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A nonsedating antihistamine, C21H25ClN2O3, used in the form of its hydrochloride to treat allergic rhinitis and other allergic disorders.
cetirizineZyrtec® Therapeutics A potent, antiinflammatory H1-receptor antagonist used for respiratory allergies; it has little CNS reactivity or cardiotoxicity and doesn't interact with other medicines. See Antihistamine.
cetirizineAn ANTIHISTAMINE drug used in the treatment of hay fever and other allergic conditions. A brand name is Zirtek Allergy.
Any substance that reduces the effect of histamine or blocks histamine receptors, usually the histamine 1 (H1) receptor. It is used in the treatment of allergic conjunctivitis and also in the temporary relief of minor allergic symptoms of the eye. Common agents include antazoline sulfate, azelastine hydrochloride, cetirizine, chlorphenamine, emedastine, epinastine hydrochloride, ketotifen, levocabastine, loratadine and olopatadine. See hypersensitivity; mast cell stabilizers.