I was told from a friend that her son has a problem with gallstones and the outcome is he has constant diarrhea and his Dr said no need to do anything unless it becomes problematic. Is this true because l live on kaopectate and sometimes have pain below in my stomach. Can someone help me? I have it EVERYDAY and l am a diabetic. Please help me someone. ## What medication do you take to control your diabetes? The FDA does warn that most of them may cause nausea, dizziness, headache, gas, and diarrhea as side effects. Thus, your problem might not be the same as what her son is experiencing.