e721eb9d_el_Movements_____What_It_Means__What_You_Should_Do
[Stool Color] Black or Dark Green [Cause] Iron. Or, it could also mean that your stomach or GI tract is bleeding. Pepto Bismol can also turn stools black due to the ingredient "bismuth subsalicylate". [Food That Produces Color] Iron pills, liver, meats, dark vegetables such as spinach or kale, broccoli, black licorice, black olives [What You Should Do] 
Usually clears up on its own once you re-balance your diet. See a doctor if it continues because it could mean your stomach is bleeding
The Color of Your Bowel Movements --- What It Means
What You Should Do