The use of Montelukast for cough is based on the reduction of airway hyperresponsiveness, which facilitates the improvement of cough symptoms. Montelukast, which is mainly used for the treatment of aspirin-sensitive asthma and the prevention of exercise-induced bronchoconstriction, is also indicated for the reduction of cough due to allergic causes. Montelukast belongs to the leukotriene receptor inhibitors, which can alleviate a series of airway hyperresponsiveness symptoms such as cough, shortness of breath and other discomforts due to airway mucosal congestion, edema, inflammation caused by airway constriction, stenosis, mucus secretion and so on, through the pharmacological effect of Montelukast, and then make the cough symptom get effective improvement and control. However, it should be noted that it should not be used in the treatment of acute asthma attacks, and it is contraindicated for those who are allergic to any of the ingredients in this product. It is recommended to use the drug under the guidance of a doctor according to the condition, do not take it on your own. Please consult the hospital in time to avoid delaying the condition.