Depends: Most commonly, you had too much coffee or red wine. But it can also be a sign of internal bleeding. So if the stool is still dark, you need to get checked.
Answered 7/30/2013
5.2k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
6 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question