NCIt definition : The hydrobromide salt form of scopolamine, a tropane alkaloid derived from plants
of the nightshade family (Solanaceae), specifically Hyoscyamus niger and Atropa belladonna,
with anticholinergic, antiemetic and antivertigo properties. Structurally similar
to acetylcholine, scopolamine antagonizes acetylcholine activity mediated by muscarinic
receptors located on structures innervated by postganglionic cholinergic nerves as
well as on smooth muscles that respond to acetylcholine but lack cholinergic innervation.
The agent is used to cause mydriasis, cycloplegia, to control the secretion of saliva
and gastric acid, to slow gut motility, and prevent vomiting.;