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Showing 1–24 of 227 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Smoking abstinence Clear all
Completed Phase 2 Interventional Accepts healthy volunteers

Maintaining Abstinence in Chronic Cigarette Smokers - 1

NCT00087880
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Bupropion and NRT
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years and older
Enrollment
407 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 24, 2026, 9:13 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Nicotine Withdrawal and Reward Processing: Connecting Neurobiology to Real-world Behavior

NCT03840694
View directory record Official record
Conditions
Cigarette Smoking, Nicotine Withdrawal
Interventions
Smoking Abstinence, Ad Lib Smoking
Other
Lead sponsor
Duke University
Other
Eligibility
21 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 19, 2021 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Smoking Abstinence and Lapse Effects in Smokers With Schizophrenia and Controls

NCT01214005
View directory record Official record
Conditions
Tobacco Use Disorder, Schizophrenia
Interventions
smoking abstinence
Behavioral
Lead sponsor
Brown University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 26, 2012 · Synced Sep 24, 2026, 9:13 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Mobile Media-Rich Interactive Guideline System (MMRIGS) Pilot Study

NCT02302859
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Nicotine Patch, Questionnaires, Pamphlet, Phone Counseling Sessions, Saliva Test, Smart phone
Drug · Behavioral · Other + 1 more
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 26, 2020 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Does Abstinence From E-cigarettes Produce Withdrawal Symptoms?

NCT02825459
View directory record Official record
Conditions
Substance Withdrawal Syndrome
Interventions
Abstinence from e-cigarettes
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
147 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Nov 19, 2018 · Synced Sep 24, 2026, 9:13 AM EDT
Recruiting Phase 4 Interventional

Varenicline for Smoking Reduction in Veterans Not Ready To Quit

NCT06966362
View directory record Official record
Conditions
Veterans, Tobacco Use Disorder, Cigarette Smoking, Tobacco Dependence
Interventions
Motivation-Phase Varenicline, Motivation-Phase Nicotine Mini-Lozenge, Cessation-Phase Combination Nicotine Replacement Therapy (NRT), Cessation-Phase Varenicline, Motivation-Phase Counseling, Cessation-Phase Counseling
Drug · Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
21 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
4
States / cities
San Diego, California • Minneapolis, Minnesota • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Not applicable Interventional

Enhancing Tobacco Abstinence Following Hospitalization

NCT00222703
View directory record Official record
Conditions
Hospitalized Smokers, Chronic Diseases, Tobacco Use Disorder
Interventions
Smoking relapse prevention
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 21, 2005 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Phase 4 Interventional Results available

Cannabis and Tobacco Co-use Study

NCT04228965
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Varenicline, Contingency Management, Counseling
Drug · Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 40 Years
Enrollment
181 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
3
States / cities
Charleston, South Carolina • Florence, South Carolina • Pickens, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 14, 2025 · Synced Sep 24, 2026, 9:13 AM EDT
Not listed Not applicable Interventional

Smoking Cessation for People Living With HIV/AIDS

NCT01965405
View directory record Official record
Conditions
HIV, AIDS, Nicotine Dependence
Interventions
Bupropion, Brief Counseling, High-magnitude prize contingency management, Monitored support to quit smoking, No additional treatment, Prize contingency management for abstinence, Low intensity prize contingency management
Drug · Behavioral
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 80 Years
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced Sep 24, 2026, 9:13 AM EDT
Terminated Phase 2 Interventional Results available

Effects of ABT-089 on Smoking Abstinence Symptoms and Reward

NCT01756053
View directory record Official record
Conditions
Nicotine Addiction
Interventions
ABT-089, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 28, 2014 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Efficacy of an Abstinence-Only HIV Risk-Reduction Intervention for Young African-American Adolescents

NCT00640653
View directory record Official record
Conditions
HIV Infections, Sexually Transmitted Diseases
Interventions
Abstinence-only HIV/STD risk-reduction intervention, Safer-sex-only HIV/STD risk-reduction intervention, Long comprehensive HIV/STD risk-reduction intervention, Short comprehensive HIV/STD risk-reduction intervention, Health promotion control intervention
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
Not listed
Enrollment
662 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2004
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 12, 2017 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Phase 4 Interventional Results available

