it's the pepto. it happens to me every time i take it and if you read all the warnings on the package it even says you may notice a change in your stool color. nothing to be too alarmed by but if you're still taking the pepto try laying off for a day or two and see if that helps.
what would cause discoloration of your stool specifically a black color? . on november 15th i experienced virus like symptoms. i was having headaches body aches and i also had diarrhea. on november 17th i began taking pepto bismol and imodium. i could hear gas like noises in my stomach. the diarrhea stopped and i didn't have a bowel movement until nov 19th. every movement since then has had a black color. what could cause this black color? .