Could a sweetener beat a gut infection? new trial explores xylitol for c. diff in IBD
NCT ID NCT05852587
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests if xylitol, a common sweetener, can safely clear C. difficile bacteria from the gut in people with inflammatory bowel disease (IBD). About 99 adults with mild or inactive IBD will take either a low or high dose of xylitol or a placebo for four weeks. Researchers will check stool samples over a year to see if the infection is gone and if symptoms improve.
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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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 99 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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Jan 2033
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. Signed informed consent. 2. Male or female ≥ 18 years of age 3. IBD diagnosis (CD, UC or indeterminant Colitis will be permitted) 4. Inactive or mild IBD (HBI score ≤ 7; Partial Mayo score ≤ 4) 5. Presenting for outpatient colonoscopy or clinic appointment for any indication Exclusion Criteria: 1. Unable to provide consent 2. Patients with previous colectomy, ostomy, J-pouch, or previous colon surgery (excluding appendectomy) 3. Unable to complete study procedures 4. Chronic use of antibiotics 5. Inability or unwillingness to swallow capsules 6. Allergy to xylitol 7. Stool positive for Listeria monocytogenes
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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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Brigham and Women's Hospital
Boston, Massachusetts, 02115, United States
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Other studies related to the condition(s) this trial covers.
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- Can a liquid diet calm Crohn's in kids?
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- Massive Real-World database aims to map how chronic diseases interact
- Staph bacteria may hold clues to painful skin rashes in IBD patients on Anti-TNF therapy