Pepto-Bismol is used to treat diarrhea, travelers' diarrhea, nausea, heartburn, indigestion, gas, or upset stomach. Pepto-Bismol works as an antacid to reduce excess stomach acid and so eases discomfort. It also works to protect the stomach and lower part of your food pipe (esophagus) from stomach acid. Pepto-Bismol can be taken as a tablet or ... More @Wikipedia
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