A member asked:

Is black watery stool a result of taking pepto bismol (bismuth subsalicylate)?

6 doctors weighed in across 2 answers

Probably. : Pepto bismol (bismuth subsalicylate) can cause dark or black stool. This is caused by the bismuth in pepto bismol (bismuth subsalicylate).

Answered 10/2/2016

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Yes: Pepto bismol (bismuth subsalicylate) is a common cause of black stools. Other common causes include iron intake and an upper GI bleed (stomach, small bowel).

Answered 7/22/2019

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