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ClinicalTrials.gov public records Last synced Oct 17, 2026, 9:58 PM EDT

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Showing 1–24 of 729 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Quit smoking Clear all
Completed Not applicable Interventional Accepts healthy volunteers

OCAST Cessation Study

NCT01921439
View directory record Official record
Conditions
Tobacco Smoking Behavior, Cigarette Smoking Behavior, Second Hand Tobacco Smoke, Tobacco Use Cessation
Interventions
Personalized Feedback
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 65 Years
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 11, 2017 · Synced Oct 17, 2026, 9:58 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Switching to E-cigarettes in Smokers Not Interested in Quitting

NCT05703672
View directory record Official record
Conditions
Smoking Reduction
Interventions
Varenicline Tartrate, Placebo, Electronic cigarette
Drug · Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
2
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 17, 2026, 9:58 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

STEPS: Substance Use Trial of E-cigarettes or Pharmacotherapy for Smoking

NCT06922617
View directory record Official record
Conditions
Tobacco Use, Substance Use Disorders
Interventions
Switching to E-Cigarette, Quitting using Medication, Counseling
Behavioral · Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
4
States / cities
Charleston, South Carolina • Conway, South Carolina • Greenville, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 17, 2026, 9:58 PM EDT
Recruiting Phase 3 Interventional

Reaching Rural Cancer Survivors Who Smoke Using Text-Based Program

NCT05008848
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Smoking Cessation Intervention, Health Promotion and Education, Informational Intervention, Questionnaire Administration
Behavioral · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
223
States / cities
Kingman, Arizona • Fort Smith, Arkansas • St. Helena, California + 186 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Phase 2 Interventional Results available

Suvorexant to Reduce Symptoms of Nicotine Use

NCT04234997
View directory record Official record
Conditions
Smoking Cessation
Interventions
Suvorexant 20 mg, Suvorexant 0mg
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 1, 2025 · Synced Oct 17, 2026, 9:58 PM EDT
Withdrawn Not applicable Interventional

JeffQuit Group Therapy Program for Smoking Cessation in Patients With a History of Cancer

NCT02591433
View directory record Official record
Conditions
Current Smoker, Malignant Neoplasm
Interventions
Tobacco Cessation Counseling, Support Group Therapy, Quality-of-Life Assessment
Other
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 1, 2025 · Synced Oct 17, 2026, 9:58 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

Centralized Lung Cancer EARly Detection Among Smokers (CLEAR Study)

NCT04200534
View directory record Official record
Conditions
Smoking, Lung Cancer
Interventions
Best Practice, Nicotine Patch, Quality-of-Life Assessment, Questionnaire Administration, Tobacco Cessation Counseling
Other · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
55 Years to 77 Years
Enrollment
358 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
3
States / cities
Galveston, Texas • Houston, Texas • Tyler, Texas
Source: ClinicalTrials.gov public record
Updated Aug 22, 2025 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Phase 4 Interventional Results available

Stress Neuroadaptation in Tobacco Dependence

NCT03262233
View directory record Official record
Conditions
Nicotine Dependence
Interventions
nicotine, placebo
Combination Product · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 60 Years
Enrollment
226 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 23, 2019 · Synced Oct 17, 2026, 9:58 PM 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 8, 2024 · Synced Oct 17, 2026, 9:58 PM EDT
Not listed Not applicable Interventional

Smoking Cessation for People Living With HIV/AIDS

NCT01965405
View directory record Official record
Conditions
HIV, AIDS, Nicotine Dependence
Interventions
Bupropion, Brief Counseling, High-magnitude prize contingency management, Monitored support to quit smoking, No additional treatment, Prize contingency management for abstinence, Low intensity prize contingency management
Drug · Behavioral
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 80 Years
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 2, 2021 · Synced Oct 17, 2026, 9:58 PM EDT
Active, not recruiting Not applicable Interventional

A Study for Cardiovascular and Lifestyle Risk Factors in Prostate Cancer Patients

NCT03127631
View directory record Official record
Conditions
Prostate Cancer, Cardiovascular Disease
Interventions
Nutrition, Exercise, Smoking cessation, Statin (such as Simvastatin, Atorvastatin, Rosuvastatin, Pravastatin), ACE inhibitor
Behavioral · Drug
Lead sponsor
McMaster University
Other
Eligibility
45 Years and older · Male only
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2026
U.S. locations
4
States / cities
Augusta, Georgia • Kansas City, Kansas • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2026 · Synced Oct 17, 2026, 9:58 PM EDT
Completed No phase listed Observational

