A member asked:

Can zantac affect stool? stool appeared dark, but i wouldn't say black or tarry.

A doctor has provided 1 answer
Dr. Euton Laing answered

Specializes in Family Medicine

Usually not : Zantac usually does not affect the color of stool. It may cause slightly looser stools. If you are taking Zantac for problems with stomach and you are having dark stools need to checked by a gastroenterology doctor yo rule out an ulcer

Answered 7/25/2017

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