Apart from him accidentally ingesting something or having a big hair-ball/cancer or something else causing his discomfort..The best course for potential ulcers seems to be Pepcid wait 30 minutes.. carafate or Pepto bismal wait 10 minutes then gruel. Amoxi and Biaxin worked best for my kids that had ulcers. And it is a process. It's painstaking but it works.Again, barring there is nothing in the stomach that causes it. The biggest issue with ulcers is that if it's left alone it will perforate. Not to be gross but you'll know it. Their belly swells up and the nastiest poop you've ever seen come out. Please don't let it get to that point. Help him cross if the meds aren't working. It is very painful. Leanne [Posted in FML 7444]