Montelax-LC Tablet contains Montelukast and Levocetirizine. Montelukast blocks leukotrienes to reduce inflammation and swelling in the nose. Levocetirizine blocks histamine, which causes allergy symptoms. Together, they relieve allergic conditions like sneezing, itching, and congestion. This combination provides effective allergy symptom relief. However, this medication should only be taken if prescribed by a doctor.