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Showing 1–24 of 730 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Quit smoking Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Quit Smoking Study for People Who Use E-Cigarettes

NCT04946825
View directory record Official record
Conditions
Nicotine Addiction, E-Cig Use, Quitting Smoking
Interventions
Nicotine replacement therapy patch, Nicotine replacement therapy lozenge, Quit electronic cigarettes, Continue electronic cigarettes
Drug · Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 29 Years
Enrollment
396 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated May 21, 2025 · Synced Sep 2, 2026, 11:51 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 2, 2026, 11:51 AM EDT
Completed Phase 3 Interventional Results available

Smoking-Cessation and Stimulant Treatment (S-CAST)

NCT01077024
View directory record Official record
Conditions
Cocaine Dependence, Methamphetamine Dependence, Nicotine Dependence
Interventions
Smoking-cessation treatment
Other
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Enrollment
538 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
12
States / cities
Tucson, Arizona • Rancho Cucamonga, California • Tarzana, California + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2021 · Synced Sep 2, 2026, 11:51 AM EDT
Not listed Phase 3 Interventional

Motivating Smokers With Mobility Impairments to Quit Smoking

NCT01585610
View directory record Official record
Conditions
Smoking
Interventions
DVD Intervention, Standard Care Printed Materials
Behavioral
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years and older
Enrollment
560 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated May 13, 2015 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Phase 4 Interventional Results available

Smartphone Intervention for Smoking Cessation and Improving Adherence to Treatment Among HIV Patients

NCT03999411
View directory record Official record
Conditions
Smoking, Smoking Cessation, HIV
Interventions
Nicoderm C-Q Transdermal Product, Adherence to Antiretroviral Therapy Counseling, Behavioral Smoking Cessation Counseling, "Crave-to-Quit" app, vDOT "emocha" app
Drug · Behavioral
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 27, 2024 · Synced Sep 2, 2026, 11:51 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Testing an MBI for Smoking Cessation and Alcohol Use Among Cancer Survivors

NCT07447635
View directory record Official record
Conditions
Smoking Cessation, Alcohol Use
Interventions
Mindfulness-Based Relapse Prevention for Smoking and Alcohol (MBRP-SA), Quitline Support
Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Smoking Cessation Via Text Messaging: Feasibility Testing of Stop My Smoking USA

NCT01516632
View directory record Official record
Conditions
Smoking Cessation
Interventions
SMS USA
Behavioral
Lead sponsor
Center for Innovative Public Health Research
Other
Eligibility
18 Years to 25 Years
Enrollment
164 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Santa Ana, California
Source: ClinicalTrials.gov public record
Updated Jun 5, 2016 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Early Phase 1 Interventional

Informing the Adaptation of a CHW Model to Facilitate Lung Cancer Screening for the Chinese Community

NCT02914899
View directory record Official record
Conditions
Lung Cancer Screening, Current or Past Cigarette Smoker
Interventions
Surveys, Navigation, Focus groups, In-depth interviews
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
21 Years to 80 Years
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 20, 2025 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Project Impact 2: A Culturally Tailored Smoking Cessation Intervention for Latino Smokers

NCT02596711
View directory record Official record
Conditions
Tobacco Use Cessation, Cancer Prevention
Interventions
Nicotine Patch, Questionnaires, Carbon Monoxide (CO) Test, Health Education and Handouts, Culturally Tailored Reading Materials, Counseling Sessions
Drug · Behavioral · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 9, 2020 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Improving the Reach & Effectiveness of Smoking Cessation Services Targeted to Veterans Living With HIV

NCT04505371
View directory record Official record
Conditions
HIV Infections, Smoking, Smoking Cessation
Interventions
Wellness Intervention for Smokers with HIV
Behavioral
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years and older
Enrollment
235 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 2, 2026, 11:51 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 2, 2026, 11:51 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Usability and Pilot Testing - Intervention for Smoking Cessation

NCT02955095
View directory record Official record
Conditions
Smoking, Smoking Cessation
Interventions
Quit Smoking Phone Application
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 24 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 8, 2018 · Synced Sep 2, 2026, 11:51 AM EDT
Not listed Not applicable Interventional

