Expired medications should not be taken. If you accidentally take expired Enteritonin, it is important to observe changes in abdominal pain. This is because any drug that has expired may have side effects or side reactions. If too much of the drug is taken, it may cause liver function damage or lead to kidney function damage, etc. Patients may develop fever, jaundice, reduced urine, yellow urine, or even blood in the urine. In addition, expired medications may cause gastrointestinal dysfunction, and patients may experience increased abdominal pain, increased frequency of stools, etc. If the patient does not have any symptoms, eats very little medication, and drinks more water and has more bowel movements, it is usually not a big deal. If the patient eats more expired medication, he or she needs to go to the hospital and have his or her stomach pumped if necessary.