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cetirizine/ce·ti·ri·zine/ (sĕ-tir´ĭ-zēn) a nonsedating antihistamine used as the hydrochloride salt in the treatment of allergic rhinitis, chronic idiopathic urticaria, and asthma.
A nonsedating antihistamine, C21H25ClN2O3, used in the form of its hydrochloride to treat allergic rhinitis and other allergic disorders.
an H1-histamine antagonist.
indications It is used to treat allergy symptoms and rhinitis.
contraindications Known hypersensitivity to this drug, lactation, and severe hepatic disease prohibit its use. It also should not be used in newborns or premature infants.
adverse effects Life-threatening effects include hemolytic anemia, thrombocytopenia, leukopenia, agranulocytosis, pancytopenia, and dysrhythmias (rare). Other serious adverse effects include urinary retention, impotence, diarrhea, vomiting, sedation, confusion, blurred vision, tremors, hypotension, palpitations, bradycardia, and tachycardia. Common side effects are thickening of bronchial secretions, nausea, drowsiness, and headache.
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.