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 ...

A person’s poop may be black due to eating certain foods, such as licorice, taking iron supplements, or gastrointestinal bleeding. If people have blood in the stool, they may benefit from ...

Normal poop color is light to dark brown, but stool comes in different colors ... in the upper GI tract (e.g., stomach) - Taking iron supplements, activated charcoal, or drugs that contain ...