Allegra-M Tablet is used in treatment or management of Allergic rhinitis. Learn more about its uses, side effects, dosage, composition, price and order it online from PharmEasy with fast delivery and extra discount. Allegra-M Tablet is a combination medicine consisting of Montelukast and Fexofenadine. It is used to treat year-round symptoms of allergic rhinitis such as runny nose, watery eyes, sneezing, itching, etc. Allegra-M Tablet stops the activity of the chemical substance that causes allergic symptoms. Allegra-M Tablet shows some common side effects like drowsiness, dizziness, rash, weakness, headache, etc. Consult your doctor if these symptoms persist for a long time. Avoid using this medicine if ... Know everything about Allegra M Tablet including its uses, benefits, dosage, and side effects. Compare prices and find affordable substitutes online at Zeelab Pharmacy.