Can a daily fiber blend reshape your gut bacteria?
NCT ID NCT07787026
First seen Aug 26, 2026 · Last updated Aug 27, 2026 · Updated 1 time
Summary
This trial tests whether a daily multi-fiber supplement can improve gut health in healthy adults. About 100 participants will take either the supplement or a placebo for 10 days. Researchers will measure changes in stool frequency and consistency, as well as shifts in gut bacteria that produce beneficial short-chain fatty acids. The goal is to see if this simple supplement can support better digestion and regularity.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- a formulated prebiotic multi-fiber supplement
- What this could lead to
- If it works, this could point toward a simple dietary supplement to support regular bowel movements and a healthier gut microbiome in healthy people.
- What could go wrong
- This is a short, early-stage trial with only 100 participants, so results may not apply broadly. Some people may experience digestive discomfort from the fiber.
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 100 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Aug 2026
An estimate. Start dates often move.
- Expected to finish
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Aug 2029
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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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: * in self-reported good health (i.e. no chronic disease, no acute illness) Exclusion Criteria: * chronic disease * acute illness * antibiotic, or probiotic, or prebiotic use in the prior 3 months * allergies to any of the following: psyllium husk powder, mustard, sesame, soy, tree nuts, pectin, citric acid, wheat, milk, egg, beta-glucan, barley, inulin, agave, resistant maltodextrin, arabinoxylan * adherence to any food-group strict diet (e.g. vegan, vegetarian, keto, etc.) * any of the following groups: adults unable to consent, individuals that are not yet adult, pregnant women, prisoners
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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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Biomedical Center
RECRUITINGProvidence, Rhode Island, 02912, United States