5 doctors weighed in:
My stool is brown+black on some days I take iron?
5 doctors weighed in

Dr. Jason Hemming
Internal Medicine - Gastroenterology
2 doctors agree
In brief: Normal.
Iron can cause stools to be black.

In brief: Normal.
Iron can cause stools to be black.
Dr. Jason Hemming
Dr. Jason Hemming
Thank
Dr. Charles Cattano
Internal Medicine - Gastroenterology
2 doctors agree
In brief: Black stools w/ iron
Dark-colored stools may result from iron supplements, foods you eat (like a lot of spinach), substances (like peptobismol), but most significantly suggests bleeding.
When blood is denatured by acid in your stomach, as from ulcers, stools will turn tarry ("melena"). Blood may also be ingested from nose bleeds, bleeding gums... Persistent melena (without obvious cause) & symptoms warrants md visit.

In brief: Black stools w/ iron
Dark-colored stools may result from iron supplements, foods you eat (like a lot of spinach), substances (like peptobismol), but most significantly suggests bleeding.
When blood is denatured by acid in your stomach, as from ulcers, stools will turn tarry ("melena"). Blood may also be ingested from nose bleeds, bleeding gums... Persistent melena (without obvious cause) & symptoms warrants md visit.
Dr. Charles Cattano
Dr. Charles Cattano
Thank
Get help from a real doctor now
Dr. Andrea Brand
Board Certified,
6M people helped
Continue
108,000 doctors available
Read more answers from doctors