Montelukast Sodium Chewable Tablets have been shown to reduce symptoms of allergic rhinitis and improve inflammatory markers in asthma. In asthma, leukotriene-mediated effects include a series of airway responses such as bronchoconstriction, mucus secretion, and increased vascular permeability, and montelukast sodium inhibits the physiologic effects produced by leukotriene binding to its receptor, thereby relieving symptoms. In allergic rhinitis, the nasal mucosa releases leukotrienes associated with the symptoms of allergic rhinitis in both the immediate and delayed phases of allergen exposure, and montelukast sodium inhibits the physiological effects of leukotriene binding to its receptor, thereby relieving the symptoms. It is prohibited to use for those who are allergic to the ingredients of montelukast sodium and pregnant women. Common adverse reactions are diarrhea, indigestion, nausea, vomiting, dizziness, drowsiness, etc., which can disappear after stopping the drug. It is recommended to use Menglustre Sodium Chewable Tablets under the guidance of a doctor, blind use is risky.