Singulair (Montelukast) 10mg is a medication commonly prescribed to treat allergies and asthma. It works by blocking leukotrienes, which are chemicals in the body that cause inflammation, tightening of the airways, and increased mucus production, leading to symptoms like wheezing and difficulty breathing. Singulair is often prescribed for:Asthma: To help control asthma symptoms and prevent asthma attacks.Allergic Rhinitis: To relieve symptoms of hay fever, such as sneezing, runny nose, and itching.Exercise-induced Bronchoconstriction: To prevent breathing problems caused by physical activity.