Not applicableStudy completedNCT02379325What this trial is testingText Message Stop Smoking Among Young PopulationWho this might be right forYoung Adult Behavioral Change Universiti Kebangsaan Malaysia Medical Centre 60
Not applicableStudy completedNCT02840435What this trial is testingStudy on Sit to Quit Phone InterventionWho this might be right forNicotine Dependence Duke University 23
Not applicableStudy completedNCT03750110What this trial is testingYorkshire Enhanced Stop Smoking StudyWho this might be right forCancer, LungRespiratory DiseaseHeart Diseases University of Nottingham 1,001
Testing effectiveness (Phase 2)Study completedNCT02051309What this trial is testingGuanfacine Clinical Trial for Smoking CessationWho this might be right forSmoking Cessation Yale University 121
Not applicableWithdrawnNCT03668769What this trial is testingQuitting Schedule Mobile Smartphone Application in Helping Participants to Quit SmokingWho this might be right forCigarette SmokerCurrent Every Day SmokerCurrent Smoker+1 more M.D. Anderson Cancer Center
Testing effectiveness (Phase 2)Study completedNCT00379054What this trial is testingIntervention for Support Persons to Help Smokers QuitWho this might be right forSmoking Cessation Mayo Clinic 70
Not applicableUnknownNCT02901886What this trial is testingREU-stop - Effect of Intensive Smoking Cessation Intervention on Smoking Cessation and Disease Activity in Patients With Rheumatoid Arthritis.Who this might be right forRheumatoid Arthritis Glostrup University Hospital, Copenhagen 150
Not applicableStudy completedNCT01824511What this trial is testingEffects of Quitting Study A Test of Pre-clinical FindingsWho this might be right forSmoking University of Vermont 287
Post-approval studies (Phase 4)Looking for participantsNCT06966362What this trial is testingVarenicline for Smoking Reduction in Veterans Not Ready To QuitWho this might be right forVeteransTobacco Use DisorderCigarette Smoking+1 more VA Office of Research and Development 400
Not applicableStudy completedNCT01862770What this trial is testingEffect of Lung Cancer Diagnoses on Family BehaviorsWho this might be right forLung CancerBlood Relatives of Patient w/Lung CancerCigarette Smokers National Human Genome Research Institute (NHGRI) 507
Not applicableStudy completedNCT02866760What this trial is testingHelping In-patients to Quit Smoking by Understanding Their Risk Perception, Behavior, and Attitudes Related to SmokingWho this might be right forSmoking The University of Hong Kong 412
Post-approval studies (Phase 4)Looking for participantsNCT07419425What this trial is testingMy Path to Quit TobaccoWho this might be right forSmoking Cessation University of Wisconsin, Madison 1,550
Early research (Phase 1)Study completedNCT02151591What this trial is testingNew Approaches to Smoking Cessation in Heavy DrinkersWho this might be right forNicotine DependenceCigarette SmokingAlcohol Consumption+1 more Yale University 26
Testing effectiveness (Phase 2)Study completedNCT00139750What this trial is testing12 Week Evaluation of the Safety and Efficacy of 3 Doses of CP-526,555 and Placebo for Smoking CessationWho this might be right forSmoking Cessation Pfizer 600
Not applicableStudy completedNCT02224391What this trial is testingSmartphone-Delivered Attentional Bias Modification Training in Helping Patients Quit SmokingWho this might be right forCurrent Every Day Smoker M.D. Anderson Cancer Center 311
Not applicableNot Yet RecruitingNCT07649044What this trial is testingPromoting Smoking Cessation in the Community Via "Quit to Win" Contest 2026: Engagement-Focused GenAI-based Chatbot for Real-Time Smoking Cessation SupportWho this might be right forSmoking Cessation The University of Hong Kong 998
Not applicableEnded earlyNCT04572646What this trial is testingBenefit of Systematic Proposition of Nicotine Substitution for Patients Undergoing SurgeryWho this might be right forSmoking Cessation Groupe Hospitalier Mutualiste de Grenoble 20
Early research (Phase 1)Study completedNCT00340483What this trial is testingSmoking Cessation Aid for Young SmokersWho this might be right forSmoking Cessation Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) 291
Large-scale testing (Phase 3)Study completedNCT00843505What this trial is testingEvaluating a Telemedicine Smoking Cessation Program in Rural Primary Care PracticesWho this might be right forSmoking Kimber Richter, PhD, MPH, MA 566
Not applicableStudy completedNCT04707911What this trial is testingSocial Media Intervention to Stop Nicotine and Cannabis Vaping Among AdolescentsWho this might be right forVaping University of California, San Francisco 500