... 1ppmMercury (Hg)NegativePesticide Residual≤ 10ppbHuperzine A's Function & Application: 1.Huperzine-A is a plant alkaloid derived from the Chinese club ... moss plant, Huperzia serrata, which is a member of the Lycopodium species. In China, huperzine extract has been ... currently available for individuals with Alzheimer's, Huperzine A, temporarily blocks an enzyme known as acetylcholinesterase, which ...