Cetirizine Hydrochloride

Cetirizine Hydrochloride

Cetirizine hydrochloride is an antihistamine used to relieve allergy symptoms such as itching, runny nose, and hives. It works by blocking histamine, a substance in the body that causes allergic reactions. Cetirizine hydrochloride is available over-the-counter and by prescription, depending on the dosage.