Can montelukast relieve cough and expel phlegm?

Generally, montelukast sodium is a leukotriene receptor antagonist, available in various common formulations such as montelukast sodium tablets, orally disintegrating films, and chewable tablets. Whether montelukast sodium can relieve coughing and expel phlegm mainly depends on the underlying cause. For cough with sputum caused by asthma, montelukast sodium is usually appropriate; however, for cough with sputum due to viral infections such as the common cold or influenza, montelukast sodium is not recommended. If discomfort occurs, prompt medical consultation is advised. Specific analysis is as follows:

If the cough with phlegm is caused by asthma, montelukast can help reduce airway inflammation and lower airway hyperresponsiveness, thereby alleviating symptoms. Montelukast sodium primarily works by inhibiting leukotriene-mediated inflammatory responses, reducing respiratory inflammation and improving symptoms of asthma and allergic rhinitis.

If the cough is triggered by viral infections such as the common cold or influenza, montelukast has limited effectiveness, as the cough in these cases results directly from viral infection rather than leukotriene-mediated inflammation. In such situations, antitussives or expectorants may be needed to directly address the cough and mucus production.

When using montelukast, patients should strictly follow medical instructions and avoid adjusting the dosage or discontinuing the medication without guidance. If adverse reactions occur during treatment, patients should seek medical attention promptly and inform their doctor.