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Hydroxyzine

(Science: chemical) a histamine h1 receptor antagonist that is effective in the treatment of chronic urticaria, dermatitis, and histamine-mediated pruritus. Unlike its major metabolite cetirizine, it does cause drowsiness. It is also effective as an antiemetic, for relief of anxiety and tension, and as a sedative.

Pharmacological action: anti-anxiety agents, antiemetics, antipruritics, histamine h1 antagonists, sedatives, nonbarbiturate.

chemical name: ethanol, 2-(2-(4-((4-chlorophenyl)phenylmethyl)-1-piperazinyl)ethoxy)-