Could a common supplement slow Alzheimer's? new trial aims to find out
NCT ID NCT06797817
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This Phase 3 trial tests whether a daily supplement called tributyrin can slow cognitive decline in people with mild Alzheimer's disease. Over 12 weeks, 156 participants will take either tributyrin or a placebo. Researchers will measure changes in memory, thinking, gut bacteria, and inflammation markers to see if boosting butyrate levels helps protect the brain.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- tributyrin (a dietary supplement that boosts butyrate levels)
- What this could lead to
- If it works, this could point toward a simple, safe supplement to slow cognitive decline in early Alzheimer's disease.
- What could go wrong
- This is still an early-stage Phase 3 trial with only 156 participants. The supplement may not improve cognition or gut health, and results may not apply to everyone with Alzheimer's.
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 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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About 156 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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Sep 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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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: * individuals diagnosed with mild AD within the past year (ICD-10: F00.1). * voluntary consent to participate in the study in accordance with the Declaration of Helsinki. * not currently enrolled in any other clinical trial that could confound the results. Exclusion Criteria: * individuals with other potential causes of dementia, such as a history of severe traumatic brain injury, brain tumours, epilepsy, or central nervous system infections. * individuals involved in an intervention that interferes with the trial (immunosuppressive drugs, steroids, antibiotics, or received chemotherapy in the month prior to the start of the intervention). * individuals with gastrointestinal disorders.
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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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Universidad de Almería
Almería, Spain
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Other studies related to the condition(s) this trial covers.
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