A member asked:

I am on multivitamin tablet once daily. i noticed my poop is half black and half brown. no any other symptoms.

A doctor has provided 1 answer
Dr. Heidi Fowler answered

Specializes in Psychiatry

Iron can: sometimes cause dark stool. Does you multiple vitamin contain iron? If black, mushy/ tarry and malodorous - get checked for blood in stool.

Answered 11/28/2017

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