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ClinicalTrials.gov public records Last synced Oct 21, 2026, 7:42 AM EDT

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Showing 1–24 of 798 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Cigarette Smoking Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Developing and Testing Health Warning Labels on the ENDS Device

NCT04907136
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Preferred ENDS, Preferred ENDS with HWL
Other
Lead sponsor
Florida International University
Other
Eligibility
21 Years to 35 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 5, 2026 · Synced Oct 21, 2026, 7:42 AM EDT
Enrolling by invitation Phase 4 Interventional

Piloting Novel Interventional Strategies to Improve Nicotine Pouches as a Substitute for Smoking

NCT07625956
View directory record Official record
Conditions
Smoking ( Cigarette)
Interventions
Nicotine replacement therapy patches, Oral nicotine pouches
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Oct 21, 2026, 7:42 AM EDT
Recruiting Phase 2 Interventional

Breathe Easier With Tadalafil Therapy for Dyspnea in COPD-PH

NCT05937854
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Pulmonary Hypertension, Dyspnea
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
35 Years to 89 Years
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
5
States / cities
Aurora, Colorado • Decatur, Georgia • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated May 15, 2026 · Synced Oct 21, 2026, 7:42 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Neuro Biomarkers of Smoking Behavior

NCT03811951
View directory record Official record
Conditions
Smoking Cessation
Interventions
Novolin R
Drug
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
21 Years to 40 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 2, 2021 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparison of Nicotine Plasma Concentrations and Subjective Effects for Three Menthol Electronic Cigarettes vs Combustible Menthol Cigarettes and Nicotine Gum

NCT02664012
View directory record Official record
Conditions
Smoking
Interventions
Own Brand Menthol Cigarette, Electronic Menthol Cigarette #1, Electronic Menthol Cigarette #2, Electronic Menthol Cigarette #3, Leading U.S. Nicotine Gum
Other
Lead sponsor
R.J. Reynolds Vapor Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 4, 2018 · Synced Oct 21, 2026, 7:42 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

DECIDE: Developing Tools for Lung Cancer Screening Discussion Improvement

NCT03891602
View directory record Official record
Conditions
Smoking, Smoking, Tobacco, Smoking, Cigarette, Lung Cancer
Interventions
Cataldo Lung Cancer Stigma Scale (Smoking-Related Subscale), Patient Trust in the Medical, Decision Conflict Scale (DCS) - Lung Cancer Screening, Shared Decision Making Questionnaire (SDM-Q)- Patient, Stage of Readiness for Smoking Cessation - Contemplation Ladder, Primary Care Clinicians' Lung Cancer Screening Survey
Behavioral
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years to 80 Years
Enrollment
654 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 23, 2024 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Phase 2 Interventional

Acute Effects of Exercise in Smokers With Schizophrenia

NCT01635075
View directory record Official record
Conditions
Tobacco Dependence, Cigarette Craving, Smoking Behavior
Interventions
Exercise, passive control
Behavioral
Lead sponsor
Brown University
Other
Eligibility
18 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 28, 2015 · Synced Oct 21, 2026, 7:42 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Study to Determine the Effects of ENDS Flavor Availability on Abstinence Within Smokers

NCT07598136
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
P2613422, P2611222, P2615522, P2615122, P2615422
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 65 Years
Enrollment
1,280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
7
States / cities
Maitland, Florida • Atlanta, Georgia • St Louis, Missouri + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Characterization of Product Use in Smokers Switching From Cigarettes to a RELX Electronic Nicotine Delivery System

NCT04708106
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
RELX ENDS Tobacco Flavor, RELX ENDS Menthol Flavor, RELX ENDS Tobacco and Menthol Flavors
Other
Lead sponsor
Cheerain HK Limited
Industry
Eligibility
22 Years to 65 Years
Enrollment
194 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
5
States / cities
Bentonville, Arkansas • Lexington, Kentucky • Springfield, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2021 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Effects of Menthol in E-cigarettes on Smoking Behaviors

NCT04521647
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Nicotine
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Oct 21, 2026, 7:42 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Neurobehavioral Mechanisms Linking Childhood Adversity to Increased Risk for Smoking

NCT05665465
View directory record Official record
Conditions
Adverse Childhood Experiences, Nicotine Dependence, Cigarettes
Interventions
Nicotine nasal spray 0.5 mg, Placebo
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 21 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Results available

Financial Incentives for Smoking Cessation Among Mothers

NCT05740098
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Best Practices, Financial Incentives, Nicotine Replacement Therapy
Behavioral · Drug
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older · Female only
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jul 28, 2023 · Synced Oct 21, 2026, 7:42 AM EDT
Recruiting Phase 2 Interventional

