clemastine

noun

clem·as·tine | \ ˈklem-ə-ˌstēn

How to pronounce clemastine (audio)

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Medical Definition of clemastine

: an antihistamine drug administered orally in the form of its fumarate C₂₁H₂₆ClNO·C₄H₄O₄ to relieve the symptoms of hay fever and the common cold … oral antihistamines, such as chlorpheniramine and clemastine, reduce sneezing and, to a lesser extent, rhinorrhea, probably because of their anticholinergic effects, but they are often associated with excess sedation.— Frederick G. Hayden, Scientific American Medicine Bulletin, March 1997

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