Varenicline Effects In Schizophrenic Smokers

NCT00548470
View directory record Official record
Conditions
Schizophrenia, Tobacco Use Disorder, Nicotine Dependance
Interventions
Varenicline
Drug
Lead sponsor
Nathan Kline Institute for Psychiatric Research
Other
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 19, 2018 · Synced Sep 24, 2026, 9:13 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Helpers Program On-line Training on Smoking Relapse and Social Networks

NCT05641974
View directory record Official record
Conditions
Smoking, Cigarette Smoking
Interventions
Helpers Stay Quit Training
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 99 Years
Enrollment
940 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Quit and Win Contests to Improve Smoking Cessation Among College Students

NCT01096108
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Standard contest (1 month), Motivational and Problem-Solving, Extended Contests
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
1,318 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 21, 2014 · Synced Sep 24, 2026, 9:13 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Smoking Cessation CM for Veterans With or at Risk for Cancer

NCT06432985
View directory record Official record
Conditions
Tobacco Use Disorder, Substance Use Disorder
Interventions
Focus Group, Contingency Management, Behavioral Counseling (Cognitive Behavioral Therapy, CBT), TUD Treatment as Usual (TAU)
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2031
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Phase 2 Interventional Results available

Effect of Galantamine on Short-term Abstinence

NCT01669538
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Galantamine, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 60 Years
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 14, 2019 · Synced Sep 24, 2026, 9:13 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Dyadic Financial Incentive Treatments for Dual Smoker Couples

NCT06296849
View directory record Official record
Conditions
Smoking, Cigarette
Interventions
Financial Incentive Treatment (FIT)
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
2
States / cities
Athens, Georgia • Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 24, 2026, 9:13 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Take A Break - Rural

NCT05790486
View directory record Official record
Conditions
Smoking, Smoking Behaviors, Smoking Cessation
Interventions
Take a Break plus Nicotine replacement therapy (NRT) Sampling, The Comparison, Community Paramedicine Standard Plus Enhanced Implementation Program, Community Paramedicine Standard Implementation Program
Behavioral · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Neural Basis of Eating Behavior in Abstinent Smokers

NCT03438188
View directory record Official record
Conditions
Nicotine Use Disorder
Interventions
Practice Quit Attempt
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 45 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Phase 4 Interventional Results available

A Comparative Effectiveness RCT of Optimized Cessation Treatments

NCT02301403
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine patch, in-person counseling and quitline counseling, Preparation Nicotine Mini-Lozenges, Combination NRT (nicotine patch + nicotine mini-lozenges), Intensive In-Person Cessation Counseling, Extended Maintenance Counseling Calls, Automated Adherence Calls
Drug · Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
623 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 12, 2020 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Contingency Management for Smoking Cessation in Homeless Smokers

NCT01789710
View directory record Official record
Conditions
Smoking, Homeless Persons
Interventions
Bupropion, Nicotine replacement therapy, Contingency Management
Drug · Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Chicago Community Health Study

NCT04460417
View directory record Official record
Conditions
Smoking
Interventions
Enhanced Care, TAU
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 6, 2020 · Synced Sep 24, 2026, 9:13 AM EDT
Completed Phase 4 Interventional Results available

Pilot Study: Preoperative Nicotine Lozenges

NCT00586482
View directory record Official record
Conditions
Smoking
Interventions
Nicotine Lozenge, Placebo Lozenge, Abstinence Advisement
Drug · Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 21, 2014 · Synced Sep 24, 2026, 9:13 AM EDT
Recruiting Not applicable Interventional

Implementation of Tobacco Cessation Programming at Community Behavioral Health Sites

NCT06837220
View directory record Official record
Conditions
Nicotine Use Disorder, Smoking Cessation, Smoking Cessation Intervention
Interventions
Enhanced Courage to Quit
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 26 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 24, 2026, 9:13 AM EDT