Montelukast sodium chewable tablet is a very common clinical drug, mainly for children, such as 2-14 years old children’s allergic rhinitis, allergic asthma and other allergic diseases, have a very good effect, if the patient has hives allergic dermatitis can also apply this drug to reduce the symptoms of itchy skin. The drug can be used to effectively reduce the patient’s allergic reactions. Patients are advised to drink more water after using the drug to promote the absorption and metabolism of the drug, and there may be some drowsiness after using the drug, so it is recommended to take it before bedtime.