There is no such thing as the fastest and most effective tips for diarrhea, the first thing you need to do to treat diarrhea is to identify the cause. For physiological causes of diarrhea, the general conditioning can be restored. For pathological causes of diarrhea, may need to give medication (such as norfloxacin, mesalazine), or even surgical treatment. 1. Physiological causes of diarrhea: mainly to adjust the life and diet. For example, regular diet, avoid overeating; reasonable diet structure, avoid stimulating food; regular work and rest, avoid staying up late. 2. Pathological causes of diarrhea: such as acute enteritis can be considered norfloxacin, levofloxacin and other drugs; such as ulcerative colitis can be considered mesalazine, salazosulfapyridine and other drugs; such as intestinal masses can be considered endoscopic resection or traditional surgery. If the diarrhea is more severe, oral antidiarrheal medications such as montelukast can be taken. For the treatment of diarrhea, it is recommended to consult a doctor to clarify the cause and give corresponding treatment.