A 39-year-old member asked:
what is a common cause for black stool?
1 doctor answer
Dr. Eric Kaplan answered
41 years experience Colon and Rectal Surgery
Variable: But most concerning is a bleeding site in the upper GI tract which turns black when exposed to gastric acids. This can progress very rapidly to a very serious and life threatening situation. Non serious causes can be any meds containing bismuth such as pepto bismol (bismuth subsalicylate) and certain foods. You should see your doctor promptly for evaluation and referral if indicated.
Answered on Nov 2, 2016
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