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Can probiotics get things moving? new trial aims to find out
NCT ID NCT07462494
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tests whether a daily probiotic supplement can help relieve constipation in adults. Thirty participants will take either a probiotic or a placebo for 8 weeks. Researchers will track changes in stool consistency to see if the probiotics improve bowel function.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Probiotics (GUT99)
- What this could lead to
- If it works, this could point toward a simple, over-the-counter option for managing constipation without medication.
- What could go wrong
- This is a very small, early-stage trial with only 30 people. Results may not apply to everyone, and the effect might be no better than a placebo.
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 30 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jun 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2026
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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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Aged 18-65 years. 2. Patients with constipation, defined as fewer than three bowel movements per week and/or Bristol Stool Form Scale (BSFS) types 1-2. 3. Able to comply with the study protocol and complete the study procedures. 4. Participants who have voluntarily signed the informed consent form. 5. Participants (including male participants) must have no plans for pregnancy from 14 days before screening until 6 months after the end of the study and must agree to use effective contraception during this period. \- Exclusion Criteria: 1. Individuals who have recently taken products with similar functions to the investigational product that may affect the evaluation of study outcomes. 2. Participants who plan to change their dietary habits during the study period. 3. Patients with severe allergies or immunodeficiency. 4. Women who are pregnant, breastfeeding, or planning to become pregnant. 5. Patients with severe diseases of major organs such as the cardiovascular system, lungs, liver, or kidneys, or those with severe metabolic diseases (e.g., diabetes or thyroid disorders), malignant tumors, or severe immune system diseases. 6. Individuals who have used antibiotics within the past two weeks. 7. Individuals with severe psychological or psychiatric disorders. 8. Participants who fail to take the investigational product as required or fail to attend scheduled follow-up visits, resulting in an inability to determine treatment efficacy. 9. Any other participants considered unsuitable for participation in the study by the investigator. \-
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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 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.
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