Pranlukast is primarily used as a leukotriene receptor antagonist to manage and prevent symptoms of asthma. It works by blocking the action of leukotrienes, which are chemicals in the body that cause inflammation, bronchoconstriction, and mucus production in the airways. This makes it effective in reducing the frequency and severity of asthma attacks, particularly in patients with mild to moderate persistent asthma. It is often prescribed as a long-term control medication, helping to improve lung function and decrease the need for rescue inhalers. Additionally, Pranlukast is sometimes used in the treatment of allergic rhinitis, as it can alleviate nasal congestion, sneezing, and other allergy-related symptoms by targeting the underlying inflammatory response. Its oral administration provides a convenient option for patients who require consistent management of chronic respiratory conditions.