It is recommended to drink Chinese medicine for 2-4 hours, after the medicine is absorbed and digested, then you can take Montelukast. Montelukast is generally recommended to be taken on an empty stomach to prevent the drug from adhering to the Chinese medicine and affecting the covering effect of Montelukast in the disease site, thus affecting the therapeutic effect. Usually, after taking Chinese medicine, the stomach will absorb relatively fast, and the fasting state can be reached in 2-4 hours. Montelukast is an antidiarrheal drug that can be used for acute and chronic diarrhea in adults and children. Montelukast has a strong fixing and inhibiting effect on viruses, germs and the toxins and gases they produce in the digestive tract; it has a strong covering and protecting ability on the mucous membrane of the digestive tract, and it can repair and improve the defense function of the mucous membrane barrier against the attacking factors. People who are allergic to Montelukast are forbidden to take it. Mild constipation may occur in a few people after taking Montelukast. If you need to use Montelukast, it is recommended to take under the guidance of a doctor, do not use on your own to avoid adverse effects.