HELICOBACTER PYLORI INFECTIONSNCT07574983
Levofloxacin-Based Sequential Therapy Versus Bismuth Quadruple Therapy for Helicobacter Pylori Eradication
A study testing Levofloxacin-Based Sequential Therapy and Bismuth-Based Quadruple Therapy in people with HELICOBACTER PYLORI INFECTIONS, run by University of Health Sciences Lahore.
Trial summary
This randomized controlled trial aims to compare the efficacy and safety of levofloxacin-based sequential therapy versus bismuth-based quadruple therapy for eradication of Helicobacter pylori infection in adult patients. Read more about this study
- Who is it for?
- Ages 20 years and older
- Conditions the study is for
- HELICOBACTER PYLORI INFECTIONS
- What is being tested?
- Levofloxacin-Based Sequential Therapy and Bismuth-Based Quadruple Therapy
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 90 participants
- Where
- No sites listed yet
- Study dates
- 1 Jun 2026to 30 Dec 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adults aged 20 years and older
- Confirmed Helicobacter pylori infection by stool antigen testing
- Willingness to comply with the assigned treatment regimen
- Ability to provide informed consent
- Willingness to complete follow-up evaluation
Who cannot join
- Use of antibiotics within 4 weeks prior to enrollment
- Active gastrointestinal infection other than Helicobacter pylori
- Previous gastrointestinal tract surgery
- Pregnant or lactating females
- Known allergy or intolerance to study medications
- Psychiatric illness or other condition impairing treatment compliance
- Severe comorbid illness making participation unsuitable in the investigator's judgment
Trial locations and contacts
No sites are listed yet. Contact the study team or a site near you to ask about taking part.
About this study
Official title: Levofloxacin-Based Sequential Therapy Compared With Bismuth-Based Quadruple Therapy for Eradication of Helicobacter Pylori Infection: A Randomized Controlled Trial
This randomized controlled trial aims to compare the efficacy and safety of levofloxacin-based sequential therapy versus bismuth-based quadruple therapy for eradication of Helicobacter pylori infection in adult patients. Helicobacter pylori infection remains highly prevalent in developing countries and is associated with gastritis, peptic ulcer disease, mucosa-associated lymphoid tissue lymphoma, and gastric cancer. Increasing antibiotic resistance has reduced the effectiveness of conventional treatment regimens, creating a need for alternative first-line therapies with improved eradication rates and acceptable tolerability.
Eligible adult patients diagnosed with H. pylori infection by stool antigen testing will be recruited from the Gastroenterology Department of Services Hospital Lahore. Participants will be randomly assigned in a 1:1 ratio to receive either levofloxacin-based sequential therapy or bismuth-based quadruple therapy for 14 days.
Read more
The primary outcome of the study is successful eradication of H. pylori infection, confirmed by stool antigen testing performed 6 weeks after completion of therapy. Secondary outcomes include treatment-related adverse effects, treatment compliance, and overall treatment cost.
The study aims to identify an effective and affordable treatment strategy for H. pylori eradication in a population with high antibiotic resistance and socioeconomic limitations.
- Conditions
- HELICOBACTER PYLORI INFECTIONS
- Being tested
- Levofloxacin-Based Sequential Therapy, Bismuth-Based Quadruple Therapy
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Levofloxacin-Based Sequential TherapyOther
Participants will receive a 14-day levofloxacin-based sequential therapy regimen. During days 1-7, participants will receive dexlansoprazole 60 mg twice daily and amoxicillin 1 g twice daily. During days 8-14, participants will receive dexlansoprazole 60 mg twice daily, levofloxacin 500 mg once daily, and tinidazole 500 mg twice daily.
Bismuth-Based Quadruple TherapyOther
Participants will receive a 14-day bismuth-based quadruple therapy regimen consisting of bismuth subsalicylate 265 mg (two tablets) twice daily, dexlansoprazole 60 mg twice daily, doxycycline 100 mg twice daily, and tinidazole 500 mg twice daily.
| Study group | Role | What they receive |
|---|---|---|
| Levofloxacin-Based Sequential Therapy | Experimental | Participants assigned to this arm will receive levofloxacin-based sequential therapy for 14 days. During days 1-7, participants will receive dexlansoprazole 60 mg twice daily and amoxicillin 1 g twice daily. During days 8-14, participants will receive dexlansoprazole 60 mg twice daily, levofloxacin 500 mg once daily, and tinidazole 500 mg twice daily. Receives: Other: Levofloxacin-Based Sequential Therapy |
| Bismuth-Based Quadruple Therapy | Active comparator | Participants assigned to this arm will receive bismuth-based quadruple therapy for 14 days, consisting of bismuth subsalicylate 265 mg (two tablets) twice daily, dexlansoprazole 60 mg twice daily, doxycycline (Vibramycin) 100 mg twice daily, and tinidazole 500 mg twice daily. Receives: Other: Bismuth-Based Quadruple Therapy |
What is being measured
The primary outcome is the main question the study is designed to answer.
