Bismuth metronidazole tetracycline?

They’re the three antibiotic components of a standard H. pylori eradication regimen known as bismuth quadruple therapy (usually with a proton pump inhibitor too).

What it’s for:
- Treats Helicobacter pylori infection to help heal ulcers and reduce gastritis risk.

What’s usually included:
- Bismuth (often bismuth subsalicylate or bismuth subcitrate)
- Metronidazole
- Tetracycline
- A proton pump inhibitor (PPI) such as omeprazole or lansoprazole

Typical regimens (examples):
- Traditional four-drug plan: PPI twice daily + bismuth + metronidazole + tetracycline for about 10–14 days.
- Alternatively, a single-pill product called Pylera (contains bismuth, metronidazole, and tetracycline) taken with a PPI for about 10 days.

Important safety notes:
- Metronidazole: avoid alcohol during treatment and for 48 hours after; can cause GI upset or a metallic taste.
- Tetracycline: can cause sun sensitivity; not for use in pregnancy or in children under ~8 years.
- Bismuth: can darken stools and tongue; usually well tolerated but can cause constipation or GI upset.
- This is prescription therapy; dosing and duration vary by country and patient factors.

If you’re asking about a specific regimen, dosing, side effects, or whether it’s right for you, tell me your location and any medical conditions or medications, and I can tailor the info.