Lasma 10 Tablet contains Montelukast 10 mg, a leukotriene receptor antagonist indicated for the prevention and chronic treatment of asthma and for the relief of symptoms associated with allergic rhinitis. Montelukast works by selectively blocking leukotriene D4 receptors in the airway, thereby reducing bronchoconstriction, inflammation, and mucus production. This mechanism helps improve airflow and decrease the frequency and severity of asthma attacks. Lasma 10 is commonly prescribed as a once-daily oral medication for patients aged 15 years and older to manage persistent asthma and to prevent exercise-induced bronchoconstriction. Additionally, it is effective in alleviating nasal congestion, sneezing, and rhinorrhea associated with seasonal and perennial allergic rhinitis. The tablet should be taken orally with or without food, preferably in the evening for optimal control of symptoms. Montelukast is generally well tolerated; however, some patients may experience adverse effects such as headache, abdominal pain, or neuropsychiatric events including mood changes or sleep disturbances. It is important to use Lasma 10 as part of a comprehensive asthma management plan and not as a rescue medication for acute bronchospasm. Patients should consult their healthcare provider for appropriate dosing and monitoring.