FEXOLIN SYPFexolin Syrup is an antihistamine formulation that provides effective relief from allergies, sneezing, runny nose, watery eyes, and itching. Containing Fexofenadine Hydrochloride, a non drowsy antihistamine, it works by blocking the action of histamine the chemical responsible for allergic symptoms. Ideal for both seasonal and year round allergies, Fexolin Syrup offers fast, long lasting relief with a pleasant taste suitable for children and adults.