Crick
HomeTrialsGenesDrugs23andMeGraphBlogContact
  • Home
  • Trials
  • Genes
  • Drugs
  • 23andMe
  • Graph
  • Blog
  • Contact
Crick

An open-source clinical intelligence platform. Explore clinical trials, gene networks, and molecular structures using public data sources.

Data Sources

  • ClinicalTrials.gov
  • OpenTargets
  • ClinVar
  • PubChem

Links

  • Contact
  • Privacy

© 2026 Crick. All rights reserved.

Crick is for educational purposes only. Not medical advice.

Results for “Marijuana User”

Filters

Phase
Early Phase 1
Phase 1
Phase 2
Phase 3
Phase 4
Status
Recruiting
Active, Not Recruiting
Not Yet Recruiting
Completed
Enrolling by Invitation

Showing 19 of 0 results

Testing effectiveness (Phase 2)Looking for participantsNCT06099379
What this trial is testing

Modulation of THC Effects by CBD: a Dose-ranging Study

Who this might be right for
CannabisTHC
Centre hospitalier de l'Université de Montréal (CHUM) 100
Not applicableStudy completedNCT04737772
What this trial is testing

Project CheckUP: A Brief Behavioral Intervention for Quitline Callers Who Use Marijuana (MJ) and Tobacco

Who this might be right for
Smoking CessationMarijuana Use
Consumer Wellness Solutions 107
Not applicableLooking for participantsNCT05401929
What this trial is testing

Transcranial Magnetic Brain Stimulation to Reduce Cannabis Use in Heavy Cannabis Users

Who this might be right for
Cannabis
Duke University 50
Not applicableStudy completedNCT02711371
What this trial is testing

Social and Emotional Brain Function in Cannabis Users

Who this might be right for
Cannabis Dependence
University of Electronic Science and Technology of China 43
Not applicableStudy completedNCT01335789
What this trial is testing

Effect of Oxytocin on Stress in Marijuana Users

Who this might be right for
Marijuana Dependence
Medical University of South Carolina 16
Not applicableStudy completedNCT03432013
What this trial is testing

Affective Management Training for Cannabis Misuse

Who this might be right for
Cannabis Use Disorder
University of California, Los Angeles 51
Not applicableLooking for participantsNCT06975020
What this trial is testing

Pilot-Study for the Comparison of Biomarkers Between Regular Cannabis Users and Non-Users

Who this might be right for
Driving Under the Influence of Cannabis
University of Basel 120
Not applicableStudy completedNCT03845842
What this trial is testing

Using Implementation Intentions to Reduce Cannabis Use

Who this might be right for
Cannabis Use
University of Manchester 311
Not applicableStudy completedNCT03662529
What this trial is testing

Neurobehavioral Measurement of Substance Users in Outpatient Treatment Setting

Who this might be right for
Cocaine DependenceCocaine Use DisorderOpiate Dependence+2 more
Hunter Holmes Mcguire Veteran Affairs Medical Center 35
Not applicableUnknownNCT04513756
What this trial is testing

Efficacy of Community Reinforcement Approach (CRA) in the Treatment of Cannabis Users

Who this might be right for
Cannabis Dependence
International Islamic University, Islamabad 120
Not applicableStudy completedNCT03495869
What this trial is testing

Feasibility and Validation of a Standard Phenotyping Assessment Battery

Who this might be right for
Opioid-use DisorderCocaine Use DisorderMarijuana Use Disorder+1 more
Virginia Commonwealth University 368
Early research (Phase 1)Ended earlyNCT04316598
What this trial is testing

Cannabis Effects on Electroencephalography

Who this might be right for
Healthy Volunteers
Parc de Salut Mar 16
Testing effectiveness (Phase 2)Study completedNCT00893074
What this trial is testing

The Effect of Prescription Medications in Marijuana Users

Who this might be right for
Marijuana Abuse
Johns Hopkins University 24
Not applicableLooking for participantsNCT06907979
What this trial is testing

Cannabis and Processing Emotions Study

Who this might be right for
Cannabis Use Disorder, Severe
Auburn University 24
Testing effectiveness (Phase 2)Not Yet RecruitingNCT05320367
What this trial is testing

Inhaled Cannabidiol in Healthy Occasional Cannabis Users

Who this might be right for
Cannabis
Centre hospitalier de l'Université de Montréal (CHUM) 80
Not applicableStudy completedNCT02061020
What this trial is testing

Study of the Relationship Between Dose-concentration-effect of Delta-9-tetrahydrocannabinol (THC) and the Ability to Drive in Chronic or Occasional Cannabis Users

Who this might be right for
Occasional (1-2 Joints Per Week) and Chronic (1-2 Joints Per Day) Cannabis Users
Assistance Publique - Hôpitaux de Paris 37
Testing effectiveness (Phase 2)WithdrawnNCT03883360
What this trial is testing

Effects of Cannabidiol on Psychiatric Symptoms, Cognition, and Cannabis Consumption in Cannabis Users With Recent-Onset Psychosis

Who this might be right for
Schizophrenia Spectrum DisordersCannabis Use
University of Maryland, Baltimore
Testing effectiveness (Phase 2)Ended earlyNCT03251326
What this trial is testing

Nabilone in Cannabis Users With PTSD

Who this might be right for
CannabisPost Traumatic Stress Disorder
New York State Psychiatric Institute 4
Testing effectiveness (Phase 2)Study completedNCT05407285
What this trial is testing

Ingested Cannabidiol in Healthy Occasional Cannabis Users

Who this might be right for
Cannabis
Centre hospitalier de l'Université de Montréal (CHUM) 70