Hyoscyamus niger, commonly known as henbane, black henbane or stinking nightshade, is a poisonous plant in the family Solanaceae.
Henbane originated in Eurasia, and is now globally distributed as a plant grown mainly for pharmaceutical purposes. Henbane is rare in northern Europe; its cultivation for medicinal use is spread and legal in central and eastern Europe and in India. Henbane is an endangered plant according to the World Conservation Union’s Red List.
The main active constituents of henbane are hyoscyamine (main ingredient), scopolamine and atropine, all highly toxic tropane alkaloids.
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