What Is Bismuth Subcitrate/Metronidazole/Tetracycline? Uses, Dosage, and What You Need to Know in 2026

Updated:

March 28, 2026

Author:

Peter Daggett

Summarize this blog with AI:

What is Pylera (Bismuth Subcitrate/Metronidazole/Tetracycline)? Learn about its uses, dosage, how to take it, cost, and everything you need to know in 2026.

Bismuth Subcitrate/Metronidazole/Tetracycline Is a 3-in-1 Antibiotic Capsule Used to Treat H. Pylori Infections

Bismuth Subcitrate/Metronidazole/Tetracycline is a combination prescription medication — sold under the brand name Pylera — that contains three active ingredients in a single capsule to treat Helicobacter pylori (H. pylori) stomach infections. It's taken with Omeprazole (Prilosec) as part of a 10-day treatment regimen.

If you've been prescribed Pylera or are researching H. pylori treatments, this guide covers everything you need to know: what it is, what it's used for, how to take it, who should avoid it, and how much it costs.

What Is Bismuth Subcitrate/Metronidazole/Tetracycline?

Brand and Generic Names

Pylera is the only brand name for this combination. Each capsule is a 3-in-1 formulation containing:

  • Bismuth Subcitrate Potassium — 140mg
  • Metronidazole — 125mg
  • Tetracycline Hydrochloride — 125mg

There is no true generic version of the combination capsule, though the individual ingredients are available separately as generics.

Drug Class

Pylera belongs to the H. pylori eradication agents drug class. It combines a bismuth salt with two antibiotics (a nitroimidazole and a tetracycline) to attack H. pylori bacteria through multiple mechanisms simultaneously.

Manufacturer

Pylera is manufactured by Allergan, now part of AbbVie.

FDA Approval

Pylera was approved by the FDA for the eradication of H. pylori in patients with active or a history of duodenal ulcer disease. It must be used in combination with Omeprazole 20mg.

Controlled Substance Status

Pylera is not a controlled substance. It does not have abuse potential and is not scheduled by the DEA.

What Is It Used For?

Pylera is FDA-approved for one specific use:

Eradication of Helicobacter pylori infection in patients with active duodenal ulcers or a history of duodenal ulcers within the past 5 years.

H. pylori is a type of bacteria that lives in the stomach lining. It's estimated to infect about 35–40% of the U.S. population, though many people never develop symptoms. When H. pylori does cause problems, it can lead to:

  • Peptic ulcers (stomach and duodenal ulcers)
  • Chronic gastritis (stomach inflammation)
  • Increased risk of stomach cancer (long-term)
  • Dyspepsia (indigestion and upper abdominal discomfort)

Treating and eradicating H. pylori has been shown to significantly reduce the risk of ulcer recurrence.

How Is Bismuth Subcitrate/Metronidazole/Tetracycline Taken?

Standard Dosing

The typical regimen is:

  • Pylera: 3 capsules, 4 times daily (after breakfast, after lunch, after dinner, and at bedtime)
  • Omeprazole 20mg: Twice daily (after breakfast and after dinner)
  • Duration: 10 days

That's 12 Pylera capsules per day — which adds up to a daily total of:

  • Bismuth Subcitrate Potassium: 1,680mg
  • Metronidazole: 1,500mg
  • Tetracycline: 1,500mg

How to Take It Correctly

  • Take after meals — Each dose should follow a meal (except the bedtime dose)
  • Drink a full glass of water (8 oz) with each dose — especially the bedtime dose, to prevent esophageal irritation from Tetracycline
  • Swallow capsules whole — Don't crush, chew, or open them
  • Avoid dairy products at the same time as your dose — milk, cheese, and yogurt reduce Tetracycline absorption
  • Avoid antacids, iron supplements, and multivitamins within 2 hours of your dose
  • No alcohol during treatment and for 3 days after your last dose

What If You Miss a Dose?

Take it as soon as you remember, unless it's almost time for your next dose. Don't double up. If you miss more than 4 doses, call your doctor for guidance.

