If you’ve taken bismuth medication like Pepto Bismol, that can also make your stools look almost black. It’s always best to check with a doctor if you’re unsure. If you find blood in your ...

You ate dark foods. Dark foods like beets, blueberries, dark licorice, and even a lot of spinach can cause your poop to look black, Dr. Farhadi says. “Dark foods contain certain dyes which can ...