I get bouts of severe stomach issues from time to time. My doctor has tried upping my zoloft , and we have tried zantac , prilosec , etc. I get diarhea, heart burn , upper stomach pain and rancid burping and passing of gas. It s hard to function for a few days when this happens and I can t find any relief and the taste of my burps is so rancid it makes me sick to my stomach.