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ClinicalTrials.gov public records Last synced Oct 27, 2026, 3:02 PM EDT

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Showing 337–360 of 689 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Cigarette Use Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cigarette Smoking Decision Study

NCT04595279
View directory record Official record
Conditions
Tobacco Smoking
Interventions
Smoking sessions
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 29 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 15, 2025 · Synced Oct 27, 2026, 3:02 PM EDT
Recruiting Phase 2 Interventional

E-Cigarettes for Harm Reduction in Smokers With Opioid Use Disorder

NCT05722561
View directory record Official record
Conditions
Opioid Use Disorder, Cigarette Smoking
Interventions
Telehealth Motivational Counseling, Nicotine Replacement Product, National Institute on Drug Abuse (NIDA) Standardized Research Electronic Cigarette (SREC).
Behavioral · Drug · Device
Lead sponsor
NYU Langone Health
Other
Eligibility
21 Years to 75 Years
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
2
States / cities
New York, New York • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional

Effectiveness of an Enhanced Tobacco Intervention Protocol Compared to Standard Treatment in Helping Head and Neck and Lung Cancer Patients Starting Treatment to Reduce Cigarette Use

NCT04694846
View directory record Official record
Conditions
Lung Non-Small Cell Carcinoma, Head and Neck Squamous Cell Carcinoma
Interventions
Nicotine Replacement, Bupropion Hydrochloride Controlled-release, Varenicline, Tobacco Cessation Counseling, Questionnaire Administration, Quality of Life Assessment, Best Practice
Drug · Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 9, 2025 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Low Nicotine Content Cigarettes in Vulnerable Populations: Affective Disorders

NCT04090879
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Either normal nicotine content cigarettes (15.8mg/g) or reduced nicotine content cigarettes (0.4mg/g), E-Cigarettes
Other
Lead sponsor
Brown University
Other
Eligibility
18 Years to 70 Years
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
2
States / cities
Providence, Rhode Island • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Apr 1, 2025 · Synced Oct 27, 2026, 3:02 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Switch or Quit R01

NCT06373679
View directory record Official record
Conditions
Cigarette Smoking, Smoking Behaviors
Interventions
Switching to E-Cigarette, Switching using Medication
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
225 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sex Differences in E-cig Perception: Study 1

NCT05432830
View directory record Official record
Conditions
Nicotine Addiction, E-Cig Use, Cigarette Smoking, Sex Differences
Interventions
E-liquid Flavor 1, E-liquid Flavor 2, E-liquid Flavor 3
Other
Lead sponsor
Yale University
Other
Eligibility
21 Years to 44 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 27, 2026, 3:02 PM EDT
Not yet recruiting Phase 4 Interventional

Evaluating an Innovative Tobacco Treatment Approach for Veterans in Substance Use Treatment

NCT07809854
View directory record Official record
Conditions
Cigarette Smoking, Veterans
Interventions
Healthy Changes Nicotine Replacement Therapy (NRT), Cessation Treatment Nicotine Replacement Therapy (NRT), Cessation Treatment Counseling, Healthy Changes Counseling
Drug · Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2031
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reduced Nicotine Content Cigarettes in Smokers of Lower Socioeconomic Status

NCT01928719
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Reduced Nicotine Content Cigarettes, Same Nicotine Content Cigarettes
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 1, 2019 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effectiveness of Smoking Cessation Guidelines in the Emergency Department

NCT00756704
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Smoking cessation guideline implementation
Behavioral
Lead sponsor
University of Iowa
Other
Eligibility
18 Years and older
Enrollment
789 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
2
States / cities
Des Moines, Iowa • Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 4, 2011 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

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

NCT05958992
View directory record Official record
Conditions
Electronic Cigarette Use, Cigarette Smoking, Cigarette Use, Electronic, Vaping
Interventions
E-cigarette
Other
Lead sponsor
University of Southern California
Other
Eligibility
21 Years and older
Enrollment
461 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 25, 2023 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Results available

E-cigarettes to Promote Smoking Reduction Among Individuals With Schizophrenia

NCT02918630
View directory record Official record
Conditions
Tobacco Smoking
Interventions
Nicotine Patch, E-cigarette
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 65 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 5, 2018 · Synced Oct 27, 2026, 3:02 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

