Montelukast Sodium relieves airway hyperreactivity state and has some anti-allergic effects, which may provide relief for allergic cough, and should be used under the guidance of a physician. Allergic cough is mainly due to allergens (such as cold air, pollen, dust mites, etc.) to stimulate the airway inflammation, hyperreactive state, and induced cough. Montelukast sodium belongs to the leukotriene receptor antagonist, which can reduce the tracheal mucosal congestion, edema, inflammation and other pathological states, at the same time can alleviate the bronchial smooth muscle contraction caused by airway spasm, narrowing and so on; therefore, allergic cough can be taken to this kind of drug treatment. There are many medications available for the treatment of allergic cough, which should be selected under the guidance of a doctor in combination with the condition.