The fastest solution for seniors with diarrhea is to take montelukast, but the follow-up needs to promptly identify the cause of diarrhea and treat it, as well as pay attention to dietary habits. When the elderly have diarrhea, the fastest and most effective way to take montelukast, the drug has a better protective effect on the mucosa of the gastrointestinal tract, inhibition and fixation of bacteria and viruses in the intestinal tract, to improve the protective effect of the mucous membrane against a variety of attack factors. The elderly can take the drug more safely. It should be noted that if the degree of diarrhea is more serious and the effect of taking montelukast is general, you need to go to the hospital gastroenterology timely consultation, find out the cause of the disease as soon as possible and carry out appropriate treatment.