Red Wine Cause Black Stool Can Red Wine Cause Dark Stool?

Can red wine cause dark stool? - red wine cause black stool

Yesterday I had about 2 glasses of red wine. Normally, white wines, but attempts to red. Today I had black stools / diareah I also had a salad of the day, I never had in a while. This could be the cause? Or should I worry I may have a bleeding ulcer?