Can Fish Oil Cause Green Poop?
Can Fish Oil Cause Green Poop? Vitamins, Supplements, and Drugs Taking iron supplements can change the color of your poop to dark green (or black). 1 Other vitamins, supplements, and teas that can cause green poop include: Senna, cascara sagrada, rhubarb, and fiber supplements. Why does my poop have a green tint? Food may be