Learn about Allegra (Fexofenadine) at Medsmingle.com. This antihistamine relieves symptoms of seasonal allergies, hay fever, and chronic idiopathic urticaria by blocking histamine. It treats runny nose, sneezing, itchy eyes, and hives without causing sedation. Discover its uses, dosage, and potential side effects. Join now to get comprehensive information and manage your allergies effectively.