Levocetirizine + Montelukast are two medications that work together to treat runny nose and sneezing brought on by allergies.
An antiallergen, levocetirizine, blocks the chemical messenger (histamine) that causes runny nose, watery eyes, and sneezing. A leukotriene antagonist, montelukast. It functions by obstructing leukotriene, another chemical messenger. This alleviates symptoms by reducing inflammation (swelling) in the airways and nose.