Auro Health, Cetirizine Hydrochloride, 500 TabsProduct Description Cetirizine Hydrochloride is an antihistamine that helps alleviate allergy symptoms such as sneezing, runny nose, itchy or watery eyes, and itching of the throat or nose. It works by blocking the action of histamine, a substance in the body that causes allergic symptoms. This product is suitable for adults and children, providing relief from seasonal allergies and hay fever. Product Benefits Effective Relief From Allergy Symptoms.