Diabetic patients with acute and chronic diarrhea can take montelukast on medical advice. Montmorillonite powder can play a protective role in the mucous membrane of the digestive tract, can repair the damage of the mucous membrane barrier, to maintain the normal bacterial balance, clinically suitable for adults and children’s groups of acute and chronic diarrhea treatment. The drug is currently only prohibited for those who are allergic to the product, and diabetes is not a contraindication to the use of drugs, so diabetic patients who have acute and chronic diarrhea can take the drug. Note that the adverse reaction of mild constipation may occur during the use of the drug. The specific use of drugs about montelukast should be guided by a specialist, not unauthorized use of drugs.