Discover the top causes of black poop like diet, supplements, and gut health conditions, plus the best treatment options ...

Medically reviewed by Kumkum S. Patel, MD Black poop, or melena, can happen when there is bleeding in the upper digestive ...

An ulcer is an open sore on the inside of your stomach or small intestine. Sometimes these sores bleed, which can make your poop dark. You get peptic ulcers when digestive acids damage the lining ...

Your stool may become greenish or even orange as a result. 5. Iron Supplements Iron supplements are notoriously difficult on the stomach. Possible side effects include high doses of diarrhea ...

If an ulcer forms in a person’s stomach, this can cause bleeding which may make the stool black and tarry. If a doctor thinks that medications are causing stomach ulcers, treatment may involve ...