Mobile Smoking Treatment for Spanish-speaking Latinx Smokers

NCT04417075
View directory record Official record
Conditions
Smoking Cessation
Interventions
Impacto (Mobile App), Dejar de Fumar Asistente (Mobile App)
Behavioral
Lead sponsor
University of Houston
Other
Eligibility
18 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 3, 2020 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Not applicable Interventional

Varenicline Tartrate With Telephone-Based Counseling and/or Internet-Based Counseling in Helping Adults Stop Smoking

NCT00301145
View directory record Official record
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
smoking cessation intervention, varenicline, counseling intervention, internet-based intervention
Behavioral · Drug · Other
Lead sponsor
SRI International
Industry
Eligibility
18 Years and older
Enrollment
1,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
3
States / cities
Menlo Park, California • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 18, 2013 · Synced Sep 2, 2026, 11:51 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 2, 2026, 11:51 AM EDT
Completed Early Phase 1 Interventional Results available

Feasibility of Delivering a Quitline Based Smoking Cessation Intervention in Cancer Patients

NCT01434342
View directory record Official record
Conditions
Lung Cancer, Tobacco Use Disorder, Breast Cancer, Colorectal Cancer, Prostate Cancer
Interventions
Nicotine Replacement Patch
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 27, 2021 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Not applicable Interventional

Vascular Physician Offer and Report (VAPOR) Trial

NCT02220686
View directory record Official record
Conditions
Peripheral Artery Disease (PAD)
Interventions
Offer and Report Protocol
Behavioral
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
8
States / cities
Gainesville, Florida • Chicago, Illinois • Shreveport, Louisiana + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2017 · Synced Sep 2, 2026, 11:51 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Electronic Health Record-Enabled Evidence-Based Smoking Cessation Quality Improvement Implementation Program

NCT04107857
View directory record Official record
Conditions
Smoking Cessation
Interventions
ELEVATE enhancement to electronic health record (EHR) to improve cessation counseling offer, ELEVATE enhancement to electronic health record (EHR) to improve smoking cessation medication offer, Data Driven Feedback reports
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
1,000,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Not applicable Interventional Results available

A Pilot Randomized Controlled Trial of Financial Incentives, Text Messaging, and Usual Care for Homeless Smokers

NCT02565381
View directory record Official record
Conditions
Smoking
Interventions
Transdermal nicotine patch, In-person smoking cessation counseling, Contingent financial rewards for smoking abstinence, Text messages to support smoking abstinence
Drug · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 13, 2017 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Phase 1Phase 2 Interventional

Positively Smoke Free on the Web (PSFW) for Smokers Living With HIV

NCT01570595
View directory record Official record
Conditions
Tobacco Use Cessation, Tobacco Cessation, Tobacco Use Disorder, Tobacco Dependence, Tobacco-Use Disorder, Virus, Human Immunodeficiency
Interventions
Web-Based Tailored Smoking Cessation Intervention, Standard of Care
Behavioral
Lead sponsor
Georgetown University
Other
Eligibility
18 Years and older
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 11, 2014 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Not applicable Interventional

Quit and Fit: Teen Smoking Cessation

NCT01242657
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Physical Activity Module, Not On Tobacco (N-O-T) Program
Behavioral
Lead sponsor
West Virginia University
Other
Eligibility
14 Years to 18 Years
Enrollment
236 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Nov 5, 2017 · Synced Sep 2, 2026, 11:51 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Optimizing Technology-Delivered Interventions for Smoking in Pregnancy: The Mommy Check-Up Study.

NCT02340624
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Referral to SmokeFreeMoms, Quitline or Brief intervention
Behavioral
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 15, 2015 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Empower Korean Families to End Tobacco Use & Smoking Exposure

NCT04079569
View directory record Official record
Conditions
Smoking Cessation, Lifestyle Risk Reduction
Interventions
Tobacco, Healthy Living
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
San Leandro, California
Source: ClinicalTrials.gov public record
Updated Apr 7, 2021 · Synced Sep 2, 2026, 11:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Smartphone-based Financial Incentives

NCT03922360
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Smartphone-based Financial Incentives, Best Practices
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Sep 2, 2026, 11:51 AM EDT