Bismuth (Bi) is a chemical element with the atomic number 83. Bismuth supplements usually contain bismuth in a salt form, such as bismuth subsalicylate.

Bismuth salts seem to help eliminate bacteria that cause stomach problems such as diarrhea and stomach ulcers. Bismuth salts also work like an antacid to treat problems such as indigestion. Bismuth might also speed up blood clotting.

People commonly use bismuth for travelers' diarrhea, a digestive tract infection that can lead to ulcers (Helicobacter pylori or H. pylori), and stomach ulcers. It is also used for constipation, bleeding, and many other conditions, but there is no good scientific evidence to support these other uses.

Bismuth supplements are available in many different salt forms. Bismuth nitrate is a specific form that is not legal for use in dietary supplements. Review the listing on bismuth nitrate for more details.

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