scopolamine

DEFINITION: (noun) A thick, syrupy, colorless alkaloid, C17H21NO4, extracted from plants such as henbane and used primarily as a mydriatic and sedative, and to treat nausea and prevent motion sickness.
SYNONYMS: hyoscine.
USAGE: At the conclusion of the surgical procedure, the doctor applied a transdermal scopolamine patch to the patient to prevent postoperative nausea.

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scopolamine