Not applicableEnded earlyNCT03700892What this trial is testingIn-vivo Effects of E-cigarette Aerosol on Innate Lung Host DefenseWho this might be right forSmokingHealthy University of North Carolina, Chapel Hill 19
Not applicableWithdrawnNCT06983392What this trial is testingPersistence of Oral DNA Adducts in Smokers and VapersWho this might be right forSmokersVapingHealthy Volunteers University of Minnesota
Not applicableStudy completedNCT03358953What this trial is testingThe Cardiovascular Impacts of Electronic Cigarettes in Comparison to the Use of Nicotine Replacement PatchesWho this might be right forSmoking, Tobacco NHS Greater Glasgow and Clyde 55
Not applicableStudy completedNCT04140617What this trial is testingBystanders' Exposure to Electronic Cigarette Aerosol in Confined SettingsWho this might be right forSecondhand Exposure to Electronic Cigarette Institut Català d'Oncologia 2
Not applicableLooking for participantsNCT07214168What this trial is testingVape Use Among Younger & Older SmokersWho this might be right forSmoking CigaretteSmoking BehaviorsVaping+1 more Abramson Cancer Center at Penn Medicine 100
Not applicableStudy completedNCT04465318What this trial is testingElectronic Cigarettes as a Harm Reduction Strategy Among Patients With COPDWho this might be right forCOPD NYU Langone Health 146
Not applicableNot Yet RecruitingNCT07207850What this trial is testingParents Helping Parents for Youth Vaping CessationWho this might be right forImplementation ScienceEngagement, PatientE Cigarette Use+4 more University of Nebraska 200
Not applicableStudy completedNCT03710590What this trial is testingEffects of Electronic Cigarette Settings and Liquid Concentrations in Cigarette Smokers and Electronic Cigarette UsersWho this might be right forElectronic Cigarettes Virginia Commonwealth University 45
Testing effectiveness (Phase 2)Looking for participantsNCT07322432What this trial is testingThe CONQUER Trial - Cessation Of Nicotine, QUitting With E-cigarette ReductionWho this might be right forAddiction Nicotine VapeAway 70
Not applicableNot Yet RecruitingNCT06063421What this trial is testingComparison of Nicotine Replacement Therapy and Electronic Cigarettes for Smoking Cessation in PakistanWho this might be right forSmoking CessationElectronic Cigarette Use Strategic Health Research Limited 438
Not applicableStudy completedNCT06456671What this trial is testingExamining the Generality of Laboratory-based Findings and Their Moderators in the ITC StudyWho this might be right forCigarette SmokingNicotine Vaping Virginia Polytechnic Institute and State University 443
Post-approval studies (Phase 4)Active Not RecruitingNCT05206435What this trial is testingMethadone-Maintained Smokers Switching to E-CigarettesWho this might be right forNicotine DependenceElectronic Cigarette Use Butler Hospital 240
Not applicableStudy completedNCT03575468What this trial is testingEnhanced E-cigarette Coaching Intervention for Dual Users of Cigarettes and E-cigarettesWho this might be right forSmoking Cessation Consumer Wellness Solutions 110
Not applicableStudy completedNCT04332926What this trial is testingEffects of E-Cigarette Nicotine Content in Smokers (Nicotine Flux Study)Who this might be right forElectronic Cigarette Use Virginia Commonwealth University 44
Not applicableStudy completedNCT03596034What this trial is testingCharacterize Puff Topography With Use of JUUL 5% Electronic Nicotine Delivery Systems (ENDS) in Adult SmokersWho this might be right forTobacco UseNicotine Dependence, Other Tobacco ProductTobacco Smoking Juul Labs, Inc. 30
Not applicableNot Yet RecruitingNCT06819969What this trial is testingThe Canadian Lung Outcomes in Users of Vaping Devices StudyWho this might be right forSmall Airways DiseasesVapingVaping Related Disorder+2 more University of British Columbia 500
Not applicableStudy completedNCT04399031What this trial is testingEffects of e-Cigarettes on Perceptions and Behavior - Substudy 1Who this might be right forElectronic Cigarette UseCigarette Use, ElectronicVaping+1 more University of Southern California 124
Not applicableLooking for participantsNCT06264154What this trial is testingThe Role of Flavor in the Substitutability of E-cigarettes for Combustible Cigarettes Among Persistent SmokersWho this might be right forSmokingTobacco UseCigarette Smoking+1 more Abramson Cancer Center at Penn Medicine 210
Not applicableStudy completedNCT03061253What this trial is testingE-cigarettes and Cardiovascular FunctionWho this might be right forSmoking CessationCardiovascular DiseasesMicrocirculation+1 more Sheffield Hallam University 248
Not applicableStudy completedNCT04450537What this trial is testingPACE Vape Messaging StudyWho this might be right forVapingE-cigarette UseElectronic Cigarette Use University of Vermont 569