The function and efficacy of the extract of Melaleuca Tower: Pharmacological effects 1. Anti-cholinesterase effect: Huperzine A is a highly selective anti-cholinesterase inhibitor that can significantly promote cholinergic transmission at the neuromuscular junction. 2. The effect on neuromuscular: alkaloids have a significant relaxation effect on the isolated diaphragm of rats; on the rat sciatic nerve specimens of tibialis anterior muscle, it is proved that cedarine A can strengthen the muscle contraction. 3. Enhance learning and memory and improve memory barriers: Huperzine A can significantly prevent short-term recognition barriers caused by carbon dioxide, promote memory retention and reappearance; it can improve memory impairment caused by natural aging or scopolamine in rats. Clinical efficacy Melaleuca Taxin, Ping, fever, dehumidification, blood stasis, hemostasis. Treatment of pneumonia, pulmonary carbuncle, vomiting blood from injury, hemorrhoids, bloody stools, leucorrhea, bruises, swelling and poison. It is also used for the treatment of poisonous snake bites, burns, etc. Huperzine A was used early to treat myasthenia gravis. Recent pharmacological studies have shown that huperzine A is a good drug for the treatment of senile dementia (senile memory impairment).