Pepto-Bismol treats both upset stomach and diarrhea, but Tums does not. Pepto-Bismol is not safe for pregnant or breastfeeding women, while Tums is safe. Tums is available in multiple strengths and ...
Pepto-Bismol starts working in 30 to 60 minutes. It is safe for short-term use but can cause a black tongue or black stool. Do not use Pepto-Bismol for more than two days. It takes 30 to 60 minutes ...