Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 30, 2026, 8:05 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 265–288 of 439 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: e-cigarettes Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Addressing Tobacco, E-Cigarette, and Cannabis Waste

NCT05751369
View directory record Official record
Conditions
Knowledge, Attitudes, Practice
Interventions
Education plus Support
Behavioral
Lead sponsor
California State University, San Marcos
Other
Eligibility
18 Years to 25 Years
Enrollment
406 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
2
States / cities
Davis, California • San Marcos, California
Source: ClinicalTrials.gov public record
Updated Oct 26, 2026 · Synced Oct 30, 2026, 8:05 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

E-cigarette Nicotine Study

NCT04709471
View directory record Official record
Conditions
Nicotine Dependence, Electronic Cigarette Use, Cigarette Smoking
Interventions
Nicotine, Juul e-cigarette, Reduction
Drug · Device · Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
21 Years and older
Enrollment
77 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Aug 26, 2022 · Synced Oct 30, 2026, 8:05 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers Results available

Risk and Benefits of Electronic Cigarettes to Older Smokers at High Risk for Lung Cancer

NCT05144542
View directory record Official record
Conditions
Lung Carcinoma
Interventions
Nicotine Replacement
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
50 Years to 80 Years
Enrollment
135 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Oct 30, 2026, 8:05 PM 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 22, 2019 · Synced Oct 30, 2026, 8:05 PM EDT
Completed Not applicable Interventional Results available

Assessing E-Cigarettes for Tobacco Harm Reduction in the Context of Lung Cancer Screening

NCT06472869
View directory record Official record
Conditions
Electronic Cigarette Use, Smoking, Cigarette, Nicotine Dependence
Interventions
NJOY ACE e-cigarette
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
50 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Oct 30, 2026, 8:05 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Teen Health Choices & Wellness

NCT06822569
View directory record Official record
Conditions
Health Behavior, Wellness, Psychological, Substance Use
Interventions
Cue reactivity paradigm
Other
Lead sponsor
Brown University
Other
Eligibility
13 Years to 16 Years
Enrollment
224 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 30, 2026, 8:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

COPD E-cigarette Topography Training

NCT05510154
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive, Tobacco Smoking
Interventions
Brief advice, Single Training, Training to Competency
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 27, 2023 · Synced Oct 30, 2026, 8:05 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Adverse Airway Effects From Tobacco and E-Cigarettes

NCT03251053
View directory record Official record
Conditions
Airway Morbidity, Smoking Cessation, Nicotine Adverse Reaction, Smoking, Tobacco, Smoking, Cigarette
Interventions
Electronic cigarette use, Control regular cigarette smokers
Device · Other
Lead sponsor
Miami VA Healthcare System
Federal
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 16, 2017 · Synced Oct 30, 2026, 8:05 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Oxidative Stress and Vitamin E Requirements

NCT00067899
View directory record Official record
Conditions
Smoking
Interventions
Vitamin E with and without Vitamin C
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 35 Years
Enrollment
99 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2005
U.S. locations
1
States / cities
Corvallis, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 19, 2013 · Synced Oct 30, 2026, 8:05 PM EDT
Recruiting Phase 4 Interventional

The Avenues Study: Dual Use Cessation

NCT06474299
View directory record Official record
Conditions
Smoking Cessation, Electronic Cigarette Use
Interventions
Varenicline, Nicotine patch, Dual Focused Cessation Counseling, Smoking Focused Cessation Counseling, Counseling Intensity: 1 Session, Counseling Intensity: 4 Sessions
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 30, 2026, 8:05 PM 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 30, 2026, 8:05 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Electronic Cigarettes or Nicotine Inhaler for Smoking Cessation

NCT02004171
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
electronic cigarette, nicotine inhaler
Other · Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 60 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 19, 2016 · Synced Oct 30, 2026, 8:05 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Nicotine Regulation for Dual Users of E-cigarettes and Cigarettes

NCT06614504
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Varying the nicotine content of cigarettes, Varying the nicotine content of e-cigarettes
Other
Lead sponsor
University of Vermont
Other
Eligibility
21 Years and older
Enrollment
308 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
2
States / cities
Providence, Rhode Island • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jun 27, 2025 · Synced Oct 30, 2026, 8:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Perceptions of Vaping Products

NCT06868368
View directory record Official record
Conditions
Abuse Tobacco, Exposure
Interventions
Biospecimen Collection, Survey Administration, Vaping Topography, Participant's Own Preferred E-cigarette, Nicotine E-cigarette, 6-methyl-nicotine (metatine) e-cigarette
Other · Behavioral
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 34 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 30, 2026, 8:05 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Switch or Quit R01

NCT06373679
View directory record Official record
Conditions
Cigarette Smoking, Smoking Behaviors
Interventions
Switching to E-Cigarette, Switching using Medication
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
225 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 30, 2026, 8:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Characterize Puff Topography With Use of JUUL 5% Electronic Nicotine Delivery Systems (ENDS) in Adult Smokers

NCT03596034
View directory record Official record
Conditions
Tobacco Use, Nicotine Dependence, Other Tobacco Product, Tobacco Smoking
Interventions
JUUL 5%, Virginia Tobacco, ENDS product
Other
Lead sponsor
Juul Labs, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 14, 2021 · Synced Oct 30, 2026, 8:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Perceived Effectiveness of Vaping Prevention Ads Among Adolescents and Young Adults

NCT07116837
View directory record Official record
Conditions
Vaping
Interventions
Vaping prevention video ads
Behavioral
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
13 Years to 20 Years
Enrollment
3,113 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Oct 30, 2026, 8:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

E-cigarettes, Nicotine Inhaler, and Blood Vessel Function

NCT03072628
View directory record Official record
Conditions
Nicotine Dependence
Interventions
e-cig with nicotine, e-cig without nicotine, nicotine inhaler, sham control
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 45 Years
Enrollment
148 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 4, 2023 · Synced Oct 30, 2026, 8:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD190202: Study to Assess Elements of Abuse Liability for Two Electronic Nicotine Delivery Systems

NCT04094363
View directory record Official record
Conditions
Smoking, Tobacco Smoking, Tobacco Use
Interventions
Product A, Product B, Product C, Product D
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
2
States / cities
Knoxville, Tennessee • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jun 27, 2022 · Synced Oct 30, 2026, 8:05 PM 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 30, 2026, 8:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Study to Evaluate Nicotine Uptake and Biomarkers in Adult Smokers Using mybluTM Electronic Cigarettes

NCT04429932
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Myblu flavor A_2.4, Myblu flavor B_2.4, Myblu flavor C_2.4, Myblu flavor D_2.4, Myblu flavor E_1.2, Myblu flavor F_1.2, Myblu flavor G_2.4, Myblu flavor H_2.4
Other
Lead sponsor
Fontem US LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 7, 2021 · Synced Oct 30, 2026, 8:05 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 30, 2026, 8:05 PM 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 30, 2026, 8:05 PM EDT
Completed Not applicable Interventional Results available

Quit or Switch: E-cigarette Study

NCT05525078
View directory record Official record
Conditions
Tobacco Use
Interventions
e-cigarette, Nicotine patch, Nicotine lozenge
Behavioral · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 26, 2024 · Synced Oct 30, 2026, 8:05 PM EDT