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ClinicalTrials.gov public records Last synced Oct 19, 2026, 10:29 PM EDT

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Showing 1–24 of 188 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Electronic Cigarette #2 Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Gender Differences in Switching From Smoking Regular Cigarettes to E-Cigarettes

NCT03856515
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Nicotine Replacement, Questionnaire Administration, Electronic Cigarette
Drug · Other · Device
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
21 Years and older
Enrollment
169 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Acute Effects of E-Cigarette Aerosol Inhalation

NCT03479203
View directory record Official record
Conditions
Endothelial Dysfunction, Biochemical Markers
Interventions
Electronic Cigarette Aerosol
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 35 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 8, 2024 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Online Intervention to Reduce E-cigarette Use and Susceptibility to Smoking in Young Adults

NCT06129123
View directory record Official record
Conditions
E-cigarette Use
Interventions
Live Free From E-cigarettes
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 24 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of e-Cigarettes on Perceptions and Behavior - Remote Substudy # 1

NCT05958979
View directory record Official record
Conditions
Electronic Cigarette Use, Cigarette Smoking, Cigarette Use, Electronic, Vaping
Interventions
Control Marketing Strategies, Experimental Marketing Strategies
Other
Lead sponsor
University of Southern California
Other
Eligibility
21 Years and older
Enrollment
601 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 19, 2026, 10:29 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Effects of Electronic Cigarettes on Lung Biology

NCT02188511
View directory record Official record
Conditions
Lung Disease, Lung Disorder
Interventions
Group A, Group B, Group C, Group D, Group E
Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
21 Years to 85 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 24, 2020 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Switching Individuals in Treatment for Opioid Use Disorder Who Smoke Cigarettes to the SREC

NCT05881304
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Standardized research e-cigarette (SREC)
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Oct 19, 2026, 10:29 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Alternate Nicotine Delivery Systems and Airway Epithelial Biology

NCT01974063
View directory record Official record
Conditions
Smoking, Smoking Cessation
Interventions
Not listed
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 3, 2018 · Synced Oct 19, 2026, 10:29 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Neuroimaging Approaches to Improve Prediction of Smoking Initiation and Nicotine Escalation in Young Adult ENDS Users

NCT05447325
View directory record Official record
Conditions
Message Exposure (Sequence: Regular Then Flavor), Message Exposure (Sequence: Flavor Then Regular), No Message Exposure (Control Condition)
Interventions
Exposure to Anti-Vaping Messages (generic themes then flavor-specific themes), Exposure to Anti-Vaping Messages (flavor-specific themes then generic themes), Exposure to Anti-Vaping Messages (no message exposure)
Behavioral
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 29 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 3, 2026 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Uptake and Abuse Liability Assessments of Blu Disposable Electronic Cigarettes

NCT05457634
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Combustible Cigarette, blu Disposable A, blu Disposable B, blu Disposable C, blu Disposable D, blu Disposable E
Other
Lead sponsor
Fontem US LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Burbank, California
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional

Respiratory Effects of E-Cigarettes in Obese Youth

NCT05869318
View directory record Official record
Conditions
E-Cig Use
Interventions
ECIG own, ECIG Vuse
Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 25 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of New Standards for Tobacco Products Among Dual E-Cigarette/Combusted Cigarette Users - Project 2

NCT05473585
View directory record Official record
Conditions
Smoking, Smoking, Cigarette, E-Cig Use, Nicotine Dependence
Interventions
very low nicotine content cigarettes, normal nicotine content cigarettes, Study e-cigarette
Other
Lead sponsor
Duke University
Other
Eligibility
21 Years and older
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 19, 2023 · Synced Oct 19, 2026, 10:29 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

E-cigarette Cessation in Adults Who Co-use Cannabis

NCT06688539
View directory record Official record
Conditions
Nicotine Dependence, Tobacco Use Disorder
Interventions
Varenicline Pill, Contingency management, Counseling
Drug · Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 40 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
3
States / cities
Charleston, South Carolina • Lancaster, South Carolina • Pickens, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 19, 2026, 10:29 PM EDT
Not yet recruiting Early Phase 1 Interventional Accepts healthy volunteers

