BlackA vitamin that contains iron or medication that contains bismuth subsalicylate, such as Pepto-Bismol, can cause this, but black stools can also signal a more serious problem. [6] “Dark, black stools could be caused by bleeding in the stomach, a duodenal ulcer, or a tumor,” says Dr...
Learn what can cause upper stomach pain and what remedies can help relieve symptoms. IBS-D (Irritable Bowel Syndrome with Diarrhea) IBS-D or irritable bowel syndrome with diarrhea refers to IBS with diarrhea. Symptoms of IBS-D include intestinal gas (flatulence), loose stools, frequent stools,...