Clinical trial No longer in our active list Interventional Ages 18 to 65

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 typeInterventional
Ages18 Years to 65 Years
SexAll
Enrollment18 (estimated)
SponsorThe University of Hong Kong
Academic / other
Locations1 site (Hong Kong)
Trial IDNCT05292547 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

  • 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.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.