Deep Repetitive Transcranial Magnetic Stimulation for Cannabis Use Disorder

Inclusion Criteria: * Adult, age 25-65 * DSM-5 CUD, moderate or higher (4+ DSM-5 symptoms) * 4 or more days of cannabis use per week * Reports inhalation as one route of administration * Treatment-seeking (i.e., self-reported readiness to change of 5 or greater on a 0-10 readiness ruler) * Stable domicile and reliable transportation, and willingness to attend in-person visits at SJHH Hamilton. Exclusion Criteria: * Current psychotic symptoms, history of schizophrenia-spectrum disorders or bipolar disorder, or current PTSD * Active suicidality (past 3 months) or history of severe suicidality (i.e., requiring hospitalization) * Any other mental health condition deemed incompatible by the team * High risk alcohol involvement and/or 4+ symptoms of alcohol use disorder * Unstable management of an existing mental health condition or anticipation of a change to the treatment over the next 3 months * Current unstable medical condition (e.g., diabetes) * rTMS Contraindications: intracranial or metal implants in the head or nearby regions that cannot be safely removed; history of epilepsy or seizures; pregnancy (female participants only); pacemaker and/or implantable cardioverter-defibrillators). * Medication contraindications (e.g., bupropion \>300 mg/day due to risk of seizures, benzodiazepine equivalent dose to lorazepam \>2 mg/day). * History of recurrent headache or migraine (past year) * Significant literacy, visual, or hearing problems * Co-enrollment in a clinical drug trial