Important
Greenleaf Medical Clinic does not conduct, sponsor, or enrol participants in these studies. Patients should contact each study team directly.
Currently Recruiting
Study statuses can change. Overall trial statuses may differ from individual Canadian site statuses.
Statuses last verified September 23, 2026
UBC Medical Cannabis Driving Study
Explores driving performance, cognition and blood THC levels among therapeutic cannabis users.
Location: Vancouver, BC
Research Team: University of British Columbia
Medical Cannabis Real World Evidence
Research study to understand the effects of medical cannabis over 6 months in adults with chronic pain, epilepsy, or issues with sleep, anxiety, or depression.
Location: Canada-wide
Research Team: MyMedi
Evaluating THC as an Adjunct to Opioid Agonist Therapy
Researchers are examining the potential role of THC alongside opioid agonist therapy in the care of individuals with opioid use disorder.
Location: Vancouver, BC
Research Team: University of British Columbia
Using Cannabis to Treat Restless Leg Syndrom
Are you living with Restless Legs Syndrome (RLS) and finding that your current treatments aren’t quite enough? This new study is looking into whether cannabis oil could be a helpful option.
Location: Toronto, ON
Research Team: Sunnybrook Health Sciences Centre
Cannabis for Osteoarthritis Pain Effectiveness
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.
Location: Toronto, ON and Montreal, QC
Research Team: University Health Network
Investigating the Effectivenes of CBD for Bipolar Depression
The purpose of this study is to examine whether cannabidiol, also known as CBD, is effective in treating symptoms of depression in people diagnosed with bipolar disorder type I or II when added to their regular medications.
Location: Vancouver, BC
Research Team: University of British Columbia
Cannabis (THC vs. CBD) in Multiple Sclerosis
This study aimts to investigate the differential effects of THC vs. CBD on cognition in people with MS.
Location: Calgary, AB
Research Team: University of Calgary
Upcoming or Ongoing Studies
Tirzepatide in the Treatment of Cannabis Use Disorder
A clinical trial to evaluate the safety, tolerability and efficacy of tirzepatide assisted psychotherapy in adults with cannabis use disorder.
Location: Toronto, ON
Research Team: McMaster University
Completed, Closed or Withdrawn Studies
Cannabis for Cancer-Related Symptoms
Major Canadian multicentre trial. A 2026 preprint reported meaningful benefit for approximately half of participants, especially for sleep-related symptoms, but it is not yet peer reviewed.
Location: Alberta, British Columbia, Manitoba, Ontario, Quebec
Research Team: British Columbia Cancer Agency
Cannabis Extract for Refractory Epilepsy
Canadian Phase 3 CBD/THC trial that enrolled only 17 of its planned 80 participants. No results were posted,
Location: Toronto, ON
Research Team: University Health Network
Registry: NCT03808935