Home Healthcare Shoppe Q&AAnswer
Dec 01, 2025 - 08:43 AM
Cetirizine hydrochloride is the active ingredient in Reactine Allergy Extra Strength, a second-generation antihistamine that provides fast-acting, long-lasting 24-hour relief from common allergy symptoms such as sneezing, runny nose, itchy eyes, and nasal congestion, without causing significant drowsiness.