GLP-1 Receptor Agonists to Decrease Ethanol and CVD Risk in HIV

NCT07221214
View directory record Official record
Conditions
HIV, Alcohol, Smoking Cigarette, Cardiovascular Disease Prevention
Interventions
Semaglutide (Rybelsus®), Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 89 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Environmental Emissions From Electronic Cigarettes and Tobacco-Burning Cigarettes

NCT02185898
View directory record Official record
Conditions
Smoking
Interventions
Leading U.S. non-menthol cigarette, Leading U.S. menthol cigarette, Electronic cigarette #1, Electronic cigarette #2, Electronic cigarette #3, U.S. Market-sample electronic cigarettes
Other
Lead sponsor
R.J. Reynolds Vapor Company
Industry
Eligibility
21 Years to 99 Years
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Stockbridge, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 1, 2018 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional

Influencer E-Cigarette and Cannabis Marketing: a Survey-Based Experiment Among Adolescents

NCT06919263
View directory record Official record
Conditions
Electronic Nicotine Delivery Systems
Interventions
Influencer marketing
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
16 Years to 17 Years
Enrollment
1,462 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 9, 2025 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Biomarkers of Exposure and Biomarkers of Potential Harm in Adult Smokers Who Completely Switch to E-vapor Products

NCT04800211
View directory record Official record
Conditions
Tobacco Use
Interventions
Experimental: Test Product 1, Experimental: Test Product 2
Other
Lead sponsor
Altria Client Services LLC
Industry
Eligibility
30 Years to 65 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
10
States / cities
Burbank, California • Wichita, Kansas • Lexington, Kentucky + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2025 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sensory Perception of Sweet Flavors in E-Cigarette

NCT03332953
View directory record Official record
Conditions
Smoking
Interventions
E-cigarettes with varying concentrations of nicotine & flavor
Other
Lead sponsor
Oregon State University
Other
Eligibility
18 Years to 35 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Corvallis, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 11, 2019 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Characterization of Nicotine Exposure and Urge-to-Smoke Following Use of Electronic and Conventional Cigarettes

NCT02210754
View directory record Official record
Conditions
Smoking
Interventions
blu™ Classic Tobacco rechargeable (2.4% nicotine, glycerin vehicle), blu™ Classic Tobacco rechargeable (2.4% nicotine, glycerin/PG vehicle), blu™ Magnificent Menthol rechargeable (2.4% nicotine, glycerin vehicle), blu™ Classic Tobacco rechargeable (1.6% nicotine, glycerin vehicle), blu™ Classic Tobacco rechargeable (1.6% nicotine, glycerin/PG vehicle), Marlboro Cigarette
Other
Lead sponsor
Lorillard Tobacco Company
Industry
Eligibility
21 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 7, 2014 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Characterize Nicotine Pharmacokinetics and Subjective Effects of Nicotine Pouches in Adult Cigarette Smokers

NCT04846088
View directory record Official record
Conditions
Tobacco Use, Tobacco Smoking
Interventions
Product A, Product B, Product C, Product D, Product E, Product F, Product G, Product H, Product I
Other
Lead sponsor
British American Tobacco (Investments) Limited
Industry
Eligibility
22 Years to 65 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 7, 2022 · Synced Oct 21, 2026, 7:42 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Nicotine Withdrawal and Reward Processing: Connecting Neurobiology to Real-world Behavior

NCT03840694
View directory record Official record
Conditions
Cigarette Smoking, Nicotine Withdrawal
Interventions
Smoking Abstinence, Ad Lib Smoking
Other
Lead sponsor
Duke University
Other
Eligibility
21 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 20, 2021 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Cigar Flavor in Dual Users

NCT04487470
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Flavored filtered cigars, Unflavored filtered cigars
Other
Lead sponsor
UConn Health
Other
Eligibility
21 Years to 34 Years
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional

Contingency Management and Pharmacotherapy for Smoking Cessation

NCT00683280
View directory record Official record
Conditions
Cigarette Smoking
Interventions
contingency management, Standard of Care
Behavioral · Other
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 16, 2018 · Synced Oct 21, 2026, 7:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Strengthening Instrumental Extinction to Prevent Smoking Relapse (VLNCCue)

NCT02538042
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (0.07 mg), MCE-
Drug · Behavioral
Lead sponsor
Francis McClernon, Ph.D.
Other
Eligibility
18 Years to 65 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 14, 2018 · Synced Oct 21, 2026, 7:42 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Mapping Brain Glutamate in Humans: Sex Differences in Cigarette Smokers

NCT05279053
View directory record Official record
Conditions
Sex, Cigarette Smoking
Interventions
Abstinence and Smoking
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 45 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 20, 2026 · Synced Oct 21, 2026, 7:42 AM EDT