Taking gastrointestinal tablets has been diarrhea may be eaten spoiled drugs or drugs itself stimulation, acute gastroenteritis, gastrointestinal dysfunction and other factors caused. 1. Eating spoiled drugs or the drug itself stimulation: diarrhea symptoms after the use of drugs may be caused by taking expired drugs, should stop eating spoiled drugs, replace the unexpired drugs. In addition, the drug itself may also stimulate gastrointestinal motility, resulting in diarrhea. 2. Acute gastroenteritis: the gastrointestinal tract is affected by bacteria, viruses, parasites and other infectious or non-infectious factors, diarrhea, abdominal pain and other symptoms, you should take levofloxacin and other medications to treat the cause of the diarrhea should be supplemented intravenously with a balance of fluids to prevent electrolyte imbalance. 3. Gastrointestinal dysfunction: gastrointestinal dysfunction can have indigestion symptoms, such as bloating, diarrhea, etc., so at this time the patient can take probiotics and other drugs for treatment. If you have diarrhea after taking gastrointestinal tablets, it is recommended that you go to the hospital and ask the doctor to make a judgment.