Not applicableEnded earlyNCT07172438What this trial is testingA RCT to Determine the Effect of ENDS Flavor Availability on Abstinence Within SmokersWho this might be right forSmokingTobacco RAI Services Company 668
Not applicableStudy completedNCT04123041What this trial is testingCharacterize the Nicotine Uptake and Subjective Effects With Use of JUUL Electronic Nicotine Delivery SystemsWho this might be right forElectronic Cigarette UseTobacco Smoking Juul Labs, Inc. 137
Not applicableStudy completedNCT02210754What this trial is testingCharacterization of Nicotine Exposure and Urge-to-Smoke Following Use of Electronic and Conventional CigarettesWho this might be right forSmoking Lorillard Tobacco Company 24
Testing effectiveness (Phase 2)Looking for participantsNCT05722561What this trial is testingE-Cigarettes for Harm Reduction in Smokers With Opioid Use DisorderWho this might be right forOpioid Use DisorderCigarette Smoking NYU Langone Health 302
Large-scale testing (Phase 3)Active Not RecruitingNCT03630614What this trial is testingRandomized Trial of Electronic Cigarettes With or Without Nicotine in Smoking Cessation.Who this might be right forSmoking CessationSmoking, CigaretteElectronic Cigarette Assistance Publique - Hôpitaux de Paris 650
Not applicableLooking for participantsNCT07124702What this trial is testingCessation of Dual Use of Cigarettes and E-cigarettes During PregnancyWho this might be right forDual Use of Cigarettes and E-cigarettesGestational Weight GainBirth-weight-for-gestational-age z Score State University of New York at Buffalo 45
Not applicableStudy completedNCT05205382What this trial is testingAssessing the Effect of Nicotine Reduction on ENDS User's Addiction and ExposuresWho this might be right forElectronic Cigarette Use Florida International University 116
Not applicableUnknownNCT05482581What this trial is testingThe Impact of Policies Regarding E-cigarette on Adolescents and Young Adults' Cognition and Behavior for E-cigaretteWho this might be right forE-Cig Use Sun Yat-sen University 453
Not applicableStudy completedNCT05960305What this trial is testingCSD201204 An Actual Use Study of P12 Electronic Nicotine Delivery System Among U.S. Adult SmokersWho this might be right forSmoking, Tobacco RAI Services Company 1,845
Not applicableStudy completedNCT06919276What this trial is testingNicotine and Cannabis Vape Labeling Experiment - Spring 2025Who this might be right forVapingAdolescentElectronic Cigarette Use+2 more University of Southern California 3,048
Not applicableStudy completedNCT04316234What this trial is testingAcute Health Effects of Passive Vape Among COPD PatientsWho this might be right forElectronic Cigarette UseSecond Hand SmokeLung Function University of Aarhus 16
Post-approval studies (Phase 4)Study completedNCT05206435What this trial is testingMethadone-Maintained Smokers Switching to E-CigarettesWho this might be right forNicotine DependenceElectronic Cigarette Use Butler Hospital 183
Not applicableUnknownNCT02752022What this trial is testingMonitoring the Transition From Smoking to E-cigarettesWho this might be right forSmoking St George's, University of London 50
Not applicableUnknownNCT04014322What this trial is testingThe Effect of Electronic Cigarette Use on Smoking Behaviors Among Smokers Receiving Outpatient Psychiatric TreatmentWho this might be right forTobacco SmokingPsychiatric Disorders Fordham University 50
Not applicableEnded earlyNCT02612701What this trial is testingE-Cigarette Aerosol, Conventional Cigarette Smoke, and Myocardial PerfusionWho this might be right forCoronary Artery DiseaseMyocardial Perfusion Cedars-Sinai Medical Center 20
Very early researchStudy completedNCT06602492What this trial is testingCompensatory Behavior of E-cig Users in Response to Reduced Nicotine E-liquidsWho this might be right forHealthyNicotine AddictionElectronic Cigarette Use Rochester Institute of Technology 72
Not applicableStudy completedNCT04192032What this trial is testingAssessing the Effect of Flavor on ENDS Users' Experiences and ExposuresWho this might be right forElectronic Cigarette Use Florida International University 41
Not applicableUnknownNCT03573154What this trial is testingNicotine Pharmacokinetic in Blood and Analysis of Exhaled Breath After E-cigarette Smoking.Who this might be right forElectronic Cigarette University Hospital, Strasbourg, France 50
Post-approval studies (Phase 4)Looking for participantsNCT06474299What this trial is testingThe Avenues Study: Dual Use CessationWho this might be right forSmoking CessationElectronic Cigarette Use University of Wisconsin, Madison 500
Post-approval studies (Phase 4)Study completedNCT02482233What this trial is testingThe END Perioperative Smoking Pilot StudyWho this might be right forSmokingNicotine AddictionSurgery University of California, San Francisco 30