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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Black Stool When Diagnosed With IBS?

Last night I drank half of a 64 OZ Bottle of grape juice and drank the other half this morning. I have had black stool today and was wondering if that was the cause of the black stool. I have IBS and have been in pain the last week as well but only had light colored stools until today.
Sat, 12 May 2018
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General & Family Physician 's  Response
Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.

IBS is a functional kind of disease that makes the person conscious of any symptom that is related to abdomen or defecation. Actually, the black stool is due to grape juice you drank, but IBS made you more conscious.

Hope I have answered your query. Let me know if I can assist you further.

Regards,
Dr. Akhtarhusain
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What Causes Black Stool When Diagnosed With IBS?

Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. IBS is a functional kind of disease that makes the person conscious of any symptom that is related to abdomen or defecation. Actually, the black stool is due to grape juice you drank, but IBS made you more conscious. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Akhtarhusain