Used to treat symptoms of allergic conditions such as seasonal hay fever (allergic rhinitis) and chronic hives (urticaria). It helps relieve sneezing, runny nose, itchy or watery eyes, and itching of the nose or throat. Also effective in reducing skin itching and rashes caused by allergic reactions. Works by blocking histamine, a substance in the body that causes allergic symptoms. Known for fast action and long-lasting relief, typically taken once daily. Preferred for its minimal drowsiness compared to older antihistamines.