Hydroxyzine is a piperazine derivative that is an H1 receptor antagonist. It is used primarily as an antihistamine for the treatment of itches and irritations, an antiemetic for the reduction of nausea, as a weak analgesic and as an anxiolytic for the treatment of anxiety.[1] The drug is available in two formulations, the hydroxyzine pamoate and the hydroxyzine hydrochloride salts.

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