Sulukast is primarily used as a leukotriene receptor antagonist, making it effective in managing and treating asthma and allergic rhinitis. It works by blocking the action of leukotrienes, which are chemicals in the body that cause inflammation, bronchoconstriction, and mucus production.

In asthma management, it helps reduce the frequency and severity of asthma attacks, improving breathing and overall lung function. For allergic rhinitis, it alleviates symptoms such as nasal congestion, sneezing, and runny nose by reducing inflammation in the nasal passages.

Additionally, Sulukast may be used in certain cases of chronic obstructive pulmonary disease (COPD) to improve airflow and reduce exacerbations. Its anti-inflammatory properties make it a valuable option for long-term control of respiratory conditions, often prescribed alongside other medications for enhanced therapeutic effects.