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Showing 1–24 of 414 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Smoking Dependence Clear all
Completed Phase 3 Interventional Accepts healthy volunteers

Bupropion Treatment for Youth Smoking Cessation

NCT00344695
View directory record Official record
Conditions
Nicotine Dependence
Interventions
bupropion SR
Drug
Lead sponsor
University of Arizona
Other
Eligibility
14 Years to 17 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2003
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 26, 2006 · Synced Sep 10, 2026, 3:30 AM EDT
Active, not recruiting Phase 3 Interventional

Optimizing Tobacco Use Treatment for PLWHA

NCT04176172
View directory record Official record
Conditions
HIV/AIDS, Nicotine Dependence
Interventions
Varenicline, Nicotine patch, Standard treatment, Standard treatment + Managed Problem Solving (MAPS) adherence intervention
Drug · Behavioral
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
2
States / cities
Chicago, Illinois • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Phase 1 Interventional Results available

Improving Functional Outcomes of Veterans With PTSD and Tobacco Dependence

NCT02576899
View directory record Official record
Conditions
Tobacco, Posttraumatic Stress Disorder
Interventions
Acceptance and Commitment Therapy for PTSD and Tobacco Use, Freedom From Smoking
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Bedford, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 9, 2020 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Establishing the Effect of Flavor on the Addictive Potential of Electronic Cigarettes

NCT03905928
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Nicotine Containing ECIG with tobacco flavor, Nicotine Containing ECIG with Strawberry Vanilla Flavor, Placebo ECIG with Tobacco Flavor, Placebo ECIG with Strawberry Vanilla Flavor
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
21 Years to 60 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 21, 2025 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Varenicline on Brain Activity During Nicotine Abstinence

NCT00602927
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Varenicline, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 9, 2011 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Phase 4 Interventional Results available

Smoking Cessation Medications: Efficacy, Mechanisms and Algorithms

NCT00332644
View directory record Official record
Conditions
Nicotine Dependence
Interventions
nicotine patch, nicotine lozenge, nicotine patch + nicotine lozenge, bupropion, bupropion + lozenge, placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1,504 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 29, 2011 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Not applicable Interventional Results available

Improving Tobacco Treatment Rates for Outpatient Cancer Patients Who Smoke

NCT04737031
View directory record Official record
Conditions
Cancer, Smoking, Tobacco Use, Nicotine Dependence
Interventions
Clinician Nudge, Patient Nudge
Other
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
Not listed
Enrollment
2,146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
3
States / cities
Lancaster, Pennsylvania • Philadelphia, Pennsylvania • West Chester, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 12, 2024 · Synced Sep 10, 2026, 3:30 AM EDT
Active, not recruiting Not applicable Interventional

Electronic Cigarettes and Reactivity to Smoking Cues

NCT01782599
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Dual nicotine patch and electronic cigarette
Other
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2027
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 10, 2026, 3:30 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Equitable Smoking Relapse Prevention

NCT05625685
View directory record Official record
Conditions
Tobacco Use Disorder, Tobacco Dependence
Interventions
Quitbuddy, Control, SDoH Augmentation, SDoH Control
Other
Lead sponsor
Bryan W. Heckman
Other
Eligibility
21 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 7, 2024 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Yoga as a Complementary Therapy for Smoking Cessation

NCT01809678
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Smoking Cessation, Yoga, Wellness
Behavioral · Other
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
255 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jul 18, 2021 · Synced Sep 10, 2026, 3:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Clinical Learning Study for a Mobile Smoking Cessation Program

NCT04857515
View directory record Official record
Conditions
Smoking Cessation, Smoking Behaviors, Smoking Reduction, Smoking, Cigarette, Smoking, Nicotine Dependence
Interventions
Clickotine®
Device
Lead sponsor
Click Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 16, 2021 · Synced Sep 10, 2026, 3:30 AM EDT
Terminated No phase listed Observational

Study on Smoking Cessation and Cost Outcomes in the Duke Smoking Cessation Program

NCT02845687
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
209 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 12, 2019 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Impact of Smoking Cessation on Sleep - 5

NCT00132821
View directory record Official record
Conditions
Tobacco Use Cessation, Sleep Disorders
Interventions
Bupropion, Transdermal Nicotine Patch, Placebo Bupropion, Placebo transdermal nicotine patch
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 65 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Menlo Park, California
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy of Varenicline in Ambivalent Smokers

NCT00595868
View directory record Official record
Conditions
Tobacco Use Disorder, Tobacco Use Cessation, Nicotine Dependence
Interventions
Varenicline, Placebo
Drug
Lead sponsor
University of Vermont Medical Center
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
2
States / cities
Omaha, Nebraska • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Dec 1, 2011 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Phase 3 Interventional Results available

Extended Varenicline Treatment for Smoking Among Cancer Patients

NCT01756885
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Varenicline, Placebo, Smoking Cessation Counseling
Drug · Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
207 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
2
States / cities
Chicago, Illinois • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 29, 2019 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Personalized Feedback for Smokers With Elevated Anxiety Sensitivity

NCT03382093
View directory record Official record
Conditions
Anxiety Disorders, Anxiety, Tobacco Dependence, Smoking, Cigarette, Smoking, Tobacco
Interventions
Personalized Feedback Intervention, Smoking Information Control
Behavioral
Lead sponsor
University of Houston
Other
Eligibility
18 Years to 65 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 18, 2019 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Topiramate Alone and in Combination With the Nicotine Patch for Smoking Cessation: A Pilot Study

NCT00755716
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Placebo (sugar pill), Topiramate, Nicotine patch
Drug
Lead sponsor
UConn Health
Other
Eligibility
18 Years to 65 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2013
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 15, 2017 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Phase 1Phase 2 Interventional

The Role of Nicotine and Non-Nicotine Alkaloids in E-Cigarette Use and Dependence

NCT02590393
View directory record Official record
Conditions
Nicotine Dependence
Interventions
E-cigarettes
Combination Product
Lead sponsor
Duke University
Other
Eligibility
21 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 20, 2024 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Low Nicotine Content Cigarettes in Vulnerable Populations: Women of Reproductive Age

NCT04092387
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Varying the nicotine content of cigarettes, E-Cigarettes
Other
Lead sponsor
University of Vermont
Other
Eligibility
21 Years to 44 Years · Female only
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Mar 17, 2025 · Synced Sep 10, 2026, 3:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Assessment of Craving in Nicotine-Dependent Patients With Schizophrenia Using Virtual Reality

NCT01031433
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 55 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 11, 2019 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Phase 2 Interventional Results available

Pilot Study of Tolcapone in Smokers

NCT01202955
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Tolcapone, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 55 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 11, 2018 · Synced Sep 10, 2026, 3:30 AM EDT
Completed No phase listed Observational

Breath Carbon Monoxide and Cotinine as Biomarkers to Distinguish Smokers From Nonsmokers

NCT01031121
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 64 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 10, 2026, 3:30 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Vaping High vs. Low Nicotine E-Liquid

NCT04047836
View directory record Official record
Conditions
Cardiovascular Risk Factor, Nicotine Dependence
Interventions
Low Nicotine E-Liquid, Medium or High Nicotine E-Liquid
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 70 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 21, 2023 · Synced Sep 10, 2026, 3:30 AM EDT
Completed Not applicable Interventional Results available

Trial on the Effectiveness of Mindfulness Training for Smokers

NCT01093599
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Quit Line plus MTS, Quit Line Only
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
196 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 19, 2015 · Synced Sep 10, 2026, 3:30 AM EDT