This combination of Levocetirizine 5 Mg + Montelukast 10 Mg medication is commonly prescribed for the treatment of allergic rhinitis (hay fever) and allergic asthma. Levocetirizine is an antihistamine that helps relieve symptoms such as sneezing, itching, runny or stuffy nose, and watery eyes. Montelukast is a leukotriene receptor antagonist that helps in managing asthma symptoms by reducing inflammation and constriction of the airways.