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From Biology-Online Dictionary | Biology-Online Dictionary
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(Science: chemical) histamine h1 antagonist used in allergic rhinitis, asthma, and urticaria. It may cause drowsiness.

Pharmacological action: anti-allergic agents, histamine h1 antagonists.

Chemical name: Pyridine, 2-(1-(4-methylphenyl)-3-(1-pyrrolidinyl)-1-propenyl)-, (E)-