High Dose Bupropion for Smoking Cessation - Pilot Study

NCT03326128
View directory record Official record
Conditions
Smoking Cessation, Smoking, Tobacco, Smoking (Tobacco) Addiction, Cessation, Tobacco, Cigarette Smoking
Interventions
Bupropion Hydrochloride
Drug
Lead sponsor
University of Southern California
Other
Eligibility
21 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 17, 2023 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Expanding the Click City Tobacco Prevention Program to Include E-cigarettes and Other Novel Tobacco Products

NCT03682900
View directory record Official record
Conditions
Tobacco Use
Interventions
Click City®: Tobacco, Usual Tobacco Curriculum
Other
Lead sponsor
Oregon Research Behavioral Intervention Strategies, Inc.
Industry
Eligibility
9 Years to 12 Years
Enrollment
2,673 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Springfield, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 1, 2023 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

PACE Vape Messaging Study

NCT04450537
View directory record Official record
Conditions
Vaping, E-cigarette Use, Electronic Cigarette Use
Interventions
Vape Messaging Intervention
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 24 Years
Enrollment
569 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Nov 3, 2020 · Synced Oct 27, 2026, 3:02 PM EDT
Not listed Not applicable Interventional

The Effect of Electronic Cigarette Use on Smoking Behaviors Among Smokers Receiving Outpatient Psychiatric Treatment

NCT04014322
View directory record Official record
Conditions
Tobacco Smoking, Psychiatric Disorders
Interventions
E-cigarette
Other
Lead sponsor
Fordham University
Other
Eligibility
21 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 18, 2023 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Phase 2 Interventional Results available

Free Samples for Health

NCT05627596
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Ask-Advise-Refer, Nicotine Patch, 14 Mg/24 Hr Transdermal Film, Extended Release, Nicotine lozenge
Behavioral · Drug
Lead sponsor
Sandra Japuntich
Other
Eligibility
18 Years and older
Enrollment
1,239 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Randomized Controlled Trial to Evaluate the Impact of ZYN Nicotine Pouch Products on Cigarette Usage and BoExp in Adult Smokers Over a 12-week Period

NCT06568900
View directory record Official record
Conditions
Tobacco Use
Interventions
cigarette smoking, tobacco flavored and unflavored pouch, unrestricted flavor options pouch
Other
Lead sponsor
Swedish Match AB
Industry
Eligibility
22 Years to 65 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 23, 2024 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tobacco/Nicotine Purchase Patterns Across SES

NCT06795997
View directory record Official record
Conditions
Smoking Behaviors, Smoking, Non-Tobacco Products, Smoking, Cigarette
Interventions
Tax Conditions, Control Condition
Behavioral
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
18 Years and older
Enrollment
663 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated May 21, 2025 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Enhancing Smoking Cessation in the Homeless Population

NCT01932996
View directory record Official record
Conditions
Cigarette Smoking, Tobacco Smoking, Smoking, Tobacco
Interventions
nicotine patch plus nicotine gum/lozenge, Intensive Alcohol Intervention
Drug · Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 75 Years
Enrollment
352 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 19, 2020 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional

Study on Sit to Quit Phone Intervention

NCT02840435
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Sit to Quit, Quit for Life
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 13, 2019 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Mindfulness Training for Smokers Online Feasibility Study

NCT02164656
View directory record Official record
Conditions
Cigarette Smoking, Mindfulness
Interventions
mindfulness for smokers
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 12, 2015 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional

Effectiveness of an Integrated Treatment to Address Smoking Cessation and Anxiety/ Depression in People Living With HIV

NCT03904186
View directory record Official record
Conditions
Human Immunodeficiency Virus, Smoking Cessation, Smoking, Cigarette, Smoking, Anxiety, Depression, Nicotine Dependence
Interventions
QUIT, Time-Matched Control (TM)
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 79 Years
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
3
States / cities
Boston, Massachusetts • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Oct 27, 2026, 3:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Predictors and Consequences of Combustible Cigarette Smokers' Switch to Standardized Research E-Cigarettes

NCT03277495
View directory record Official record
Conditions
Tobacco Use
Interventions
Brief behavioral counseling
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
21 Years and older
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 27, 2026, 3:02 PM EDT
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 27, 2026, 3:02 PM EDT