Suspended

PROBEProbiotics for Postoperative Symptoms and Gut Health After Sleeve Gastrectomy

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Study Aim

This study aims to assess whether taking probiotics can help reduce constipation and improve gut health in individuals recovering from sleeve gastrectomy surgery.

What is being tested

Probiotic

+ Diet

Dietary SupplementOther
Who is being recruted

Body Weight+7

+ Constipation

+ Nutrition Disorders

Over 18 Years
See all eligibility criteria
How is the trial designed

Prevention Study

Placebo-Controlled
Interventional
Study Start: July 2025
See protocol details

Summary

Principal SponsorUniversity of Warmia and Mazury in Olsztyn
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: July 10, 2025

Actual date on which the first participant was enrolled.

This study is designed to explore whether taking probiotics can enhance the quality of life for patients after sleeve gastrectomy by improving digestive health and the absorption of nutrients. It specifically targets individuals with a body mass index (BMI) of 40 kg/m² or higher, who are preparing to undergo this weight loss surgery. The research aims to determine if probiotics can help with symptoms like constipation, which can affect patients after surgery, and ultimately improve their recovery experience. Participants in this study will first provide a stool sample before surgery to analyze their gut bacteria. After the sleeve gastrectomy procedure, they will be randomly assigned to one of two groups; one group will take probiotics containing specific beneficial bacteria, while the other group will receive a placebo that has no active ingredients. Researchers will collect stool samples again at one and three months post-surgery to compare changes in gut bacteria between the two groups. The main focus is to see if probiotics can reduce constipation, with participants reporting whether they experience this issue in the weeks following surgery.

Official TitleStudy on the Impact of Probiotics on Postoperative Gastrointestinal Symptoms and Gut Microbiota After Sleeve Gastrectomy: A Randomized-Control Trial
Principal SponsorUniversity of Warmia and Mazury in Olsztyn
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

200 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Prevention Study

Prevention studies aim to stop a disease from developing. They often involve people at risk and test things like vaccines, lifestyle changes, or preventive medications.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Body WeightConstipationNutrition DisordersNutritional and Metabolic DiseasesObesitySigns and SymptomsSigns and Symptoms, DigestivePathological Conditions, Signs and SymptomsOvernutritionOverweight

Criteria

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.

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

50% chance of being blinded to the placebo group

Treatment Groups

Group I

Active Comparator

Group II

Placebo

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

University of Warmia and Mazury

Olsztyn, PolandOpen University of Warmia and Mazury in Google Maps
SuspendedOne Study Center