Post-approval studies (Phase 4)Study completedNCT00586482What this trial is testingPilot Study: Preoperative Nicotine LozengesWho this might be right forSmoking Mayo Clinic 46
Large-scale testing (Phase 3)Study completedNCT00840242What this trial is testingSmoking Reduction or Cessation With Nicotine Replacement TherapyWho this might be right forSmoking Cessation McNeil AB 314
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 completedNCT01202942What this trial is testingUse and Harm Exposure in New Low Nicotine CigarettesWho this might be right forCigarette Smoking University of Pennsylvania 246
Not applicableStudy completedNCT01509586What this trial is testingA Test of Short and Long Term Naturalistic Outcomes of Smokers Who Sample Smokeless TobaccoWho this might be right forSmokingSmoking Cessation Medical University of South Carolina 1,236
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
Testing effectiveness (Phase 2)Study completedNCT04092101What this trial is testingLow Nicotine Content Cigarettes in Vulnerable Populations: Opioid Use DisorderWho this might be right forTobacco Use Disorder University of Vermont 326
Not applicableStudy completedNCT03743532What this trial is testingE-Cigarettes and Financial Incentives to Promote Tobacco Harm Reduction Among Adults Accessing Shelter ServicesWho this might be right forCigarette Smoking University of Oklahoma 60
Not applicableStudy completedNCT02337400What this trial is testingEvaluation of a Cognitive Behavioral Smoking Reduction ProgramWho this might be right forTobacco Reduction Ludwig-Maximilians - University of Munich 155
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 applicableStudy completedNCT04749017What this trial is testingThe Potential Effect of Avena Sativa L. on Wellness/Wellbeing During Smoking Reduction/Cessation ExperienceWho this might be right forSmoking Reduction Universidad Católica San Antonio de Murcia 140
Not applicableStudy completedNCT04340947What this trial is testingCigarette Smoking Among Young AdultsWho this might be right forCigarette SmokingSmoking Behaviors University of Oklahoma 171
Testing effectiveness (Phase 2)UnknownNCT00678938What this trial is testingSmoking Interventions in the General PopulationWho this might be right forTobacco Smoking University Medicine Greifswald 1,462
Not applicableUnknownNCT04891939What this trial is testingDevelopment and Assessment of a Teacher-led Intervention in Preventing Tobacco Use Among the Youth in GhanaWho this might be right forSmoking ReductionSmoking CessationSmoking, Tobacco+1 more Ghana Health Services 2,314
Not applicableLooking for participantsNCT05429892What this trial is testingFRESH Delivers: An Innovative Approach to Reducing Tobacco Use Among Rural SmokersWho this might be right forTobacco CessationTobacco DependenceFood Security University of Arkansas 540
Testing effectiveness (Phase 2)Study completedNCT02250534What this trial is testingProject 1, Study 2: Extended Exposure to Low Nicotine Content Cigarettes in Childbearing Age WomenWho this might be right forTobacco Use Disorder University of Vermont 775
Not applicableUnknownNCT03962660What this trial is testingHarm Reduction for Tobacco Smoking With Support of Tobacco-Replacing Electronic Nicotine Delivery SystemsWho this might be right forSmoking, Tobacco University of Washington 94
Not applicableStudy completedNCT01995097What this trial is testingBABY STEPS II: SMS Scheduled Gradual Reduction Text Messages to Help Pregnant Smokers QuitWho this might be right forSmokingPregnancy Duke University 331
Large-scale testing (Phase 3)Study completedNCT00990977What this trial is testingMindfulness and Cancer Mamma - Clinical Trial MBSR Among Women Operated for Breast CancerWho this might be right forBreast Cancer Danish Cancer Society 336
Not applicableStudy completedNCT05599451What this trial is testingReduced Exposure to HPHC in Smokers Switching From Cigarettes to Different Versions of THSWho this might be right forSmokingTobacco SmokingTobacco Use Philip Morris Products S.A. 91