Not applicableWithdrawnNCT04266314What this trial is testingMaternal Marijuana Use and Fetal and Infant OutcomeWho this might be right forCannabis Use DisorderPregnancy Related Johns Hopkins University
Large-scale testing (Phase 3)WithdrawnNCT04340700What this trial is testingCharacterization of the Pharmacodynamic Response to Vaped THCWho this might be right forVapingTHC Massachusetts General Hospital
Not applicableNot Yet RecruitingNCT07699198What this trial is testingDeveloping and Strengthening Cannabis Warnings: Warning Message TestingWho this might be right forCannabisMarijuana Use University of North Carolina, Chapel Hill 1,500
Large-scale testing (Phase 3)UnknownNCT00547963What this trial is testingBrief Counseling to Reduce Injuries Among Emergency Department Patients Who Report Alcohol and Substance UseWho this might be right forAlcohol DrinkingMarijuana Smoking National Institute on Alcohol Abuse and Alcoholism (NIAAA) 554
Not applicableStudy completedNCT04989205What this trial is testingCommunity Based Cannabis Cessation ProgramWho this might be right forCannabis Use Sorlandet Hospital HF 102
Very early researchNot Yet RecruitingNCT07694466What this trial is testingLung Health and Breath Biomarkers: Acute Effects of Inhaled CannabisWho this might be right forCannabis UseTobaccoBiomarkers Hannah Harris 12
Not applicableStudy completedNCT04429568What this trial is testingTHC Crossover StudyWho this might be right forTHCCannabisCannabis Smoking+6 more University of California, San Francisco 14
Not applicableStudy completedNCT03633149What this trial is testingChoices4Health: Intervention to Prevent Substance-exposed PregnancyWho this might be right forPrenatal Alcohol ExposurePrenatal Tobacco ExposurePrenatal Marijuana Exposure University of Texas at Austin 219
Not applicableLooking for participantsNCT07398443What this trial is testingUsing Novel Behavioral Economic Measures to Characterize Dual Marijuana and Tobacco Use in Young AdultsWho this might be right forBehavioral EconomicsCannabis SmokingTobacco Smoking Brown University 120
Not applicableStudy completedNCT01536899What this trial is testingMedical Marijuana Use in HIV+ Patients Prospective Cohort StudyWho this might be right forHIV PositiveMarijuana Smoking Wayne State University 119
Not applicableTemporarily pausedNCT06077292What this trial is testingCannabis THC Potency, Metabolism, and Cognitive Impairment in Young AdultsWho this might be right forCannabis UseTHCMarijuana Use+2 more University of California, San Francisco 110
Not applicableStudy completedNCT00107562What this trial is testingAdolescent Safer Sex Social Network InterventionWho this might be right forSexual BehaviorAlcohol DrinkingMarijuana Smoking University of North Carolina, Chapel Hill 200
Early research (Phase 1)Looking for participantsNCT06609083What this trial is testingEffect of Cannabis on Cigarette Use BehaviorWho this might be right forCannabis UseTobacco UseCigarette Smoking Johns Hopkins University 100
Not applicableStudy completedNCT06945471What this trial is testingComputer-Mediated Versus Face-to-Face Motivational-Type InterviewsWho this might be right forMarijuana Use University of Texas, El Paso 150
Not applicableLooking for participantsNCT02480283What this trial is testingChronic Cannabis Smoking, Oxidative Stress and the Pulmonary Innate Immune ResponseWho this might be right forCannabis SmokingOxidative Stress University of Colorado, Denver 100
Testing effectiveness (Phase 2)UnknownNCT01040910What this trial is testingCannabis for Inflammatory Bowel DiseaseWho this might be right forCrohn's DiseaseUlcerative Colitis Meir Medical Center 20
Not applicableStudy completedNCT01010620What this trial is testingScreening Protocol for Research ParticipantsWho this might be right forSchizophreniaSubstance AbuseCocaine Abuse+1 more University of Maryland, Baltimore 523
Large-scale testing (Phase 3)Study completedNCT01473719What this trial is testingEmerging Adults Who Use Alcohol and MarijuanaWho this might be right forAlcohol UseMarijuana UseSexually Transmitted Infections Butler Hospital 566
Not applicableStudy completedNCT07413432What this trial is testingA Virtual Reality Game to Prevent E-cigarette and Cannabis VapingWho this might be right forCannabisVapingEmotion Regulation Yale University 62
Large-scale testing (Phase 3)Study completedNCT02955329What this trial is testingVaping THC From Electronic CigarettesWho this might be right forMarijuana Dependence University of California, San Francisco 8