Yohimbine (/joʊˈhɪmbiːn/)^[2] is an indole alkaloid derived from the bark of the Pausinystalia yohimbe tree in Central Africa. It is a veterinary drug used to reverse sedation in dogs and deer. Yohimbine has been studied as a potential treatment for erectile dysfunction but there is insufficient evidence to rate its effectiveness.^[3] Extracts from yohimbe have been marketed as dietary supplements for improving sexual function.^[4]

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