Helicobacter pylori Eradication Rate
Measured: 6 weeks after completion of therapy
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 May 2026
- Study start1 Jun 2026 (estimated)
- Primary completion1 Oct 2026 (estimated)
- Study completion30 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HELICOBACTER PYLORI INFECTIONSStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 90 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Health Sciences Lahore
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Tanveer Abbas, University of Health Sciences Lahore
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07574983
- Sponsor's protocol ID
- 156
- Status last verified
- May 2026
- First submitted
- 2 May 2026
- Last updated
- 8 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 8 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Levofloxacin-Based Sequential Therapy Compared With Bismuth-Based Quadruple Therapy for Eradication of Helicobacter Pylori Infection: A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT07574983
- Acronym / sponsor ID
- 156
- Conditions
- HELICOBACTER PYLORI INFECTIONS
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 90 participants (estimated)
- Lead sponsor
- University of Health Sciences LahoreUniversity, hospital or other
- Study start
- 1 Jun 2026 (estimated)
- Primary completion
- 1 Oct 2026 (estimated)
- Study completion
- 30 Dec 2026 (estimated)
- First posted
- 8 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This randomized controlled trial aims to compare the efficacy and safety of levofloxacin-based sequential therapy versus bismuth-based quadruple therapy for eradication of Helicobacter pylori infection in adult patients. Helicobacter pylori infection remains highly prevalent in developing countries and is associated with gastritis, peptic ulcer disease, mucosa-associated lymphoid tissue lymphoma, and gastric cancer. Increasing antibiotic resistance has reduced the effectiveness of conventional treatment regimens, creating a need for alternative first-line therapies with improved eradication rates and acceptable tolerability.
Eligible adult patients diagnosed with H. pylori infection by stool antigen testing will be recruited from the Gastroenterology Department of Services Hospital Lahore. Participants will be randomly assigned in a 1:1 ratio to receive either levofloxacin-based sequential therapy or bismuth-based quadruple therapy for 14 days.
The primary outcome of the study is successful eradication of H. pylori infection, confirmed by stool antigen testing performed 6 weeks after completion of therapy. Secondary outcomes include treatment-related adverse effects, treatment compliance, and overall treatment cost.
The study aims to identify an effective and affordable treatment strategy for H. pylori eradication in a population with high antibiotic resistance and socioeconomic limitations.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Levofloxacin-Based Sequential Therapy | Experimental | Other: Levofloxacin-Based Sequential TherapyParticipants assigned to this arm will receive levofloxacin-based sequential therapy for 14 days. During days 1-7, participants will receive dexlansoprazole 60 mg twice daily and amoxicillin 1 g twice daily. During days 8-14, participants will receive dexlansoprazole 60 mg twice daily, levofloxacin 500 mg once daily, and tinidazole 500 mg twice daily. |
| Bismuth-Based Quadruple Therapy | Active comparator | Other: Bismuth-Based Quadruple TherapyParticipants assigned to this arm will receive bismuth-based quadruple therapy for 14 days, consisting of bismuth subsalicylate 265 mg (two tablets) twice daily, dexlansoprazole 60 mg twice daily, doxycycline (Vibramycin) 100 mg twice daily, and tinidazole 500 mg twice daily. |
Who may qualify
- Ages
- 20 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Adults aged 20 years and older
- Confirmed Helicobacter pylori infection by stool antigen testing
- Willingness to comply with the assigned treatment regimen
- Ability to provide informed consent
- Willingness to complete follow-up evaluation
Key exclusion criteria (7 listed)
- Use of antibiotics within 4 weeks prior to enrollment
- Active gastrointestinal infection other than Helicobacter pylori
- Previous gastrointestinal tract surgery
- Pregnant or lactating females
- Known allergy or intolerance to study medications
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Levofloxacin-Based Sequential TherapyParticipants will receive a 14-day levofloxacin-based sequential therapy regimen. During days 1-7, participants will receive dexlansoprazole 60 mg twice daily and amoxicillin 1 g twice daily. During days 8-14, participants will receive dexlansoprazole 60 mg twice daily, levofloxacin 500 mg once daily, and tinidazole 500 mg twice daily. | Other | Levofloxacin-Based Sequential Therapy |
| Bismuth-Based Quadruple TherapyParticipants will receive a 14-day bismuth-based quadruple therapy regimen consisting of bismuth subsalicylate 265 mg (two tablets) twice daily, dexlansoprazole 60 mg twice daily, doxycycline 100 mg twice daily, and tinidazole 500 mg twice daily. | Other | Bismuth-Based Quadruple Therapy |
Primary outcome
Helicobacter pylori Eradication Rate
Time frame: 6 weeks after completion of therapy
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 May 2026.
- Individual participant dataSharing planned: Undecided
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Efficacy and Safety of Second-Line Helicobacter Pylori Eradication
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Questions about this trial
What is this clinical trial studying?
A study testing Levofloxacin-Based Sequential Therapy and Bismuth-Based Quadruple Therapy in people with HELICOBACTER PYLORI INFECTIONS, run by University of Health Sciences Lahore.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 8 May 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Tanveer Principal Investigator (030708693386, tenu9428@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Helicobacter pylori Eradication Rate (time frame: 6 weeks after completion of therapy). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 May 2026.