Evaluation of Cardiovascular Effects of Smoking Cessation in HIV Patients

NCT00918073
View directory record Official record
Conditions
HIV Infections, Smokers
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
16 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 7, 2013 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Phase 2 Interventional

Treatment to Quit Smoking

NCT00018161
View directory record Official record
Conditions
Smoking
Interventions
Mecamylamine, Nicotine Patch, Cigarette brand switching
Drug · Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2001
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 21, 2009 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Internet Stop Smoking Study - Phase VI

NCT00721786
View directory record Official record
Conditions
Smoking
Interventions
UCSF/SFGH Internet Stop Smoking Study site
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
18,154 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 15, 2018 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Not applicable Interventional Results available

Integrating Use of Self-Affirmation Content Into a Mobile App to Promote Quit Attempts With Text-Based Smoking Cessation Intervention Messaging

NCT03027466
View directory record Official record
Conditions
Number of Quit Attempts
Interventions
Self-affirmation induction
Behavioral
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 99 Years
Enrollment
7,899 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 23, 2021 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Not applicable Interventional

Integrating the Quit and Stay Quit Monday Model Into Smoking Cessation Services for Smokers With Mental Health Conditions

NCT04512248
View directory record Official record
Conditions
Smoking Cessation
Interventions
Quit and Stay Quit Monday Model
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 5, 2022 · Synced Oct 17, 2026, 9:58 PM EDT
Terminated Not applicable Interventional

Pregnancy, Mindfulness, and Massage

NCT03276208
View directory record Official record
Conditions
Tobacco Use, Pregnancy Related
Interventions
Prenatal Massage, Mindfulness
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older · Female only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 29, 2020 · Synced Oct 17, 2026, 9:58 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Treating Adults at Risk for Weight Gain With Interactive Technology

NCT01199185
View directory record Official record
Conditions
Smoking, Body Weight
Interventions
Smoking Cessation, Smoking Cessation plus Weight Loss
Behavioral
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years to 35 Years
Enrollment
330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 18, 2013 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Phase 4 Interventional Results available

A Comparative Effectiveness & Long Term Health Study in Wisconsin Smokers

NCT01553084
View directory record Official record
Conditions
Smoking Cessation, Smoking, Nicotine Dependence
Interventions
Varenicline, Nicotine lozenge, Nicotine Patch
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
1,086 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 2, 2020 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Not applicable Interventional Results available

Study Two on the Effectiveness of Mindfulness Training for Smokers

NCT01299909
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Integrated Training for Smokers, Mindfulness Training for Smokers, Quitline
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 27, 2019 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Not applicable Interventional

A Usability Study of a Smoking Cessation Decision Aid in People With a Recent First Episode of Psychosis

NCT01399112
View directory record Official record
Conditions
Smoking, Psychosis
Interventions
Web-based computer program
Behavioral
Lead sponsor
Northwell Health
Other
Eligibility
15 Years to 30 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Glen Oaks, New York
Source: ClinicalTrials.gov public record
Updated Jan 3, 2013 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

En Pareja: A Latino Couples Intervention to Help Expectant Fathers Quit Smoking

NCT01040949
View directory record Official record
Conditions
Smoking Cessation
Interventions
couple-based counseling for smoking cessation plus self-help smoking cessation guide, Guia -a self help smoking cessation guide
Behavioral
Lead sponsor
Duke University
Other
Eligibility
16 Years and older
Enrollment
705 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 18, 2013 · Synced Oct 17, 2026, 9:58 PM EDT
Completed Phase 4 Interventional Results available

Evaluation of Treatments to Improve Smoking Cessation Medication Adherence

NCT01120704
View directory record Official record
Conditions
Smoking, Smoking Cessation, Adherence, Nicotine Dependence, Motivation
Interventions
Short Term Combination Nicotine Replacement Therapy (patch + gum), Long Term Combination Nicotine Replacement Therapy (patch + gum), Intensive Maintenance Counseling, Cognitive Medication Adherence Counseling (CAM), Electronic Medication Monitoring Device (the Helping Hand) + Feedback, Automated Adherence Prompting Phone Calls
Drug · Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
544 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 11, 2015 · Synced Oct 17, 2026, 9:58 PM EDT
Terminated Phase 3 Interventional Results available

Study to Determine if a New Nicotine Replacement Therapy Can Safely Help Smokers to Quit Smoking

NCT01296698
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Placebo, Nicotine
Drug
Lead sponsor
McNeil Consumer Healthcare Division of McNEIL-PPC, Inc.
Industry
Eligibility
18 Years and older
Enrollment
257 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
19
States / cities
Muscle Shoals, Alabama • Oceanside, California • Griffin, Georgia + 16 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2012 · Synced Oct 17, 2026, 9:58 PM EDT