🦠microbiology review

Bismuth subsalicylate

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Bismuth subsalicylate is a medication commonly used to treat temporary discomforts of the stomach and gastrointestinal tract, such as diarrhea, heartburn, and nausea. It has antimicrobial properties that make it useful in managing certain bacterial infections.

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5 Must Know Facts For Your Next Test

  1. Bismuth subsalicylate can inhibit the growth of specific bacteria that cause gastrointestinal infections.
  2. It acts as an antacid, reducing stomach acid and soothing irritation.
  3. The medication is often used for treating Helicobacter pylori infections when combined with antibiotics.
  4. Common side effects include a temporary darkening of the stool and tongue.
  5. Bismuth subsalicylate should not be used by individuals who are allergic to salicylates (like aspirin) or have certain medical conditions like severe kidney disease.

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