Question: how to tell the difference between a stomach ulcer and acid reflux?
Answer: Treating GERD and Stomach Ulcers In GERD, acid in the esophagus is the problem, whereas with an ulcer, acid is causing a problem in the stom- ach lining. So, the medication used to treat them is the same, an acid reducer (e.g. Pepcid, Zantac and Prilosec).