hyoscyamine
Pronunciation: hī′ō-sī′ă-mēn
Definition: An alkaloid found in hyoscyamus, belladonna, Duboisia, and stramonium; the levorotatory component of the racemic mixture atropine; used as an antispasmodic, analgesic, and sedative; hyoscyamine hydrobromide is used for the same purposes.
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Examples: glitazone, GI cocktail, etc.

