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Bismuth subsalicylateOver the counter
Pronounced BIZ-muth sub-sah-LIS-i-late
Brand names: Pepto-Bismol
Type: Antidiarrheal and stomach remedy · All Digestive (GI) Medicines
What Bismuth subsalicylate is used for
- Diarrhea and traveler's diarrhea
- Upset stomach and indigestion
- Part of stomach ulcer (H. pylori) treatment
◆ Kidney note
Salicylates build up more easily in kidney impairment — frequent use should be discussed with the care team.
Common side effects
- Black tongue and black stools (harmless)
- Constipation
- Ringing in the ears at high amounts
Important cautions
- It is a salicylate like aspirin — it must not be given to children or teenagers recovering from viral infections because of Reye syndrome risk
- Can interfere with several medicines, including blood thinners and some antibiotics
How it comes
Liquid, chewable tablets, tablets. This guide lists forms only — it never lists strengths or doses.
Related medicines — Digestive (GI) Medicines
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.