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Showing 1–24 of 2,319 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 2 Interventional

Effects of Atomoxetine on Cognitive Function in Schizophrenia

NCT00420498
View directory record Official record
Conditions
Schizophrenia, Cognition, Smoking
Interventions
Atomoxetine (Strattera™)
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 59 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 11, 2007 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pro-Change Smoking Cessation Intervention

NCT02299076
View directory record Official record
Conditions
Tobacco Smoking Cessation, Motivation
Interventions
Behavioral economics incentives, Minimal incentives
Behavioral · Other
Lead sponsor
VAL Health, LLC
Industry
Eligibility
18 Years and older
Enrollment
422 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Old Greenwich, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 1, 2017 · Synced Sep 4, 2026, 4:38 AM EDT
Not yet recruiting Not applicable Interventional

Smoking Cessation Intervention for Young Adults Using MTM: A Randomized Controlled Trial

NCT07104006
View directory record Official record
Conditions
Tobacco Use Disorder/Cigarette Smoking
Interventions
Multi-Theory Model (MTM)-Based Smoking Cessation Program
Behavioral
Lead sponsor
University of Nevada, Las Vegas
Other
Eligibility
18 Years to 29 Years
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 10, 2025 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Motivating Change in Aging Smokers

NCT05194917
View directory record Official record
Conditions
Smoking Cessation
Interventions
Older Smoker Motivational Intervention, Control Motivational Message
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
50 Years to 80 Years
Enrollment
201 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Sep 4, 2026, 4:38 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Implementation and Effectiveness of the BJC-Pink and Pearl Project on Lung Cancer Screening

NCT06898333
View directory record Official record
Conditions
Lung Cancer, Cancer of the Lung
Interventions
Not listed
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
279 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Creve Coeur, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assess Biomarkers of Tobacco Exposure and Nicotine Pharmacokinetics in Smokers After a 5-Day In-Clinic Confinement Switch to an Electronic Cigarette or Nicotine Gum

NCT02323438
View directory record Official record
Conditions
Smoking
Interventions
Usual Brand Cigarette, Electronic Cigarette #1, Electronic Cigarette #2, Leading U.S. Nicotine Gum
Other
Lead sponsor
R.J. Reynolds Vapor Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
153 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 31, 2018 · Synced Sep 4, 2026, 4:38 AM EDT
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, 4:38 AM EDT
Completed Phase 4 Interventional Results available

Counseling and Nicotine Replacement Therapy in Helping Adult Smokers Quit Smoking

NCT00365508
View directory record Official record
Conditions
Bladder Cancer, Cervical Cancer, Esophageal Cancer, Gastric Cancer, Head and Neck Cancer, Kidney Cancer, Leukemia, Liver Cancer, Lung Cancer, Pancreatic Cancer, Tobacco Use Disorder
Interventions
nicotine lozenge, nicotine patch
Drug
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
18 Years and older
Enrollment
642 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
10
States / cities
Washington D.C., District of Columbia • Miami Beach, Florida • Augusta, Georgia + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 28, 2016 · Synced Sep 4, 2026, 4:38 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Sex Differences in the Vascular Effects of E-cigarette Use

NCT06159608
View directory record Official record
Conditions
E-cigarette Use
Interventions
Local heating + L-NAME (NG-nitro-L-arginine methyl ester; nitric oxide synthase inhibitor), Chronic estrogen exposure
Drug · Other
Lead sponsor
Anna Stanhewicz, PhD
Other
Eligibility
18 Years to 24 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Dec 14, 2025 · Synced Sep 4, 2026, 4:38 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, 4:38 AM EDT
Completed Phase 3 Interventional

An Open Label Study That Compares Varenicline to Transdermal Nicotine Patch for Smoking Cessation

NCT00143325
View directory record Official record
Conditions
Smoking Cessation
Interventions
varenicline (CP-526,555)
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
730 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
6
States / cities
Palo Alto, California • Santa Ana, California • Farmington, Connecticut + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2007 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Not applicable Interventional Results available

