Ingredient

Bismuth Subnitrate

Bismuth subsalicylate is an ingredient in antip diarrhea medications that helps alleviate diarrhea and intestinal discomfort.

All medicines
46
Combination
46
OTC medication
46

MFDS ingredient code M223064

What does it do?

Bismuth subsalicylate is an ingredient used in the gastrointestinal system, primarily for the treatment of diarrhea. This ingredient protects the intestinal mucosa and helps stabilize the intestinal environment.

Bismuth subsalicylate forms a protective barrier on the intestinal mucosa to reduce irritation and inhibits the activity of harmful bacteria in the intestines, alleviating symptoms of diarrhea. It also helps reduce intestinal inflammation, normalizing intestinal function.

Approved uses differ by product. Check each product's information for its actual use.

Good to know

Bismuth subsalicylate has a strong protective effect on the intestinal mucosa compared to other antip diarrhea medications and has antibacterial effects, making it advantageous for complex diarrhea treatment. This distinguishes it from simple adsorbents or astringents.

Medicines containing this ingredient

Even with the same ingredient, strength, dosage form and how it is taken can differ.

Category
Dosage form
Strength
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46 total

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Even with the same ingredient, dosage and approved uses can differ by strength, dosage form and combined ingredients. Check each product's information before taking it.

Combined ingredients

Ingredients used together with this ingredient in combination products.

Questions about this ingredient

  • QWhat should I do if I take an antidiarrheal but diarrhea does not stop?

    The diarrhea treatment ingredients serve to alleviate symptoms, so their effectiveness can vary depending on the cause. If diarrhea persists for a long time or is accompanied by fever, severe abdominal pain, or bloody stools, it is better to seek medical attention to identify the cause rather than continuing to take medication.

    Answers 1 · 2026.09.14

  • QHow does bismuth subcitrate work for diarrhea?

    Bismuth subsalicylate forms a protective layer in the intestinal mucosa to reduce irritation and inhibits the activity of harmful bacteria in the intestines to alleviate diarrhea symptoms. It also helps reduce intestinal inflammation and normalize bowel function, functioning differently from adsorbents or astringents.

    Answers 1 · 2026.09.14

For anything that needs medical judgment, consult a doctor or pharmacist.

SourceKorea Ministry of Food and Drug Safety (Drug Safety Korea)

This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.