Airfast Pediatrics contains montelukast, a leukotriene receptor antagonist that helps prevent asthma symptoms and exercise-induced bronchoconstriction in children. It works by blocking substances that cause inflammation and narrowing of the airways. Suitable for children aged 2 to 5 years. Also used for seasonal allergies and long-term hives. . Please Note that product description, color, ingredients, package and other information maybe different from the original pack kindly check the product for more accurate details.