3 doctors weighed in:

Is black diarrhea normal when sick?

3 doctors weighed in
Dr. Joel Gallant
Internal Medicine - Infectious Disease
2 doctors agree

In brief: Not normal

Truly black diarrhea is never normal.
Black, tarry, smelly stools can be caused by gastrointestinal bleeding. Other things that can make stool look black include iron supplements and pepto bismol, (bismuth subsalicylate) which some people take for diarrhea. If you think you might be bleeding, you should go to an emergency room.

In brief: Not normal

Truly black diarrhea is never normal.
Black, tarry, smelly stools can be caused by gastrointestinal bleeding. Other things that can make stool look black include iron supplements and pepto bismol, (bismuth subsalicylate) which some people take for diarrhea. If you think you might be bleeding, you should go to an emergency room.
Dr. Joel Gallant
Dr. Joel Gallant
Thank
Get help from a real doctor now
Dr. Adam Smith
Board Certified, Internal Medicine
14 years in practice
392K people helped
Continue
111,000 doctors available
Read more answers from doctors