Introduction

Huperzia serrata ( Qian Ceng Ta/Jin Bu Huan) is a plant known as a firmoss which contains the acetylcholinesterase inhibitor huperzine A. It is widely distributed over-the-counter as a nootropic and dietary supplement.

This species is native to China, India and southeast Asia.

Huperzine A is a reversible acetylcholinesterase inhibitor and NMDA receptor antagonist that crosses the blood-brain barrier. A 2013 meta-analysis found that huperzine A may be efficacious in improving cognitive function, global clinical status, and activities of daily living for individuals with Alzheimer's disease.

Huperzine A is also marketed as a dietary supplement with claims made for its ability to improve memory and mental function. Huperzine A may also have a possible role in the treatment of myasthenia gravis.

Function
1. Huperzine-A can help repair short-term memory damage and enhance brain power in the long run, and reduce the aging degree of annoyance.
2. Huperzine-A helps focus and improves memory.
3. Huperzine-A Protect the neurotransmitter acetylcholine, an information transmitter molecule in and around the nervous system
4. Huperzine-A Protect the number, size and function of choline neurons.

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