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Pepto Bismol is used to treat diarrhea and indigestion. Its active ingredient (bismuth subsalicylate) can cause your stool to turn black or gray. This side effect is harmless and temporary ...
She now covers breaking and trending news for CBS News' HealthWatch. The active ingredient in Pepto Bismol, bismuth subsalicylate, is often used to treat and prevent diarrhea while traveling ...