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Cannabis oil put to the test for restless legs in First-Ever controlled trial

NCT ID NCT06863740

Symptom relief Sponsor: Sunnybrook Health Sciences Centre Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This pilot study will test whether cannabis oil is safe and feasible for treating restless legs syndrome (RLS). Thirty adults with moderate-to-severe RLS will receive either cannabis oil (with a 5:1 ratio of CBD to THC) or a placebo for 8 weeks. Researchers will track side effects, study completion rates, and changes in sleep and quality of life.

What this could mean

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

Active substance
cannabis oil (CBD:THC 5:1)
What this could lead to
If it works, this could point toward a new treatment option for restless legs syndrome that may improve sleep and quality of life.
What could go wrong
This is a very small, early pilot study focused on safety and feasibility, not effectiveness. It may not show clear benefits, and results may not apply to everyone with RLS.

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

About 30 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2025

Expected to finish

May 2027

An estimate. End dates often move.

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

25 years and older

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * ≥25 years of age * diagnosis of RLS based on the International RLS Study Group criteria * refractory RLS symptoms despite use of dopaminergic and/or alpha-2-delta ligand therapy * onset of RLS at least 6 months before screening Exclusion Criteria: * sleep disordered breathing, or sleep disordered breathing that is not adequately controlled on therapy (apnea-hypopnea index of \>15) * cannabis use within 4 weeks of study enrollment * known allergy to cannabis, cannabinoids or palm/coconut oil * Currently pregnant or breast-feeding (a negative urine pregnancy test must be obtained for women of childbearing potential during pretreatment evaluation) * Active substance abuse * Ischemic heart disease with unstable angina or recent acute coronary syndrome in the last 3 months, uncontrolled arrhythmias, poorly controlled hypertension * Serious liver disease * History of schizophrenia or any other psychotic disorder

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Conditions

The condition(s) this trial relates to.

restless legs syndrome

As listed by the trial registrant

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

Restless leg syndrome (RLS)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Sunnybrook Health Sciences Centre

    RECRUITING

    Toronto, Ontario, M4N3M5, Canada

  • University Health Network

    RECRUITING

    Toronto, Ontario, M5G 2C4, Canada

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