Overview Cetirizine is a second-generation antihistamine commonly used to relieve allergy symptoms. It is known for its non-drowsy formula and long-lasting effects. Available over the counter and by prescription, cetirizine is widely used for treating seasonal and perennial allergic rhinitis, urticaria, and other histamine-related conditions. What is Cetirizine? Cetirizine is an antihistamine that works by blocking histamine, a substance in the body that causes allergic symptoms. It is primarily used to treat hay fever, hives, and other allergic reactions. Cetirizine is available in tablet, liquid, and chewable forms. How It Works Cetirizine functions by inhibiting the action of histamine at…