毒扁豆鹼
Physostigmine \Phy`so*stig"mine\, n. (Chem.) An alkaloid found in the Calabar bean (the seed of {Physostigma venenosum}), and extracted as a white, tasteless, substance, amorphous or crystalline; -- formerly called {eserine}, with which it was regarded as identical.
physostigmine n : used in treatment of Alzheimer's disease and glaucoma