If you want to prevent diarrhea, you can take enteritisin, flavopiridol tablets, levofloxacin, etc. If people who usually have diarrhea often may have intestinal irritation syndrome, that is, intestinal dysfunction, patients suffering from this syndrome are prone to diarrhea when they are emotionally stressed, they can usually prepare montelukast for prevention, and do not need to eat if they do not have diarrhea. It is recommended that patients usually eat sour milk containing lactic acid bacteria and probiotics, which can not only regulate the intestinal flora, but also supplement nutrition. If there is no gastrointestinal disease people to prevent diarrhea, just pay attention to the usual diet hygiene, drink more warm water to replenish water, pay attention to rest, and develop good eating and living habits can be, do not need to take special drugs, but not good for the body.