Who Should Not Take Bismuth Subcitrate/Metronidazole/Tetracycline?

Pylera is not safe for everyone. Do not take it if you:

  • Are pregnant — Tetracycline is Pregnancy Category D (causes permanent tooth discoloration and bone growth issues in the fetus)
  • Are breastfeeding — Both Metronidazole and Tetracycline pass into breast milk
  • Are under 18 years old — Not approved for pediatric use
  • Have severe kidney disease
  • Are allergic to bismuth, Metronidazole, Tetracycline, or any nitroimidazole or tetracycline-class antibiotics
  • Drink alcohol daily or regularly consume products containing propylene glycol
  • Have taken Disulfiram (Antabuse) within the past 14 days
  • Use Methoxyflurane

Tell your doctor if you have liver disease, Cockayne syndrome, blood disorders, or any active infections before starting Pylera.

How Much Does Bismuth Subcitrate/Metronidazole/Tetracycline Cost?

Pylera is a brand-name medication with no generic equivalent, so it can be expensive:

  • Average retail price: ~$399 for 120 capsules (one 10-day course)
  • With GoodRx coupon: As low as ~$197
  • With SingleCare coupon: As low as ~$189
  • With insurance: Copays vary; typically Tier 3 on most formularies

If cost is a concern, you have several options:

  • Use a prescription discount card or coupon
  • Ask your doctor about separate-component bismuth quadruple therapy, which uses generic versions of the same ingredients and may cost less
  • Check if AbbVie offers a manufacturer savings program
  • Look into patient assistance programs if you're uninsured or underinsured

Don't forget to budget for Omeprazole as well, though it's available OTC for under $10.

How Effective Is Pylera?

In clinical studies, Pylera plus Omeprazole achieved H. pylori eradication rates of approximately 87–93% — comparable to or better than traditional bismuth quadruple therapy using separate pills. The 3-in-1 capsule format simplifies what would otherwise be a complex multi-pill regimen.

For more on how Pylera works in your body, see our guide on how Pylera's mechanism of action works.

What Are the Side Effects?

Common side effects include nausea, dark stools, metallic taste, diarrhea, headache, and abdominal pain. Serious side effects are rare but include seizures, peripheral neuropathy, and severe allergic reactions. Read our detailed guide on Pylera side effects.

Final Thoughts

Bismuth Subcitrate/Metronidazole/Tetracycline (Pylera) is a proven, FDA-approved treatment for H. pylori infections associated with duodenal ulcers. While the dosing schedule is demanding (12 capsules a day for 10 days), the 3-in-1 format is actually simpler than the alternative of taking each ingredient separately. Combined with Omeprazole, it offers eradication rates above 90%.

If you've been prescribed Pylera, the keys to success are: take every dose after meals, avoid alcohol and dairy, drink plenty of water, and complete the full 10-day course. If you're having trouble finding it at your pharmacy, Medfinder can help you locate a pharmacy with stock near you.

Is there a generic version of Pylera?

No. There is no generic equivalent of the Pylera 3-in-1 combination capsule. However, doctors can prescribe the three ingredients separately as individual generics (Bismuth Subsalicylate, Metronidazole, and Tetracycline), which may be more affordable and easier to find.

How many pills do I have to take per day with Pylera?

You take 3 Pylera capsules four times a day (12 capsules total) plus Omeprazole 20mg twice a day (2 tablets). That's 14 pills per day for 10 days. It sounds like a lot, but the 3-in-1 capsule actually reduces the pill count compared to taking each ingredient separately.

Can I take Pylera with milk or dairy products?

No. Dairy products like milk, cheese, and yogurt interfere with Tetracycline absorption, making the medication less effective. Avoid dairy within 2 hours of taking your Pylera dose. You should also avoid antacids, iron supplements, and calcium at the same time.

What happens if I stop taking Pylera early?

Stopping Pylera before completing the full 10-day course increases the risk of treatment failure and antibiotic-resistant H. pylori. Even if you feel better, continue taking all doses as prescribed. If side effects are severe, talk to your doctor before stopping — don't just quit on your own.

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