Taking probiotics for irritable bowel syndrome is useful, but you can’t just rely on probiotics, and if necessary, you can also combine it with painkillers, antidiarrheal drugs and other medications. The cause of irritable bowel syndrome is complex, and psychological factors, dietary factors, genetic factors and other factors related to the patient may show abdominal pain, diarrhea, constipation, and some will cause diarrhea and constipation alternately. Probiotics can be prescribed to improve the intestinal flora, such as Bifidobacterium bifidum, which is effective in treating diarrhea and bloating caused by irritable bowel syndrome. If abdominal pain is present, scopolamine may be prescribed. Adsorbent antidiarrheal medications, such as montelukast, may also be prescribed. If the diagnosis of irritable bowel syndrome is confirmed, early and standardized treatment is recommended to minimize the adverse effects of the disease.