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ClinicalTrials.gov public records Last synced Oct 9, 2026, 9:53 AM EDT

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Showing 1–24 of 67 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Tobacco and non-tobacco e-cigarettes Clear all
Completed No phase listed Observational Accepts healthy volunteers

Cannabis Effects on Brain Morphology in Aging

NCT01874886
View directory record Official record
Conditions
Study Focuses on Brain Morphology and Cognition in Older Subjects
Interventions
Not listed
Lead sponsor
University of California, Los Angeles
Other
Eligibility
60 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 3, 2020 · Synced Oct 9, 2026, 9:53 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Guiding Good Choices for Health

NCT04040153
View directory record Official record
Conditions
Adolescent Substance Use
Interventions
Guiding Good Choices
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
11 Years to 12 Years
Enrollment
3,636 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
3
States / cities
Oakland, California • Aurora, Colorado • Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 3, 2024 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

JUUL vs. Mod E-cigarette Study

NCT04237272
View directory record Official record
Conditions
Smoking, Tobacco Use
Interventions
Pod System E-cig, Customizable Tank E-cig, Control
Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 21, 2022 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Very Low Nicotine Content Cigarettes and E-Cigarettes in Promoting Smoking Cessation in Daily and Intermittent Cigarette Smokers

NCT02964182
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma, Tobacco-Related Carcinoma
Interventions
Cigarette, Nicotine Replacement, Questionnaire Administration, Survey Administration, Very Low Nicotine Content Cigarette, ECIG-Hi, ECIG-Lo
Drug · Other · Device
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
21 Years to 65 Years
Enrollment
213 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Oct 9, 2026, 9:53 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Comprehensive Evaluation of Tobacco-Flavored vs. Non-Tobacco Flavored E-cigarettes on Smoking Behavior

NCT06260683
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Nicotine Replacement, Questionnaire Administration, Vaping
Drug · Other · Device
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
1,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Delivery From Novel Non-Tobacco Electronic System in Smokers

NCT02575885
View directory record Official record
Conditions
Cigarette Smoker, Current Smoker, Healthy Subject
Interventions
Electronic Cigarette, Laboratory Biomarker Analysis, Pharmacological Study, Questionnaire Administration
Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 12, 2018 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Appeal and Impact of E-cigarettes in Smokers With SMI

NCT03050853
View directory record Official record
Conditions
Tobacco Dependence, Schizophrenia, Bipolar Disorder, Schizoaffective Disorder
Interventions
E-cigarette
Behavioral
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
2
States / cities
Louisville, Kentucky • Lawrence, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 29, 2021 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Phase 2 Interventional Results available

The Role of Nicotine Dose and Route of Delivery in Affecting Adoption of E-cigarettes and Reducing Exposure to Toxic Combustion Products

NCT03492463
View directory record Official record
Conditions
Nicotine Dependence, Cigarettes
Interventions
Nicotine patch, Placebo patch, E-cigarettes, Non-nicotine e-cigarettes
Drug · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 8, 2023 · Synced Oct 9, 2026, 9:53 AM 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 9, 2026, 9:53 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Impact of Alternative Nicotine-Delivery Products on Combustible Cigarette Use

NCT04084210
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Juul Electronic cigarette, Very Low Nicotine Cigarettes, Active Nicotine Patch, Placebo Patch
Device · Other · Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years and older
Enrollment
209 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 25, 2023 · Synced Oct 9, 2026, 9:53 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers

Evaluate Harm Reduction Products as a Second Line Intervention for Adult Smokers Who Do Not Quit With NRT

NCT06088862
View directory record Official record
Conditions
Smoking Cessation, Harm Reduction
Interventions
Nicoderm, Nicorette 4Mg Chewing Gum, Nicorette Lozenge Product, BIDI e-cigarette, on!
Drug · Other
Lead sponsor
Rose Research Center, LLC
Industry
Eligibility
22 Years to 65 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Randomized Clinical Trial to Reduce Harm From Tobacco

NCT02328794
View directory record Official record
Conditions
Smoking Cessation
Interventions
E-cigarette free access, E-cigarette/NRT/Zyban/Chantix Choice, Outcome Incentive arm, Loss framing incentive arm, Control
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 99 Years
Enrollment
6,006 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 2, 2017 · Synced Oct 9, 2026, 9:53 AM EDT
Terminated Not applicable Interventional Results available

