Cannabinoids for Osteoarthritis Pain Effectiveness Trial
The Effectiveness of Oral Cannabis Extracts for Osteoarthritic Pain: an Internal Pilot, Placebo Controlled, Blinded Randomized Trial
University Health Network, Toronto
100 participants
Jan 29, 2026
INTERVENTIONAL
Conditions
Summary
This study aims to investigate whether oral cannabis extracts can effectively manage pain caused by osteoarthritis (OA), a common joint condition affecting one in seven Canadians. Current OA treatments often have limited effectiveness and may cause side effects. As a result, many individuals with OA turn to medical cannabis for pain relief, despite limited scientific evidence supporting its efficacy. The goal of this study is to assess the feasibility of a larger trial evaluating the effects of two cannabis compounds-CBD and THC-compared to a placebo (a look-alike substance containing no active drug) on pain interference in patients with hip and/or knee osteoarthritis. Participants will: * Take either CBD, THC, or a placebo capsule daily for 8 weeks * Complete follow-ups remotely, with no in-person clinic visits required * Maintain a diary tracking their study drug usage and any additional pain medications
Eligibility
Plain Language Summary
Simplified for easier understanding
This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.
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Interventions
The starting dose will be 1 capsule per day (50 mg CBD) taken orally. The dose will be gradually increased over the first four weeks, based on patient assessment, up to a maximum of five capsules per day (250 mg CBD) in divided doses. Once the dose that maximizes potential therapeutic effects while minimizing adverse effects has been determined, it will be maintained for the remaining four weeks of the trial.
The starting dose will be 1 capsule per day (3 mg THC) taken orally. The dose will be gradually increased over the first four weeks, based on patient assessment, up to a maximum of five capsules per day (15 mg THC) in divided doses. Once the dose that maximizes potential therapeutic effects while minimizing adverse effects has been determined, it will be maintained for the remaining four weeks of the trial.
The starting dose will be 1 capsule per day taken orally. The dose will be gradually increased over the first four weeks, based on patient assessment, up to a maximum of five capsules per day in divided doses. Once the dose that maximizes potential therapeutic effects while minimizing adverse effects has been determined, it will be maintained for the remaining four weeks of the trial.
Locations(3)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT06878417