Digestive enzymes break it down in the digestive tract, changing its color and texture to black. Iron supplements, Pepto-Bismol, and certain dark foods can cause black stool, but this isn’t true ...

Normal poop color is light to dark brown, but stool comes in different colors. You might occasionally notice your bowel movements are green, yellow, black, orange, tan, and white. It isn't unusual ...

Gallbladder disease can change the color of stool. Treatments for gallbladder problems depend on the cause. A doctor may have to remove gallstones, either surgically or with medication to dissolve ...

All shades of brown-colored stool are normal. If a person’s stool is red or black, or other changes remain longer than 2 weeks or come with other symptoms, they should consult a doctor.