Gut health breakthrough? postbiotics may ease ADHD symptoms in kids
NCT ID NCT07419659
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether taking postbiotics (beneficial bacteria byproducts) can improve ADHD symptoms like mood and sleep in children aged 6-13. Eighty participants will take two capsules daily for 8 weeks, with a 4-week follow-up. Researchers will track symptom changes using parent and teacher reports, sleep monitors, and diet diaries.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- postbiotics (lactic acid bacteria byproducts)
- What this could lead to
- If it works, this could point toward a simple dietary supplement to help ease ADHD symptoms like mood and sleep problems in children.
- What could go wrong
- This is a small, early-stage open-label study with no placebo group, so results may be biased. It also only lasts 8 weeks, so long-term effects are unknown.
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 80 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Dec 2028
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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6 to 13 years
- 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: 1. Age 6-13 years old 2. Has been diagnosed with ADHD and is taking medication regularly or has not yet started medication. Exclusion Criteria: 1. Have taken antibiotics within one month or are receiving antibiotic treatment 2. Have used probiotic products in powder, capsule or tablet form within one month (including yogurt, yogurt, Yakult and other related foods) 3. Those who are allergic to lactic acid bacteria products 4. Obtain a disability certificate 5. Participating in other human research 6. Determined unsuitable 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 places running it
1 site. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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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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China Medical University Hospital
Taichung, Taiwan, 404332, Taiwan
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