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Point Pleasant, NJ
A 32-year-old female asked:

How do you know the difference between black stool from iron supplement or bleeding? normal brown stool before iron pills were started. should i worry

1 doctor answer6 doctors weighed in
Dr. Krishna Kumar
Psychiatry 57 years experience
Black stool causes: It is likely that your black stools are from Iron supplement because you had Normal brown stools before iron pills were started. Upper GI bleeding can have dark blood in stools. If you have history of Ulcer, abdominal pain, vomiting, or diarrhea, please see Gastroenterologist for Diagnosis and Treatment. Discuss need for iron supplement.
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Last updated Nov 4, 2017

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