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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Electronic Cigarettes Clear all
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 21, 2026 · Synced Sep 25, 2026, 12:52 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Comparative Pharmacokinetics and Pharmacodynamics of Synthetic Nicotine

NCT05962229
View directory record Official record
Conditions
Nicotine Dependence, Nicotine Vaping
Interventions
(S)-Nicotine, (R)- nicotine, Racemic nicotine
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Electronic Cigarette Use in Young Adult Men and Women

NCT03089541
View directory record Official record
Conditions
Cigarette Smoking, Tobacco Use
Interventions
Survey Arm
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 29 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 2, 2023 · Synced Sep 25, 2026, 12:52 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 22, 2025 · Synced Sep 25, 2026, 12:52 AM 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 17, 2023 · Synced Sep 25, 2026, 12:52 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Imaging Sex Differences in Smoking-Induced Pulmonary Inflammation

NCT03721822
View directory record Official record
Conditions
Smoking, Cigarette, Smoking E-cigarette, Healthy Volunteer
Interventions
[18F]NOS
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 45 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Sep 25, 2026, 12:52 AM EDT
Not listed Early Phase 1 Interventional Accepts healthy volunteers

Nicotine and Pavlovian Bias

NCT06027723
View directory record Official record
Conditions
Nicotine Vaping, Nicotine Dependence
Interventions
Nicotine, Placebo
Drug · Other
Lead sponsor
University of Southern California
Other
Eligibility
21 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 8, 2023 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Results available

E-cigarettes for Harm Reduction in Adults With Asthma

NCT05278065
View directory record Official record
Conditions
Smoking, Asthma, Electronic Cigarette Use, Cigarette Smoking
Interventions
Nicotine
Other
Lead sponsor
Brown University
Other
Eligibility
21 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Nov 17, 2025 · Synced Sep 25, 2026, 12:52 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Carcinogen and Toxicant Exposure Among Young Adults Who Co-Use Cigarettes, E-cigarettes and Cannabis (Co-Tox Study)

NCT07167225
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma, E-Cig Use
Interventions
Effectiveness of different recruitment approaches, Choice of study completion locations, Cannabis Engagement Assessment, E-cigarette dependence Scale, Nicotine dependence Scale, Co use practices QUestionnaire
Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 25 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Impact of Flavors on Nicotine Perception and Self-Administration Via E-cigarettes

NCT04038515
View directory record Official record
Conditions
Nicotine, E-liquid Flavors
Interventions
Nicotine 0 mg/mL, Nicotine 6 mg/mL, Nicotine 12 mg/mL, Nicotine 24 mg/mL, 'Menthol' flavor, 'Menthol/Mint' flavor, 'Green Apple' flavor, 'Watermelon' flavor, 'Unflavored'
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 30 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 4, 2024 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Feasibility of a Decision Aid for E-Cigarettes in Primary Care

NCT03836573
View directory record Official record
Conditions
Smoking, Cigarette, Smoking Cessation
Interventions
Smoking Cessation iPad Decision Aid Tool
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 100 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Sep 25, 2026, 12:52 AM 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 2, 2020 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Characterization of Biomarkers of Tobacco Exposure, Urge-to-Smoke Following Exclusive and Dual Ad Lib Use of Electronic Cigarettes

NCT02385227
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Exclusive blu™ e-cigarette A1, Exclusive blu™ e-cigarette A2, Exclusive blu™ e-cigarette A3, Dual blu™ e-cigarette and usual brand B1, Dual blu™ e-cigarette and usual brand B2, Dual blu™ e-cigarette and usual brand B3, Nicotine product cessation C
Other
Lead sponsor
Lorillard Tobacco Company
Industry
Eligibility
21 Years to 65 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Mar 10, 2015 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Electronic Cigarette Flavors on Abuse Liability in Smokers (P3-Taste)

NCT05971823
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Tobacco product administration and assessment
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Short-Term Cardiovascular Effects of E-Cigarettes: Influence of E-Liquid pH

