Open Question: My Doctor prescribed Kapidex for acid reflux, before starting it i had had a problem with diarrhea, where I co?

I have acid reflux and was prescribed Kapidex, before starting Kapidex I had gone to the Dr. for a routine exam and stated that I was having trouble with diarrhea and sometimes donot have time to make it to the bathroom. Since I've started taking kapidex the symptoms are worse, strong stomach cramps and an immediate rush to the bathroom. My Doctor said when I first mentioned it to him before