Huperzine A For Learning and Memory Huperzine A is a natural compound extracted from the Chinese club moss Huperzia serrata. Worldwide studies have shown that Huperzine A supports learning and memory by protecting acetylcholine, a neurotransmitter that acts as a messenger molecule in the brain. Huperzine A may be used for both short-term "brain boost" needs, such as preparing for a test, as well as more long-term needs, such as reducing the mild memory loss associated with normal aging.* 100 mcg Tablet Option Available: 60, 120 Suggested Use: 1 tablet 1 to 2 times daily. Allergies: Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservative, or artificial color, flavor or fragrance.