The following are possible manifestations of montelukast sodium chewable tablets: 1. Gastrointestinal reactions, patients may experience nausea, vomiting, diarrhea, abdominal distension, abdominal pain, and even gastrointestinal bleeding and perforation, which are sometimes seen clinically. 2. Symptoms of the mental system, including excitement, depression, anxiety, mania, and other abnormal manifestations of the mental system. 3. The drug can be used to treat the symptoms of the nervous system, including dizziness, drowsiness, abnormal sensations, and even seizures. 4. Montelukast sodium chewable tablets have a lot of adverse effects on the patient’s body. Clinically, if this performance occurs, you should go to the local hospital as soon as possible and give active treatment.