Improves Memory, Focus and Concentration* Pro-Memorzine is a powerful new standardized extract of the Chinese club moss Huperzia serrata containing >99% of (-) Huperzine A, a natural compound which safely and effectively improves memory, focus and concentration. Pro-Memorzine is a reversible acetylcholinesterase inhibitor that prevents the breakdown of acetylcholine, an important neurotransmitter essential for normal learning and memory function. Importantly, studies show Pro-Memorzine does not contain impurities or potential toxins present in crude extracts of club moss sold as Huperzine A. Pro-Memorzine is pure and very specific in its action, thus minimizing potential side effects.