Montelukast sodium is not a cough suppressant, it belongs to the leukotriene modulator, also belongs to the leukotriene receptor antagonist, mainly inhibits the airway leukotriene receptor, so as to reduce the leukotriene-induced inflammatory response of the airway, but also can relieve the spasmodic contraction of the bronchial tubes, there is a mild asthmatic effect. Montelukast sodium its main role is to reduce airway sensitivity, so it is no cough effect, usually need to cooperate with other drugs together to treat related cough diseases, such as cough variant asthma and cold and cough patients, because of such patients with increased airway sensitivity, through oral Montelukast sodium to reduce the airway non-specific inflammatory response, in conjunction with other cough medication symptomatic treatment, its cough to more effective control. Cough can be controlled more effectively. However, it is important to note that montelukast sodium should not be abused, as it also has certain side effects. Not all coughs should be treated with montelukast sodium, and the appropriate indications need to be grasped.