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ClinicalTrials.gov public records Last synced Oct 20, 2026, 1:16 AM EDT

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Showing 265–288 of 305 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Vaping Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Enhanced E-cigarette Coaching Intervention for Dual Users of Cigarettes and E-cigarettes

NCT03575468
View directory record Official record
Conditions
Smoking Cessation
Interventions
Enhanced E-cigarette Coaching, Quitline treatment as usual
Behavioral
Lead sponsor
Consumer Wellness Solutions
Industry
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 16, 2023 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Acute Effect of Vaping on Food Intake

NCT04219189
View directory record Official record
Conditions
Energy Intake, Food Intake, E-Cig Use, Appetite
Interventions
Vaping condition, Control condition
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 5, 2023 · Synced Oct 20, 2026, 1:16 AM EDT
Completed No phase listed Observational

Vape Use Among Younger & Older Smokers

NCT07214168
View directory record Official record
Conditions
Smoking Cigarette, Smoking Behaviors, Vaping, Vaping Behaviors
Interventions
Not listed
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
21 Years to 65 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 20, 2026, 1:16 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 14, 2026 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Arterial Inflammation and E-Cigarettes

NCT02734888
View directory record Official record
Conditions
Arterial Inflammation
Interventions
No drug or device, only a test. The test is called a PET/CT
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 4, 2023 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Phase 4 Interventional Results available

Varenicline for Nicotine Vaping Cessation in Adolescents

NCT05367492
View directory record Official record
Conditions
Vaping, Nicotine Dependence
Interventions
Double Blind Varenicline, Double Blind Placebo, QuitVaping, This Is Quitting
Drug · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
16 Years to 25 Years
Enrollment
261 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 27, 2025 · Synced Oct 20, 2026, 1:16 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Are Smokers Switching to Vaping at Lower Risk for Cancer? (Electronic Cigarettes and Cancer Risk)

NCT03750825
View directory record Official record
Conditions
Cigarette Smoking
Interventions
NIDA Standard Research E-cigarette (SREC)
Device
Lead sponsor
University of Southern California
Other
Eligibility
22 Years to 55 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Media Literacy for High School Tobacco Prevention

NCT05120466
View directory record Official record
Conditions
Adolescent Behavior, Tobacco Use, E-Cig Use
Interventions
AD IT UP media literacy intervention, Usual health education curriculum
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
13 Years to 17 Years
Enrollment
147 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 2, 2024 · Synced Oct 20, 2026, 1:16 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Clinical Alternatives for Reducing Harm Using E-cigarettes

NCT07039292
View directory record Official record
Conditions
Smoking, E-Cig Use, Oncology
Interventions
Harm Reduction (E-cigarette switching), Standard of Care
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
208 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Electronic Cigarettes as a Harm Reduction Strategy in Individuals With Substance Use Disorder

NCT04063267
View directory record Official record
Conditions
Cigarette Smoking, Addiction, E Cig Use
Interventions
E cigarettes, Nicotine Replacement Therapy
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 20, 2024 · Synced Oct 20, 2026, 1:16 AM EDT
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 20, 2026, 1:16 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Cannabis THC Potency, Metabolism, and Cognitive Impairment in Young Adults

NCT06077292
View directory record Official record
Conditions
Cannabis Use, THC, Marijuana Use, Cognitive Impairment, THC Vaping
Interventions
15% THC Potency Reduction, 35% THC Potency Reduction
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 25 Years
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 20, 2026, 1:16 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 20, 2026, 1:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessing the Effect of Flavor on ENDS Users' Experiences and Exposures

NCT04192032
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Preferred Juul pod flavor (5% nicotine), Classic Tobacco Juul pod flavor (5% nicotine), Preferred flavor with HWL, Preferred flavor, 3% nicotine, Preferred flavor, 0% nicotine
Other
Lead sponsor
Florida International University
Other
Eligibility
18 Years to 24 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Oct 20, 2026, 1:16 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 20, 2026, 1:16 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

E-Cigarette Aerosol, Conventional Cigarette Smoke, and Myocardial Perfusion

NCT02612701
View directory record Official record
Conditions
Coronary Artery Disease, Myocardial Perfusion
Interventions
Cigarettes, E-cigarettes (nicotine free e-liquid), E-cigarettes (low nicotine e-liquid), E-cigarettes (high nicotine e-liquid)
Other
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 49 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 4, 2021 · Synced Oct 20, 2026, 1:16 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Social Media Influences on Engagement and Susceptibility to Non-combustible Tobacco Product Use Among Youth and Young Adults (AYA)

NCT07721883
View directory record Official record
Conditions
Perceptions of Tobacco Products
Interventions
Each intervention will be a picture of a social media post. The posts will vary (in a 3X2 factorial design) the type of flavor described and whether concealability is described.
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
14 Years to 17 Years
Enrollment
4,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Not applicable Interventional

Acute Effects of TCIG vs ECIG in PLWH

NCT04568395
View directory record Official record
Conditions
E Cigarette Use, Vaping, Smoking, Tobacco Smoking, Nicotine Use Disorder, Qt Interval, Variation in, HIV I Infection, Oxidative Stress, Inflammation
Interventions
TCIG, ECIG, sham control
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 45 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 4, 2023 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Phase 2 Interventional

Pulmonary and Cardiac Effects of E-Cigarette Use in Pulmonary Patients Who Smoke Cigarettes

NCT05610514
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Chronic Bronchitis, Emphysema, Asthma-COPD Overlap Syndrome
Interventions
E-Cigarette, Financial Incentives
Other · Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
40 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Oct 20, 2026, 1:16 AM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Hyperpolarized Xenon-129 MR Imaging of the Lung

NCT04662658
View directory record Official record
Conditions
E-Cig Use
Interventions
Hyperpolarized Xenon -129 MRI
Drug
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 10, 2020 · Synced Oct 20, 2026, 1:16 AM EDT
Recruiting Not applicable Interventional

Cessation of Dual Use of Cigarettes and E-cigarettes During Pregnancy

NCT07124702
View directory record Official record
Conditions
Dual Use of Cigarettes and E-cigarettes, Gestational Weight Gain, Birth-weight-for-gestational-age z Score
Interventions
Simultaneous cessation intervention, Stepwise cessation intervention, Behavior counseling only
Behavioral
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years and older · Female only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Does Switching to Nicotine Containing Electronic Cigarettes Reduce Health Risk Markers

NCT03625986
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Nicotine-Containing Electronic Cigarette, Non-Nicotine Electronic Cigarette
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
21 Years to 70 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 27, 2025 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Methods Project 4: Clinical Trial - Amended

NCT03111537
View directory record Official record
Conditions
Tobacco Smoking
Interventions
Cigarettes, E-Cigarette, Nicotine Gum or Lozenge
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
264 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
3
States / cities
Minneapolis, Minnesota • Buffalo, New York • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Oct 20, 2026, 1:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Characterize the Nicotine Uptake and Subjective Effects With Use of JUUL Electronic Nicotine Delivery Systems

NCT04123041
View directory record Official record
Conditions
Electronic Cigarette Use, Tobacco Smoking
Interventions
JUUL ENDS, Combustible cigarette, comparator e-cigarette, Nicorette gum
Other
Lead sponsor
Juul Labs, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
137 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
2
States / cities
Kansas City, Kansas • Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Feb 13, 2020 · Synced Oct 20, 2026, 1:16 AM EDT