About Vismut
Bismuth subsalicylate, sold generically as pink bismuth and under brand names including Pepto-Bismol, Pepti-Calm, and BisBacter, is a medication used to treat temporary discomfort of the stomach and gastrointestinal tract. This includes an upset stomach, heartburn, or other similar symptoms.
Bismuth subsalicylate has the empirical chemical formula C7H5BiO4 and is obtained by reacting bismuth(III) oxide (Bi2O3) and salicylic acid (HOC6H4COOH). Most liquid formulations of bismuth subsalicylate are suspensions and therefore must be shaken before use.
