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Efficacy Comparison of 10-Day High-Dose Versus 14-Day Standard-Dose Vonoprazan Plus Amoxicillin in Helicobacter Pylori Eradication: A Multicenter Non-Inferiority Randomized Controlled Trial

Comparison of Eradication Efficacy Between 10-Day High-Dose Vonoprazan and 14-Day Standard-Dose Vonoprazan Combined With Amoxicillin for Helicobacter Pylori: A Multicenter, Non-Inferiority Randomized Controlled Trial

Status
Not yet recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07720037
Enrollment
232
Registered
2026-07-22
Start date
2026-07-30
Completion date
2028-05-30
Last updated
2026-07-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Amoxicillin, Helicobacter Infection, Vonoprazan

Brief summary

This is a multicenter non-inferiority randomized controlled trial for patients infected with Helicobacter pylori. Eligible participants will be randomly split into two groups. One group will take high-dose vonoprazan combined with amoxicillin (vonoprazan 20mg tid, amoxicillin 1000mg bid) for 10 days, while the other group will receive standard-dose vonoprazan plus amoxicillin (vonoprazan 20mg bid, amoxicillin 1000mg bid) for 14 days. The main goal of this study is to compare how well the two treatment plans clear the H. pylori bacteria. We aim to check if the 10-day high-dose treatment works no worse than the 14-day standard treatment. Every participant will take a follow-up test after treatment to see if the bacteria have been eliminated.

Interventions

DRUG10-day group

vonoprazan 20mg tid and amoxicillin 1000mg tid for 10 days

DRUG14-day group

vonoprazan 20mg bid and amoxicillin 1000mg tid for 14 days

Sponsors

Shandong University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

1. Aged 18 to 70 years, no restriction on gender 2. Current Helicobacter pylori infection (positive result of either ¹³C or ¹⁴C urea breath test) 3. No prior history of Helicobacter pylori eradication therapy

Exclusion criteria

1. Severe underlying diseases, including hepatic insufficiency, renal insufficiency, malignant tumors, etc. 2. Active gastrointestinal bleeding 3. History of upper gastrointestinal surgery 4. History of allergy to study medications 5. Use of bismuth agents or antibiotics within 4 weeks prior to enrollment; use of acid-suppressive agents within 2 weeks prior to enrollment 6. Pregnant or breastfeeding women, and subjects who refuse to take contraceptive measures during the trial 7. Behaviors that may increase disease risks, such as chronic alcohol abuse and drug addiction 8. Subjects who are unable or unwilling to sign the informed consent form

Design outcomes

Primary

MeasureTime frameDescription
Eradication ratesimmediately after the procedureBoth intention to treat (ITT) and per-protocol (PP) analyses will be used for the assessment of the eradication rates of Helicobacter pylori in two groups. The ITT analysis includes all randomly assigned patients who take at least one dose of the study medicines. The PP analysis is limited to patients who take over 90% of the study medications and complete follow-up.

Secondary

MeasureTime frameDescription
Rate of adverse reactionsimmediately after the procedure
Patient complianceimmediately after the procedureGood compliance is defined as the actual dosage is within the range of 80%-100% of the dosage that should be taken.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 23, 2026