NCT04449510
View directory record Official record
Conditions
Cardiovascular Risk Factor, Nicotine Dependence
Interventions
Electronic Cigarette
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 70 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Computer-Assisted Tobacco Interventions in Dental Offices

NCT01584882
View directory record Official record
Conditions
Smoking
Interventions
CATI Tool
Behavioral
Lead sponsor
HealthPartners Institute
Other
Eligibility
18 Years to 100 Years
Enrollment
548 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Bloomington, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 22, 2023 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Implementation and Dissemination of an Evidence-Based Tobacco Product Use Prevention Videogame Intervention With Adolescents

NCT03815591
View directory record Official record
Conditions
Smoking Cessation, Smoking
Interventions
smokeSCREEN web-based game
Device
Lead sponsor
Yale University
Other
Eligibility
10 Years to 16 Years
Enrollment
560 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 21, 2022 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Chicago Community Health Study

NCT04460417
View directory record Official record
Conditions
Smoking
Interventions
Enhanced Care, TAU
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 6, 2020 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional

Electronic Cigarettes as a Harm Reduction Strategy Among People Living With HIV/AIDS

NCT04218708
View directory record Official record
Conditions
Nicotine Addiction
Interventions
Nicotine patch and gum, Minnesota Nicotine Withdrawal Scale (MNWS), ASSIST (the Alcohol, Smoking and Substance Involvement Screening), Counseling, NIDA Standardized Research E-cigarettes (SREC)
Other · Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD170501: Study to Assess Biomarkers of Tobacco Exposure in Smokers During In-Clinic Confinement Switch to an Electronic Cigarette

NCT03170674
View directory record Official record
Conditions
Smoking
Interventions
FT21039, FT21092, FT21018
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
2
States / cities
Overland Park, Kansas • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 7, 2017 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluating Selected Constituents in the Exhaled Breath Samples

NCT04143256
View directory record Official record
Conditions
Electronic Cigarette Use, Cigarette Use, Electronic, Tobacco Use, Tobacco Smoking
Interventions
JUUL ENDS 5% Virginia Tobacco, JUUL 3% Virginia Tobacco ENDS, JUUL 5% Mint ENDS, JUUL 3% Mint ENDS, JUUL 5% Menthol ENDS, JUUL 3% Menthol ENDS, JUUL 5% Mango ENDS, JUUL 3% Mango ENDS, US Cigarette, Non-menthol - Marlboro Gold King Size, US Cigarette, Menthol - Newport King Size
Other
Lead sponsor
Juul Labs, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
135 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
3
States / cities
Secaucus, New Jersey • Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 10, 2020 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cigarette and E-cigarette Nicotine Content in an Electronic Tobacco Marketplace (ETM)

NCT05320887
View directory record Official record
Conditions
Tobacco Use
Interventions
Normal Nicotine Content Vape with all flavor e-liquids, Normal nicotine content vape with tobacco e-liquids, Low nicotine content vape with all flavor e-liquids, Low nicotine content vape with tobacco e-liquids
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
21 Years and older
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 8, 2024 · Synced Sep 25, 2026, 12:52 AM EDT
Completed Phase 2 Interventional Results available

A Study of Cytisinicline for Vaping Cessation in Adult Smokers

NCT05431387
View directory record Official record
Conditions
Vaping, E-Cig Use
Interventions
cytisinicline, Placebo, Behavioral support
Drug · Behavioral
Lead sponsor
Achieve Life Sciences
Industry
Eligibility
18 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
5
States / cities
Lexington, Kentucky • Boston, Massachusetts • Rochester, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Sep 25, 2026, 12:52 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Factors That Impact the Relationship Between Pulmonary Status and Susceptibility to Electronic Cigarette Use

NCT04151784
View directory record Official record
Conditions
Electronic Cigarette Use, Pulmonary Disease
Interventions
Pulmonary Group, Healthy Control
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 24, 2021 · Synced Sep 25, 2026, 12:52 AM EDT