefits & uses

  • Boosts acetylcholine
  • Supports memory & recall
  • Learning support

Common uses: Memory, acetylcholine preservation, Alzheimer's support, focus.

Cognitive

Huperzine A dosage

Typical dose
50–200 mcg daily (cycle it — don't use continuously)

Huperzine A half-life

~10-14 hours

Huperzine A side effects

Nausea, vivid dreams. Must be cycled (2 weeks on/off) to prevent accumulation.

  • Nausea
  • Vivid dreams
  • Bradycardia/cholinergic excess at high dose
  • GI upset
  • Overstimulation/cholinergic effects at high doses

Warnings & monitoring

  • Potent — cycle rather than taking continuously; caution with cholinergic meds

Commonly stacked with

Alpha-GPC

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For research and educational purposes only. This page is not medical advice and is not a recommendation to use any compound. Many compounds listed are not approved for human use, and some are prescription-only or controlled in your jurisdiction. Dosing figures are reference or observational reports. Talk to a qualified healthcare provider before starting, stopping, or changing anything. Protokol is for tracking purposes only.