Montelukast Sodium Tablet has anti-inflammatory properties and when taken, it specifically inhibits cysteinyl leukotriene receptors in the airways, which improves inflammation in the airways and can reduce as well as control asthma symptoms. The drug is commonly used clinically for the prevention and prolonged treatment of asthma in patients 15 years of age and older, as well as for the prevention or reduction of daytime and nighttime physical symptoms of asthma. It is also used to treat patients with aspirin-sensitive asthma and to prevent exercise-induced bronchoconstriction. It can also reduce symptoms caused by seasonal or perennial allergic rhinitis in people 15 years of age and older. When taking the medication, it is important to follow the doctor’s instructions closely. Adverse reactions such as upper respiratory tract infections, allergic reactions, drowsiness and erythema nodosum may occur during the use of the drug. The drug is contraindicated in patients who are allergic to the components of the drug. If serious adverse reactions occur during administration, it is necessary to stop using the drug and go to the hospital for treatment. The efficacy of oral administration of the drug in the treatment of acute asthma attacks has not been established, so the drug can not be used for the treatment of acute asthma attacks. Please follow the doctor’s instructions for the use of medication.