Can probiotics make h. pylori antibiotics easier on the gut?
NCT ID NCT07827170
First seen Sep 18, 2026 · Last updated Sep 18, 2026
Summary
Researchers test whether Bacillus probiotics, given alongside standard four-drug antibiotics for H. pylori infection, reduce gut side effects and improve treatment tolerance. The trial enrolls 336 adults with H. pylori who receive either a single-strain probiotic, a multi-strain probiotic, or a placebo during 14 days of antibiotics. Over 8 weeks, the team tracks adverse events, gastrointestinal symptoms, stool consistency, and whether the infection is cleared.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Bacillus probiotic supplements (LiveSpo CLAUSY and LiveSpo DIA30)
- What this could lead to
- If the probiotics help, doctors could add them to standard H. pylori treatment to ease antibiotic side effects and help patients finish the full course.
- What could go wrong
- Probiotics may not reduce side effects or improve cure rates, and the trial cannot show whether any benefit lasts. Some people may still get diarrhea or other gut problems during antibiotic treatment.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 336 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Oct 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients aged 18 to 65 years; * Diagnosed with H. pylori infection by the 13C-urea breath test or the rapid urease test; * Indicated for H. pylori eradication treatment with the four-drug bismuth regimen (BQT); * Agree to participate in the study and have been informed and signed the consent form Exclusion Criteria: * Active bleeding gastric or duodenal ulcer. * Use of antibiotics, acid-suppressing drugs (PPIs, H2RAs), non-steroidal anti-inflammatory drugs (NSAIDs), laxatives, antidiarrheals, or probiotics (excluding yogurt) within at least 4 weeks before participating in the study, except for laxatives used as part of the study's endoscopic preparation procedure. * Chronic inflammatory bowel disease (IBD), acute intestinal infection, gastrointestinal cancer (stomach cancer, colon cancer), acute or chronic pancreatitis, immunosuppression (including prolonged corticosteroid use), or psychiatric disorders. * Alcohol abuse, history of delirium tremens, or alcoholic liver disease. * Pregnant or breastfeeding women.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Tam Anh Ha Noi General Hospital
Hanoi, Vietnam
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