SmokefreeSGM, A Text-based Smoking Cessation Intervention for Sexual and Gender Minority Groups

NCT05029362
View directory record Official record
Conditions
Smoking Cessation
Interventions
SmokefreeSGM
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 19, 2025 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Not applicable Interventional

Clinical Effort Against Secondhand Smoke (CEASE) Program or Standard Care in Helping Parents Stop Smoking

NCT00664261
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
smoking cessation intervention, cancer prevention, counseling intervention, educational intervention, laboratory biomarker analysis, questionnaire administration, survey administration, study of high risk factors
Behavioral · Other · Procedure
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
Not listed
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 17, 2013 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Text Messaging to Promote Walking Among Latino Adults at Risk for Peripheral Arterial Disease

NCT02622282
View directory record Official record
Conditions
Peripheral Arterial Disease
Interventions
Text Messages, Phone Calls, Handout
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
50 Years and older
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Wichita, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 1, 2017 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacogenetics of Nicotine Metabolism in African-Americans

NCT00879918
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Deuterated nicotine and cotinine
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 23, 2013 · Synced Sep 4, 2026, 4:38 AM EDT
Recruiting Not applicable Interventional

Personalized Brain Stimulation to Help Veterans Quit Smoking

NCT07050862
View directory record Official record
Conditions
Tabacco Use Disorder, rTMS
Interventions
Transcranial Magnetic Stimulation, Personalized-image-guided and E-field-modeling dose rTMS (precision TMS)
Device
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 70 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Sep 4, 2026, 4:38 AM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

Wound Healing Following Extraction and Ridge Preservation in Smokers and Non-smokers

NCT07372183
View directory record Official record
Conditions
Smoking, Cigarette, Alveolar Bone Grafting, Wound Healing, Bone Healing, Tooth Extraction Site Healing
Interventions
observational study
Other
Lead sponsor
Marquette University
Other
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Sep 4, 2026, 4:38 AM EDT
Completed No phase listed Observational

African American Families and Lung Cancer Study

NCT00487760
View directory record Official record
Conditions
Lung Cancer
Interventions
Not listed
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 4, 2026, 4:38 AM EDT
Completed No phase listed Observational

Motivational Counseling in Preventing Smoking Relapse After Pregnancy in Pregnant Women Who Quit Smoking During Pregnancy

NCT00310115
View directory record Official record
Conditions
Bladder Cancer, Cervical Cancer, Esophageal Cancer, Gastric Cancer, Head and Neck Cancer, Kidney Cancer, Leukemia, Liver Cancer, Lung Cancer, Pancreatic Cancer, Tobacco Use Disorder
Interventions
Smoking Prevention Usual Care, Counseling Intervention
Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
469 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 22, 2016 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Phase 2 Interventional Results available

Efficacy of Centanafadine SR as a Potential Smoking Cessation Treatment

NCT05066724
View directory record Official record
Conditions
Smoking Cessation
Interventions
Centanafadine
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 12, 2025 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of e-Cigarettes on Perceptions and Behavior - Substudy 2

NCT05958966
View directory record Official record
Conditions
Electronic Cigarette Use, E-Cig Use, Cigarette Smoking, Cigarette Use, Electronic
Interventions
E-cigarette e-liquid self-administration
Other
Lead sponsor
University of Southern California
Other
Eligibility
21 Years and older
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Progesterone and Brain Imaging Study

NCT01954966
View directory record Official record
Conditions
Nicotine Dependence, Nicotine Withdrawal
Interventions
Progesterone, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 50 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 4, 2022 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Maintenance Treatment for Abstinent Smokers

NCT00063323
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Bupropion
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
21 Years to 75 Years
Enrollment
589 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 4, 2026, 4:38 AM EDT
Completed Not applicable Interventional

VIDeOS for Smoking Cessation

NCT06307496
View directory record Official record
Conditions
Cancer, Smoking Cessation
Interventions
Smoking cessation intervention, Informational intervention
Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Sep 4, 2026, 4:38 AM EDT