Evaluating the Delivery and Effects of THC Vaping Liquids in the Bloodstream

NCT06334016
View directory record Official record
Conditions
Cannabis Dependence
Interventions
Biospecimen Collection, Cannabis sativa Extract, Nicotine, Placebo Administration, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Development of a Videogame Prototype Targeting Cigarette and Marijuana Smoking, and Tobacco Product Prevention Among Young Adolescents (smokeScreen)

NCT03722888
View directory record Official record
Conditions
Smoking
Interventions
smokeSCREEN video game
Device
Lead sponsor
Yale University
Other
Eligibility
11 Years to 14 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
3
States / cities
Hamden, Connecticut • New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 29, 2018 · Synced Oct 19, 2026, 10:29 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

E-Cigarettes: Dynamic Patterns of Use and Health Effects

NCT02527980
View directory record Official record
Conditions
Smoking, Nicotine Dependence
Interventions
No intervention: observation only
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
422 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 10, 2019 · Synced Oct 19, 2026, 10:29 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Smoke-free Home Study in Subsidized Housing

NCT06170437
View directory record Official record
Conditions
Tobacco Dependence, Tobacco Smoking
Interventions
Smoke-free home resident intervention, Lay Health Worker coaching
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
544 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Network Intervention to Prevent Vaping

NCT04678245
View directory record Official record
Conditions
Vaping, Preventive Psychiatry, Social Networking
Interventions
Above the Influence-Vaping (ATI-V)
Behavioral
Lead sponsor
University of Rochester
Other
Eligibility
12 Years to 18 Years
Enrollment
3,950 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

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

NCT02269514
View directory record Official record
Conditions
Smoking
Interventions
Own Brand Cigarette, Electronic Cigarette #1, Electronic Cigarette #2, Electronic Cigarette #3, Leading U.S. Nicotine Gum
Other
Lead sponsor
R.J. Reynolds Vapor Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 4, 2018 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cardiovascular Assessment of the Effects of Tobacco and Nicotine Delivery Products

NCT01964807
View directory record Official record
Conditions
Adverse Effect of Other Agents Primarily Affecting the Cardiovascular System, Initial Encounter
Interventions
Cigarette, NIDA test type with 16.6 mg nicotine, Cigarette, NIDA test type with <0.45 mg nicotine, Electronic cigarette with 18 mg/ml nicotine, Electronic Cigarette with no nicotine, Moist snuff, Sham Smoking, Secondhand cigarette smoke (SHS), Conditioned, filtered air, Sham Moist Snuff
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 50 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 27, 2021 · Synced Oct 19, 2026, 10:29 PM EDT
Terminated Phase 4 Interventional Results available

e-Cigarettes Versus NRT Gum for Smoking Cessation

NCT01925781
View directory record Official record
Conditions
Nicotine Addiction, Smoking Cessation
Interventions
Nicotine polacrilex, STAM 1100mAh CE4 eGo Clearomizer
Drug · Other
Lead sponsor
Creighton University
Other
Eligibility
19 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 14, 2016 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Combination of E-cigarettes and Varenicline for Tobacco Harm Reduction

NCT04210180
View directory record Official record
Conditions
Smoking Cessation, Harm Reduction
Interventions
Varenicline, e-cigarette
Drug · Other
Lead sponsor
Rose Research Center, LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 24, 2022 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Electronic Cigarette Use on the Lungs

NCT02596685
View directory record Official record
Conditions
Current Smoker, Never Smoker, Tobacco Use Disorder, Former Smoker, E-cig User
Interventions
Bronchoscopy, Electronic Cigarette, Laboratory Biomarker Analysis, Questionnaire Administration
Procedure · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 45 Years
Enrollment
142 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 30, 2024 · Synced Oct 19, 2026, 10:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine and Cannabis Vape Labeling Experiment - Spring 2025

NCT06919276
View directory record Official record
Conditions
Vaping, Adolescent, Electronic Cigarette Use, Nicotine, Cannabis
Interventions
Vaping Device Labeling
Other
Lead sponsor
University of Southern California
Other
Eligibility
11 Years to 19 Years
Enrollment
3,048 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 19, 2026, 10:29 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Enhancing Smoking Cessation Via Telehealth Options in Primary Care

NCT05493254
View directory record Official record
Conditions
Smoking Cessation
Interventions
Smoking cessation e-visit, Treatment As Usual
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
672 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Oct 19, 2026, 10:29 PM EDT