Hema Pharmaceuticals is involved in the manufacturing and supplying of Fexofenadine HCL. It is an antihistamine used to relieve allergy symptoms such as watery eyes, running nose, itching eyes/nose, sneezing, hives, etc. It works by blocking a certain natural substance called histamine that the body makes during an allergic reaction. It is the hydrochloride salt form of fexofenadine, which is a carboxylated metabolic derivative of terfenadine and 2nd generation, long-lasting selective histamine H1 receptor antagonist. It competitively binds peripheral H1-receptors in the gastrointestinal (GI) tract, blood vessels, and bronchial smooth muscle.