TIL that the main ingredient of Pepto Bismol, Bismuth Subsalicylate, was first used not only to prevent life threatening diarrhea from Cholera, but as a surface disinfectant because of its bactericidal properties. The medicine kills bacteria colonizing the intestinal mucosa that cause stomach upset.

Read more: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4615802/

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