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CBD safety trial for athletes: could it protect against concussion?

NCT ID NCT06204003

Knowledge-focused Sponsor: University of Regina 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed Phase 1 study tested whether a high-CBD hemp extract is safe for healthy male athletes in contact sports. Thirty-four participants took increasing daily doses of CBD (up to 30 mg per kg of body weight) over several weeks. Researchers monitored brain and heart function, side effects, and how the body processes CBD. The goal was to check safety, not to prove it prevents or treats concussion.

What this could mean

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

Active substance
high-CBD cannabis/hemp isolate extract (99% CBD, 0.1% THC)
What this could lead to
If safe, this could support larger studies on CBD for concussion protection and pain management in athletes.
What could go wrong
This is a very early Phase 1 safety study with only 34 healthy athletes. It does not test effectiveness for concussion or pain, and results may not apply to the general public.

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

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

34 people

The number who actually took part.

Started

Feb 2024

Finished

Nov 2024

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

18 to 35 years

Sex

Male participants only

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: * Healthy male adults between 18-35 years of age that compete in contact sport athletics * No known cerebrovascular or cardiovascular complications * Not habitual recreational users of cannabis (i.e., \<1 day/week) or tobacco users * Agree not to consume any other cannabis or tobacco products while enrolled in the study * Agree to list any prescription medications being taken * Ability to maintain commitment to all proposed biopsychological and health questionnaires, and neuro-physiological, physiological, perceptual-cognitive, and functional motor skills laboratory tests Exclusion Criteria: * Female * Requirement to travel to the USA during study period; USA laws do not permit cross border with cannabis products * Use of cannabis-based therapy within 2 months (participants who have previously used a cannabis based therapy may be included if they have a 2 month period without use of cannabis based therapy prior to enrolment in the study) * Any level of cannabis in blood samples when sampled at the commencement of the study * Medically supervised for anxiety, depression, or other neurological conditions * Initiation or dosage change of oral or injected steroids within past 3 months * Allergy or known intolerance to any of the compounds within the study preparation * Inability to attend assessments on a regular basis at the pre-determined times, or failure to take drug on a daily basis * Clinically significant cardiac, renal or hepatic disease (as assessed by the site investigator) * Concussion

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As listed by the trial registrant

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

Healthy

Contacts and locations

Locations

  • Pasqua Hospital

    Regina, Saskatchewan, S4T 7T1, Canada

  • University of Regina

    Regina, Saskatchewan, S4S 0A2, Canada

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