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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Refrain from Smoking Clear all
Completed Phase 3 Interventional Results available

A Randomized Trial of Medi-Cal Beneficiaries Calling the California Smokers' Helpline

NCT01502306
View directory record Official record
Conditions
Smoking Cessation
Interventions
Telephone counseling, Nicotine patches, Incentive
Behavioral · Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
3,816 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2020 · Synced Sep 23, 2026, 2:37 PM EDT
Completed No phase listed Observational

Nicotinic Receptor Levels After Stopping Smoking

NCT01704573
View directory record Official record
Conditions
Nicotine Addiction
Interventions
2-[18F]-fluro-3-[2(S)-2-azethidinylmethoxy]-pyridine
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 15, 2017 · Synced Sep 23, 2026, 2:37 PM 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 23, 2026, 2:37 PM 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 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

E-cigarettes as a Harm Reduction Strategy

NCT06277271
View directory record Official record
Conditions
Smoking
Interventions
E-cigarette
Other
Lead sponsor
Prisma Health-Upstate
Other
Eligibility
21 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 30, 2024 · Synced Sep 23, 2026, 2:37 PM 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 23, 2026, 2:37 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Preventing Relapse Following Involuntary Smoking Abstinence

NCT01374724
View directory record Official record
Conditions
Smoking, Smoking Cessation
Interventions
Tobacco Use Ban, Tailored Pamphlet, Informational Pamphlet, Relapse Prevention Intervention
Behavioral
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years and older
Enrollment
23,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
2
States / cities
Memphis, Tennessee • Lackland Air Force Base, Texas
Source: ClinicalTrials.gov public record
Updated Oct 31, 2016 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Prefatory Study to Explore Changes in Nasal Mucociliary Clearance and to Standardize Nasal Scraping Procedure

NCT03086707
View directory record Official record
Conditions
Smokers, Never Smokers
Interventions
Cigarette
Other
Lead sponsor
Philip Morris Products S.A.
Industry
Eligibility
25 Years to 45 Years · Male only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
2
States / cities
Neptune City, New Jersey • Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 19, 2020 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional

Novel Treatment to Enhance Smoking Cessation Before Cancer Surgery

NCT02402023
View directory record Official record
Conditions
Smoking Cessation
Interventions
Contingency Management (CM), Standard of Care (SC)
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
2
States / cities
New Haven, Connecticut • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 8, 2020 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Smoking Environment on Craving and Smoking

NCT02416986
View directory record Official record
Conditions
Smoking
Interventions
6 hour smoking abstinence, Delay to Smoking Task (smoking cues), Delay to Smoking Task (nonsmoking cues)
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 55 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 30, 2017 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mobile Sensing of Smoking Behavior

NCT02116283
View directory record Official record
Conditions
Smoking, Health
Interventions
48 hour smoking abstinence, Smartphone
Behavioral · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 4, 2014 · Synced Sep 23, 2026, 2:37 PM EDT
Recruiting Not applicable Interventional

Contingency Management for Veteran Smokers Undergoing Major Elective Surgery

NCT06678672
View directory record Official record
Conditions
Tobacco Use Disorder, Substance Use Disorder (SUD)
Interventions
Contingency Management (CM), Treatment as Usual (TAU)
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional

Quitline Use in Surgical Patients

NCT00656500
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Standard brief advice, Quitline intervention
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 2, 2012 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Role of Contingency Management in Waterpipe Smoking Cessation

NCT02159092
View directory record Official record
Conditions
Waterpipe Smoking
Interventions
Contingency Management
Behavioral
Lead sponsor
Washington State University
Other
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Spokane, Washington
Source: ClinicalTrials.gov public record
Updated Dec 13, 2015 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Results available

Smoking Treatment and Exercise Program for Underserved Populations (STEP UP)

NCT02873754
View directory record Official record
Conditions
Smoking
Interventions
Cognitive Behavioral Counseling, Mobile Contingency Management, Bupropion, Transdermal nicotine patch, Nicotine polacrilex, Nicotine lozenge
Behavioral · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 70 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 12, 2018 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Neuroimaging Attentional Impairment During Abstinence

NCT00692406
View directory record Official record
Conditions
Smoking
Interventions
Smoking Abstinence
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 50 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 27, 2013 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Results available

Take a Break (TAB): mHealth-assisted Skills Building Challenge for Unmotivated Smokers

NCT02973425
View directory record Official record
Conditions
Smoking Cessation
Interventions
Take a Break as an augmentation to NRT-sampling in Motivation Phase, NRT and mHealth assessment tool without feedback
Behavioral
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years and older
Enrollment
433 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
4
States / cities
Worcester, Massachusetts • Great Neck, New York
Source: ClinicalTrials.gov public record
Updated Aug 10, 2022 · Synced Sep 23, 2026, 2:37 PM EDT
Terminated Not applicable Interventional Results available

Engaging Working Memory and Distress Tolerance to Aid Smoking Cessation

NCT03565497
View directory record Official record
Conditions
Smoking Cessation
Interventions
Wellness Education Control Condition, Mindfulness Training, Mindfulness Training Plus IE
Behavioral
Lead sponsor
Boston University Charles River Campus
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 16, 2023 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Results available

Addressing Psychological Risk Factors Underlying Smoking Persistence in COPD Patients: The Fresh Start Study

NCT04043728
View directory record Official record
Conditions
Copd, Smoking Cessation, Nicotine Dependence, Tobacco Use, Cigarette Smoking
Interventions
Unified Protocol adapted for smoking cessation
Behavioral
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 16, 2021 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional

Use of Technological Advances to Prevent Smoking Relapse Among Smokers With PTSD

NCT01990079
View directory record Official record
Conditions
PTSD, Smoking
Interventions
Bupropion, nicotine replacement therapy, Smoking cessation counseling, mobile contingency management, Stay Quit Coach
Drug · Other · Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 70 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Exercise on Acute Nicotine Withdrawal

NCT01047930
View directory record Official record
Conditions
Nicotine Dependence, Smoking, Sleep Disorders, Intrinsic
Interventions
Exercise
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 45 Years
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 1, 2014 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Music to Reduce Use of Smoking in Patients With Schizophrenia

NCT03190161
View directory record Official record
Conditions
Schizophrenia, Nicotine Dependence, Smoking, Tobacco
Interventions
Music session
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 14, 2019 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Randomized Trial of Internet Access to Nicotine Patches

NCT00534404
View directory record Official record
Conditions
Smoking Cessation, Tobacco Use Disorder
Interventions
Nicotine patches, Telephone counseling, iQuit Smoking website
Drug · Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
2,485 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 2, 2015 · Synced Sep 23, 2026, 2:37 PM EDT
Completed Phase 3 Interventional Results available

Providing Free Nicotine Patches to Quitline Smokers

NCT01736085
View directory record Official record
Conditions
Smoking Cessation
Interventions
Telephone counseling, Voucher, Nicotine patches
Behavioral · Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
3,706 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 18, 2020 · Synced Sep 23, 2026, 2:37 PM EDT