Impact of Cigarette and E-cigarette Flavors on Adult Smoking Behavior

NCT04009850
View directory record Official record
Conditions
Tobacco Use
Interventions
Cigarette Brand Switching, E-cigarette Flavor
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 8, 2024 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

E-Cigarettes and Financial Incentives to Promote Tobacco Harm Reduction Among Adults Accessing Shelter Services

NCT03743532
View directory record Official record
Conditions
Cigarette Smoking
Interventions
E-cigarette Switching, Financial Incentives
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
21 Years to 100 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Feb 21, 2025 · Synced Oct 9, 2026, 9:53 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Experimental Tobacco Marketplace in Regulating Flavored Tobacco Products in Menthol Cigarette Smokers

NCT03897530
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Smoking Cessation Intervention, Functional Assessment, Questionnaire Administration
Behavioral · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 3, 2024 · Synced Oct 9, 2026, 9:53 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

A RCT to Determine the Effect of ENDS Flavor Availability on Abstinence Within Smokers

NCT07172438
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
P2611222, P2615022, P2615122, P2613422
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 65 Years
Enrollment
668 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
27
States / cities
Chandler, Arizona • Fort Smith, Arkansas • Altamonte Springs, Florida + 21 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tobacco Product Susceptibility and Substitutability by Rurality and Alcohol Use

NCT07010601
View directory record Official record
Conditions
Alcohol Use, E-cigarette Use, Cigarette Use
Interventions
Experimental Tobacco Marketplace, Hypothetical Novel Nicotine Product Purchase Tasks
Behavioral
Lead sponsor
Mark J Rzeszutek, PhD
Other
Eligibility
21 Years and older
Enrollment
737 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Oct 9, 2026, 9:53 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

e-Cigarette - DNA Adducts

NCT03284632
View directory record Official record
Conditions
Smoking, Cigarette Smoking, Electronic Cigarettes
Interventions
Not listed
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
217 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 9, 2022 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Phase 1Phase 2 Interventional

The Role of Nicotine and Non-Nicotine Alkaloids in E-Cigarette Use and Dependence

NCT02590393
View directory record Official record
Conditions
Nicotine Dependence
Interventions
E-cigarettes
Combination Product
Lead sponsor
Duke University
Other
Eligibility
21 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 21, 2024 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Vaporized Nicotine and Autonomic Control

NCT04613609
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Electronic Cigarette containing nicotine, Electronic Cigarette without nicotine
Device
Lead sponsor
Michigan Technological University
Other
Eligibility
21 Years to 40 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Houghton, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 3, 2020 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Salt-Based E-cigarette

NCT04238832
View directory record Official record
Conditions
Smoking, Tobacco Use
Interventions
Salt Base Nicotine, Free Base Nicotine
Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 9, 2021 · Synced Oct 9, 2026, 9:53 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Electronic Nicotine Delivery Devices and Potential Progression to Acute Lung Injury

NCT05316727
View directory record Official record
Conditions
Acute Lung Injury, Pulmonary Injury, Electronic Cigarette Use, Electronic Cigarette Related Lung Injury
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 80 Years
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 28, 2025 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Project 2 Cigarette and E-cigarette Nicotine Content and E-liquid Flavors

NCT03185546
View directory record Official record
Conditions
Smoking
Interventions
NNC Spectrum Cigarette, VLNC Spectrum Cigarette, Moderate nicotine level e-liquid, Low nicotine level e-liquid, Tobacco Flavors, Tobacco and non-tobacco e-liquid flavors
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
2
States / cities
Winston-Salem, North Carolina • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 14, 2021 · Synced Oct 9, 2026, 9:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Neurophysiological and Immunological Effects of the Transition From Combustible to Electronic Cigarettes

NCT02433015
View directory record Official record
Conditions
Tobacco Smoking, Nicotine Dependence
Interventions
Electronic Cigarette, Tobacco Cigarette
Other
Lead sponsor
Laureate Institute for Brain Research, Inc.
Other
Eligibility
18 Years to 50 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jun 28, 2017 · Synced Oct 9, 2026, 9:53 AM EDT