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Contact SupplierWe are leading manufacturer and exporter of pharmaceutical Fexofenadine, sold under the trade name Allegra among others is an antihistamine pharmaceutical drug used in the treatment of allergy symptoms, such as hay fever and urticaria. Therapeutically, fexofenadine is a selective peripheral H1-blocker.Fexofenadine is classified as a second-generation antihistamine because it is less able to pass the blood–brain barrierand cause sedation, compared to first-generation antihistamines. It has also been called a third-generation antihistamine, although there is some controversy associated with the use of the term.