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Can fish oil calm ADHD and autism symptoms? a new trial investigates

NCT ID NCT06698588

Symptom relief Sponsor: Swansea University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 05, 2026 · Last updated Aug 06, 2026 · Updated 1 time

Summary

This trial tests whether daily omega-3 fish oil supplements can improve sleep, mood, and behavior in children who have sleep problems and symptoms of ADHD, autism, or both. The study takes a symptom-focused approach, aiming to identify which specific difficulties—like emotional ups and downs or poor sleep—might respond best to omega-3s. Around 200 children will receive either omega-3 capsules or a placebo for a period, and researchers will track changes in symptom patterns. The goal is to see if this natural supplement could be a helpful option for children who may not have a formal diagnosis but still struggle with these issues.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Omega-3 fish oil supplements (EPA and DHA)
What this could lead to
If effective, omega-3 supplements could offer a simple, natural way to ease sleep and behavioral symptoms in children with ADHD or ASD traits, potentially helping those without a formal diagnosis.
What could go wrong
This is an early-stage trial, and results may not apply to all children. The supplement might not outperform placebo, and benefits could be modest or limited to specific symptoms.

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

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

200 people

The number who actually took part.

Started

Nov 2024

Finished

Jan 2026

Lead sponsor

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

5 to 12 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: Autism Spectrum Quotient 10 score \>5 OR Conners 3 Handscored Short Parent Form T score \> 64 for either the inattention OR hyperactivity subscales OR Children Sleep Habits Questionnaire SF score \>30 Able to swallow capsules Exclusion Criteria: Any major psychiatric condition likely to require hospitalization (e.g., Psychotic Disorders; Eating Disorders), but NB: for representativeness of typical children with ADHD/ASD, diagnosed mood/anxiety/sleep or other neurodevelopmental disorders will not be exclusion criteria; Severe learning difficulties (e.g., Down syndrome) Any serious medical condition; (d) allergy to any ingredients of the intervention or related substances

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Conditions

The condition(s) this trial relates to.

attention deficit hyperactivity disorder, inattentive type attention deficit-hyperactivity disorder autism autism spectrum disorder sleep disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ADHD or ADHD traits Autism or autistic traits Sleep

Contacts and locations

Locations

  • FHMLS

    Swansea, SA28PP, United Kingdom

More trials for these conditions

Other studies related to the condition(s) this trial covers.