About this trial
This is a randomized controlled trial comparing the efficacy and safety of two vonoprazan-based regimens: high-dose dual therapy (vonoprazan plus a single antibiotic) versus triple therapy (vonoprazan plus two antibiotics) for the treatment of H. pylori infection).
Participants will be randomly assigned to receive either regimen for 14 days. The primary outcome is eradication rate , and secondary outcomes include adverse events and treatment adherence.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age ≥ 18 years and ≤ 80 years (adjust upper limit as needed)
Confirmed Helicobacter pylori infection by at least one of the following: positive urea breath test, rapid urease test, histopathology, or stool antigen test
Treatment-naïve for H. pylori (no prior eradication therapy) - OR - prior treatment failure (specify if rescue therapy)
Willing and able to provide written informed consent
Disqualifiers
History of allergy or hypersensitivity to vonoprazan, amoxicillin, clarithromycin, metronidazole, or any other penicillin/cephalosporin
Previous H. pylori eradication therapy (if study is for first-line treatment)
Active gastrointestinal bleeding or perforation
Severe liver disease (Child-Pugh class B or C) or severe renal impairment (eGFR < 30 mL/min/1.73m²)
Trial design
Parallel
Treatments tested in this trial
Vonoprazan
DrugOral medications dispensed at enrollment in blinded (to outcome assessor) packaging. Patients complete a daily medication diary. Adherence assessed by pill count at day 14. No dose adjustments permitted during the 14-day treatment period.
Levofloxacin 500mg
DrugOral medications dispensed at enrollment in blinded (to outcome assessor) packaging. Patients complete a daily medication diary. Adherence assessed by pill count at day 14. No dose
Treatment groups
Trial outcomes
Primary outcomes
H. pylori Eradication Rate
Proportion of participants with negative H. pylori status confirmed by urea breath test (or stool antigen test) at least 4 weeks after completion of study treatment. Eradication is defined as a negative test result. Both intention-to-treat and per-protocol analyses will be performed.
Sponsors and contacts
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