Using magnetic stimulation to help people with cannabis addiction
Official title: Substance Misuse To Psychiatric Disorders-Repetitive Transcranial Magnetic Stimulation to People With Cannabis Use Disorder
Run by The University of Hong Kong · NCT05292547 · Data updated 2026-05-14
This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.
This study is testing whether a type of magnetic stimulation can help people with cannabis addiction reduce their cravings and use less cannabis.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 65 Years |
| Sex | All |
| Enrollment | 18 (estimated) |
| Sponsor | The University of Hong Kong Academic / other |
| Locations | 1 site (Hong Kong) |
| Trial ID | NCT05292547 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults diagnosed with cannabis use disorder who can communicate in English or Chinese.
✕Probably not a fit
Patients under 18 years old or those with severe substance use disorders or contraindications to rTMS may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study explores the effectiveness of repetitive transcranial magnetic stimulation (rTMS) in reducing cravings, frequency of cannabis use, and the severity of cannabis use disorder (CUD) among participants. The research will compare different rTMS treatment schedules to determine their impact on these factors. Participants diagnosed with CUD will receive multiple rTMS sessions, and the study aims to assess the differences in outcomes based on the treatment schedule used.
Why it matters
Potential benefit: If successful, this approach could provide a novel therapeutic option for individuals struggling with cannabis use disorder.
How similar studies have gone: Other studies have shown promise in using rTMS for various substance use disorders, suggesting potential success for this approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Able to read and communicate in English and/or Chinese SToP-C-rTMS x CUD * Able to give informed consent * Using cannabis or marijuana as the primary psychoactive substance of abuse * Diagnosed with Cannabis Use Disorder according to the Diagnostic and Statistical Manual of Mental Disorders 5th Edition (DSM-5) by the Structured Clinical Interview for DSM-5 Disorders (SCID-5) Exclusion Criteria: * Age \<18 years old * Unable to read English or Chinese * Unable to give informed consent * Had been diagnosed with the following disorders, including neurodevelopmental disorders, DSM-5 defined substance use disorder greater than moderate in severity, and neurocognitive disorders * Contra-indicated to have rTMS, including subjects with electronic and/or magnetic implants (e.g. pacemaker, implantable cardioverter defibrillator \[ICD\], cerebral shunts, cochlear implant, etc.), with metallic or mechanic fragments (e.g., screws, plates, stents, clips, etc.), pregnant, with any known or history of neurological conditions including cerebral vascular accidents, epilepsy, brain tumor or space occupying lesion, poorly controlled or unstable diabetes mellitus, and receiving unstable dose(s) of antipsychotics, antidepressants, benzodiazepines and/or anticonvulsants in the past 6 months
Where it's running
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Queen Mary Hospital
Hong Kong, Hong Kong Recruiting
Study contacts
- Principal investigator: Albert KK Chung, MBBS — Department of Psychiatry, The University of Hong Kong
- Study coordinator: Albert KK Chung, MBBS
- Email: Chungkka@hku.hk
- Phone: +85260440993
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Can tACS modulate motivation and reward signals in cannabis use disorder and depression
We’re testing whether a gentle brain stimulation method (tACS) can boost motivation and reward responses in adults with cannabis use and/or depression to see if it helps with anhedonia.
-
Sex differences in how cannabis affects people who regularly use it
This Phase 2 trial tests whether men and women who use cannabis several days a week respond differently to THC versus placebo.
-
Semaglutide for cannabis use disorder: see if a medicine helps reduce use
This study tests whether weekly injections of semaglutide can help adults with cannabis use disorder reduce their cannabis use compared with placebo.
-
Brain imaging to predict teens' response to cannabis treatment
This project will test whether teens' brain activity during a learning task can predict how well 14–17-year-olds do in a 10-week virtual reward program to reduce cannabis use.
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Reducing cannabis use to improve daily functioning.
This program will try an 8-week combination of motivational interviewing, computerized CBT (CBT4CBT), and small financial rewards to help adults with cannabis use disorder cut back on cannabis.
-
Home-based brain stimulation with guided mindfulness for cannabis use disorder
This project tests whether daily at-home mild brain stimulation plus guided mindfulness can help adults with cannabis use disorder reduce or stop their cannabis use.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.