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Showing 1–24 of 92 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Smoking Abstinence Clear all
Completed No phase listed Observational Accepts healthy volunteers

Neuroimaging of Smokers With and Without Attention Deficit Hyperactivity Disorder (ADHD)

NCT01123668
View directory record Official record
Conditions
Smoking, ADHD
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years to 50 Years
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 7, 2018 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Phase 3 Interventional

Efficacy and Safety of Rimonabant as an Aid to Smoking Cessation With or Without Nicotine Patch

NCT00458718
View directory record Official record
Conditions
Smoking Cessation
Interventions
rimonabant (SR141716)
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
755 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 19, 2009 · Synced Sep 4, 2026, 2:51 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Working Inside for Smoking Elimination

NCT01122589
View directory record Official record
Conditions
Cigarette Smoking, Tobacco Smoking
Interventions
Motivational Interviewing/CBT, CONcise Tapes Reviewing Obstacles to healthy Living (CONTROL)
Behavioral · Other
Lead sponsor
Memorial Hospital of Rhode Island
Other
Eligibility
18 Years and older
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Pawtucket, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 8, 2010 · Synced Sep 4, 2026, 2:51 AM EDT
Completed No phase listed Observational

Study of Smoking Abstinence

NCT01035632
View directory record Official record
Conditions
Substance Abuse Disorders
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Phase 3 Interventional

A Second Study of NicVAX/Placebo as an Aid for Smoking Cessation

NCT01102114
View directory record Official record
Conditions
Smoking Cessation
Interventions
NicVAX Vaccine, Placebo Vaccine
Biological
Lead sponsor
Nabi Biopharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
25
States / cities
Encino, California • Los Alamitos, California • Denver, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated May 8, 2012 · Synced Sep 4, 2026, 2:51 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Duration of Behavioral Counseling Treatment Needed to Optimize Smoking Abstinence

NCT01038414
View directory record Official record
Conditions
Tobacco Addiction
Interventions
Extended Duration Behavioral Smoking Cessation Counseling
Behavioral
Lead sponsor
Harvard University Faculty of Medicine
Other
Eligibility
18 Years to 80 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 22, 2011 · Synced Sep 4, 2026, 2:51 AM EDT
Not yet recruiting Not applicable Interventional

Abstinence Reinforcement Therapy for Veterans Who Smoke Tobacco and Are Experiencing Homelessness

NCT07714200
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Cognitive Behavioral Therapy for Smoking Cessation, Nicotine Replacement Therapy, Bupropion, Varenicline, Mobile Contingency Management, Clinic-Based Smoking Cessation Counseling
Behavioral · Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2030
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Not applicable Interventional

Web and Mobile Smoking Cessation

NCT01952236
View directory record Official record
Conditions
Smoking
Interventions
Web+Mobile, Web Only
Behavioral
Lead sponsor
Oregon Research Institute
Other
Eligibility
18 Years and older
Enrollment
1,266 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 11, 2019 · Synced Sep 4, 2026, 2:51 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Multi-Site Study to Assess the Effect of Availability of a Heated Tobacco Product on Smoking Abstinence Among Current Primary Cigarette Smokers

NCT07710820
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
31237616, 31237617, 31237571, 31237581
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 65 Years
Enrollment
1,060 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
9
States / cities
Brandon, Florida • Coral Springs, Florida • Aurora, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

S-Adenosyl-L-Methionine (SAMe) for Smoking Abstinence

NCT00722124
View directory record Official record
Conditions
Tobacco Dependence
Interventions
S-Adenosyl-L-Methionine, placebo
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
2
States / cities
Rochester, Minnesota • La Crosse, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 8, 2011 · Synced Sep 4, 2026, 2:51 AM EDT
Recruiting Phase 2 Interventional

The Potential of Kava in Enabling Tobacco Cessation - Its Holistic Effects in Managing Stress and Insomnia Associated With Abstinence

NCT05814055
View directory record Official record
Conditions
Smoking
Interventions
Placebo, AB-free kava
Drug
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 75 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Phase 3 Interventional Results available

Smoking Cessation for Adults With Attention Deficit Hyperactivity Disorder (ADHD)

NCT00253747
View directory record Official record
Conditions
ADHD, Smoking
Interventions
Osmotic-Release Methylphenidate, Placebo
Drug
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years to 55 Years
Enrollment
255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
6
States / cities
Cambridge, Massachusetts • Rochester, Minnesota • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 16, 2012 · Synced Sep 4, 2026, 2:51 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Smoking, Stress & Allopregnanolone Response

NCT02087800
View directory record Official record
Conditions
Smoking Cessation
Interventions
F phase lab session, L phase lab session
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 29, 2015 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

BRP1802 Smoking Abstinence Study

NCT04979013
View directory record Official record
Conditions
Smoking, Smoking Cessation, Tobacco Use
Interventions
Smoking Abstinence
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
24 Years to 60 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced Sep 4, 2026, 2:51 AM EDT
Active, not recruiting No phase listed Observational Results available

Evaluation of a Smoking Cessation Program for Long-Term Abstinence

NCT06746025
View directory record Official record
Conditions
Nicotine Addiction, Smoking Cessation
Interventions
Quit Center cessation program
Behavioral
Lead sponsor
Quit Center LLC
Industry
Eligibility
18 Years and older
Enrollment
371 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Naples, Florida
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Not applicable Interventional

Smokers' Quitline for Asian Language Speakers

NCT01248832
View directory record Official record
Conditions
Smoking Cessation
Interventions
Telephone Counseling, Self-Help Materials
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 75 Years
Enrollment
2,277 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2020 · Synced Sep 4, 2026, 2:51 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Improving Smoking Abstinence Outcomes in the African American Community Through Extended Treatment

NCT05732272
View directory record Official record
Conditions
Smoking Cessation
Interventions
Bupropion
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Phase 4 Interventional

Smoking Study With Behavioral Therapy for Hypertensive Patients

NCT00879177
View directory record Official record
Conditions
Cigarette Smoking, Hypertension
Interventions
Varenicline, behavioral therapy
Drug · Behavioral
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 9, 2017 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Phase 2 Interventional Results available

Effect of Galantamine on Smoking Abstinence

NCT01548638
View directory record Official record
Conditions
Nicotine Addiction
Interventions
Galantamine ER
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 60 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 25, 2017 · Synced Sep 4, 2026, 2:51 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 4, 2026, 2:51 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 4, 2026, 2:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Trial of Using SmokeBeat to Monitor and Increase Smoking Abstinence in Pregnant Women

NCT03209557
View directory record Official record
Conditions
Tobacco Use Cessation, Pregnancy Related
Interventions
SmartWatch SmokeBeat Application
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
Female only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 8, 2019 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Not applicable Interventional Results available

Effect of Smoking Exposure on Smoking Relapse Following Brief Abstinence - 2

NCT00136838
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Neutral or active cigarette cues
Behavioral
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 17, 2018 · Synced Sep 4, 2026, 2:51 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Brain Imaging in Tobacco Smokers During a Quit Attempt

NCT04055467
View directory record Official record
Conditions
Tobacco Use Disorder, Tobacco Smoking
Interventions
[F18]-ASEM (3-(1,4-diazabicyclo[3.2.2]nonan-4-yl)-6-[18F]fluorodibenzo[b,d]thiophene 5,5-dioxide), Contingency Management
Drug · Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 5, 2024 · Synced Sep 4, 2026, 2:51 AM EDT