Gut bugs after surgery: do probiotics ease Post-Op woes?
NCT ID NCT07258732
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether taking probiotics after sleeve gastrectomy (a type of weight-loss surgery) can reduce constipation and other stomach issues. About 200 adults with severe obesity will take either a probiotic blend or a placebo for three months after surgery. Researchers will track bowel habits and gut bacteria changes to see if probiotics improve recovery and quality of life.
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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 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2025
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
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 years and older
- 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: 1. Age over 18 years. 2. BMI over 40 kg/m² or over 35 kg/m² with obesity-related comorbidities. 3. Successful qualification for sleeve gastrectomy. 4. Informed consent to participate in the study. Exclusion Criteria: 1. Age under 18 years. 2. Chronic gastrointestinal diseases. 3. Use of antibiotic therapy within 4 weeks prior to surgery. 4. Lack of consent to participate in the study.
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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.
Contacts and locations
Locations
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University of Warmia and Mazury
Olsztyn, 10-015, Poland
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Other studies related to the condition(s) this trial covers.
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