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OR Bismuth subcitrate 420 mg four times daily, metronidazole 375 mg four times daily, tetracycline 375 mg four times daily ◊ , standard dose PPI* twice daily for 10-14 days Δ H. pylori : Helicobacter pylori ; PPI: proton pump inhibitor. * Lansoprazole 30 mg twice daily, omeprazole 20 mg twice daily, pantoprazole 40 mg twice daily, or rabeprazole 20 mg twice daily. • Eradication rates of 70 to 85 percent. Δ Eradication rates of 75 to 90 percent. ◊ A combination preparation of bismuth subcitrate-metronidazole-tetracycline is available in the United States (trade name Pylera). Table adapted from data published in: Chey WD, Wong BCY. American College of Gastroenterology Guideline on the Management of Helicobacter pylori Infection. Am J Gastroenterol 2007; 102:1808.