1. Noun. A particular sedative antihistamine drug. ¹
¹ Source: wiktionary.com
Medical Definition of Clemastine
1. Histamine h1 antagonist used as the hydrogen fumarate in hay fever, rhinitis, allergic skin conditions, and pruritus. It causes drowsiness.
Pharmacological action: anti-allergic agents, antipruritics, histamine h1 antagonists.
Chemical name: Pyrrolidine, 2-(2-(1-(4-chlorophenyl)-1-phenylethoxy)ethyl)-1-methyl-, (R-(R*,R*))-
(12 Dec 1998)
