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The Efficacy of Two Triple Therapy Regimens and One Quadruple Regimen [Omeprazole, Amoxicillin, Metronidazole with Bismuth] in Eradicating Helicobacter pylori in Patients with Peptic Ulcer: A Randomized Clinical Trial

Salehi AM, Ebrahimi A, Hasanzarrini M, Khanlarzadeh E, Bahrami A

Reviews on recent clinical trials, 2025

136 participants · 1 citation

Abstract

BACKGROUND

Helicobacter pylori [H. pylori] infection is the main cause of most PUD; therefore, the eradication of H. pylori is extremely important in the treatment of PUD. There are several recommended treatment regimens suggested to eradicate this organism.

AIM

This study compared the efficacy of three anti-Helicobacter pylori regimens in patients with dyspepsia or peptic ulcer disease [PUD].

OBJECTIVE

The objective of this study was to assess the efficacy of three anti-H Pylori treatments in patients based on C14 urease breath test [C-UBT] results, drug compliance, and adverse effects.

METHODS

This randomized, open-label clinical trial included 136 H. Pylori-infected patients without prior treatment. Patients were randomly divided into three groups. The OAC group received 20 mg Omeprazole capsules twice a day, two 500 mg Amoxicillin capsules twice a day, and 500 mg Clarithromycin capsules twice a day for 14 days. The OAL group received 20 mg Omeprazole capsules twice a day, two 500 mg Amoxicillin capsules twice a day, and Levofloxacin 500 mg capsules twice a day for 14 days. The OAMB group received 20 mg Omeprazole capsules twice a day, two 500 mg Amoxicillin capsules twice a day, Metronidazole 500mg three times a day, and Bismuth 240 mg twice a day for 14 days. Evaluation for compliance and drug-related adverse effects were assessed at the end of two weeks. H. Pylori eradication was evaluated eight weeks after treatment using the C-UBT.

RESULTS

A total of 136 patients…

How strong is the evidence?

Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 136 participants or records.

How the five levels of evidence work. The level is assigned automatically from the abstract and can be wrong, so check the paper.

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