Origin of muscarine
German Muskarin, from New Latin (Amanita) muscaria fly agaric
First Known Use: 1872
Medical Definition of muscarine
: a toxic ammonium base [C9H20NO2]+ that is biochemically related to acetylcholine, was originally extracted from fly agaric but also occurs in other mushrooms (as of the genus Inocybe), and when ingested produces symptoms of parasympathetic nervous system stimulation (as excessive salivation, lacrimation, bronchial secretion, diarrhea, miosis, and bradycardia)
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