What could cause a person to vomit bile?
It is preceded by an excess of stomach acid that causes vomiting and ends with the addition of the bitter yellow compound that I think to be bile. I can find nothing at the library to help answer this question. Response: Gastroesophageal reflux (GERD), peptic ulcer disease, or a “slow stomach” (gastroparesis) could cause a person to vomit up bile. Your question, however, cannot be answered completely without a complete history of your problem, a thorough physical examination, and a laboratory evaluation. We advise you to see your local doctor for a referral to a board-certified gastroenterologist or general surgeon. If you are seeking a second opinion, we suggest that your diagnosis is confirmed by experts at an institution experienced in identifying digestive disorders. Your local doctor might be able to make such a referral.