You can’t drink coffee during diarrhea. Coffee is a common drink, which is rich in caffeine and fatty acids, so drinking coffee properly can invigorate the spirit and relieve fatigue. But when the body is in diarrhea, the human intestinal tract will be in a state of hyperactivity, then drink drinks containing caffeine, it will lead to an increase in intestinal hyperactivity, not only for diarrhea does not improve the effect, but also aggravate the condition. Coffee can stimulate excessive secretion of gastric acid, which has an irritating effect on the intestinal mucosa and therefore leads to hyperactive peristalsis, so drinking coffee during diarrhea is not conducive to the treatment of the condition. Some people have allergic reactions to coffee, and after drinking coffee, the intestinal system will have a stress reaction, and diarrhea symptoms will be more serious as a result. When you have diarrhea, in addition to not drinking coffee, you should not eat greasy, spicy or irritating food. You can eat liquid or semi-liquid food, such as rice porridge and noodles, etc. If necessary, you can use montelukast and enteritis for anti-diarrheal treatment.