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Perennial Allergic Rhinitis
Cetirizine hydrochloride syrup is indicated for the relief of symptoms associated with perennial allergic rhinitis due to allergens such as dust mites, animal dander and molds in children 6 to 23 months of age. Symptoms treated effectively include sneezing, rhinorrhea, postnasal discharge, nasal pruritus, ocular pruritus, and tearing.
Chronic Urticaria
Cetirizine hydrochloride syrup is indicated for the treatment of the uncomplicated skin manifestations of chronic idiopathic urticaria in children 6 months to 5 years of age. It significantly reduces the occurrence, severity, and duration of hives and significantly reduces pruritus.
Cetirizine hydrochloride is an orally active and selective H1-receptor antagonist. The chemical name is (±) – [2- [4- [(4- chlorophenyl)phenylmethyl] -1- piperazinyl] ethoxy]acetic acid, dihydrochloride. Cetirizine hydrochloride is a racemic compound with an empirical formula of C21H25ClN2O3 •2HCl. The molecular weight is 461.82 and the chemical structure is shown below:

Cetirizine dihydrochloride is a white or almost white powder and is freely soluble in water, practically insoluble in acetone and in methylene chloride. Cetirizine hydrochloride syrup is a colorless to slightly yellow syrup containing cetirizine hydrochloride at a concentration of 1 mg/mL (5 mg/5 mL) for oral administration. The pH is between 4 and 5. The inactive ingredients of the syrup are: banana flavor, glacial acetic acid, grape flavor, glycerin, methylparaben, propylene glycol, propylparaben, sodium acetate, sucrose and purified water.