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A member asked:
Black stool this morning. was not tarry, didnt disperse in the water. i poop an hour later, it was dark brown, not black. had pepto on wed. & thurs.
A doctor has provided 1 answer
Likely Pepto Bismol (bismuth subsalicylate): Pepto Bismol (bismuth subsalicylate) can cause a change in the color of stool and turn it black. As long as you are not otherwise noticing any significant associated symptoms like abdominal pain, change in bowel habits, this is not a worrisome concern.
Answered 7/23/2016
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