Used to relieve symptoms of seasonal allergies such as sneezing, runny nose, itchy or watery eyes, and itching of the nose or throat. It is a non-drowsy antihistamine that works by blocking histamine, a substance in the body that causes allergic reactions. Also used to treat itching and redness caused by chronic urticaria (hives) in adults and children. Does not cause significant drowsiness compared to older antihistamines, making it suitable for daytime use. Available in tablet, capsule, and liquid form for oral administration.