Huperzine A

Huperzine A acts as a cholinesterase inhibitor — a group of medications that work by improving the levels of neurotransmitters in the brain. Small early studies suggest that huperzine A may improve memory and protect nerve cells, which could slow the cognitive decline associated with Alzheimer's.

Does it work?

Huperzine A acts as a cholinesterase inhibitor — a group of medications that work by improving the levels of neurotransmitters in the brain. Small early studies suggest that huperzine A may improve memory and protect nerve cells, which could slow the cognitive decline associated with Alzheimer's [1]. More studies are needed, however, to determine possible benefits and long-term risks of huperzine A.

Dangers and possible side effects...

For now, most doctors don't recommend taking huperzine A because approved cholinesterase inhibitor medications are available that have been tested for safety and effectiveness. It is recommended that you not take huperzine A if you're already taking a prescribed cholinesterase inhibitor, such as donepezil (Aricept), rivastigmine (Exelon) or galantamine (Reminyl). Taking both could cause side effects, such as nausea, vomiting, diarrhoea [2], dizziness [3] and muscle cramps [4].

References:

1. Natural Standard- The Authority on Integrative Medicines