Mechanism of Action: Montelukast is a leukotriene antagonist. It works by blocking the action of leukotriene, a chemical messenger. This reduces inflammation in the airways and nose, and improves symptoms of allergies. Acebrophylline is a mucolytic which thins and loosens mucus (phlegm), making it easier to cough out.
Fexofenadine is an antihistaminic medication. It treats allergy symptoms such as itching, swelling and rashes by blocking the effects of a chemical messenger (histamine) in the body.