Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Nov 15, 2026, 1:42 PM EST

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Showing 505–528 of 798 matching trials from the live ClinicalTrials.gov search.
Conditions
Cigarette Smoking
Interventions
Propranolol, Placebo
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Behavior, Health Risk, Implementation Science, E Cigarette Use, Cessation, Smoking, Incentives, Engagement, Patient, Peer Support, Media Literacy
Interventions
Text-massaging suport, Financial incentive, Media literacy
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 29 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Omaha, Nebraska
Completed Not applicable Interventional Accepts healthy volunteers Results available

Assessing Electronic Cigarette Nicotine Flux

NCT04378907
Conditions
Electronic Cigarette Use
Interventions
Cigarette Smoker/ECIG users: 0 mg/ml nicotine concentration, Cigarette Smokers/ECIG users: 6 mg/ml nicotine concentration, Cigarette Smokers/ECIG users: 15 mg/ml nicotine concentration, Cigarette Smokers/ECIG users: 30 mg/ml nicotine concentration
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 55 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Richmond, Virginia
Conditions
Addiction Nicotine
Interventions
VapeAway filter system
Device
Lead sponsor
VapeAway
Industry
Eligibility
21 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Conditions
Tobacco Use, Tobacco Smoking, Tobacco Use Cessation, Tobacco Use Disorder, Schizophrenia, Schizoaffective Disorder
Interventions
Persistence Targeted Smoking Cessation in SMI (PTSC-S), Nicotine patch
Behavioral · Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 70 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
New Brunswick, New Jersey
Conditions
Cigarette Smoking, Hypertension
Interventions
Varenicline, behavioral therapy
Drug · Behavioral
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Farmington, Connecticut
Conditions
Tobacco Use Disorder, Smoking
Interventions
Ariva® Silver Wintergreen, Silver Wintergreen
Other
Lead sponsor
Star Scientific, Inc
Industry
Eligibility
23 Years to 72 Years
Enrollment
111 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Martinsburg, West Virginia
Conditions
Smoking
Interventions
smokeSCREEN game
Behavioral
Lead sponsor
Yale University
Other
Eligibility
10 Years to 16 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
4
States / cities
Hamden, Connecticut • New Haven, Connecticut
Conditions
Smoking Cessation, Obesity and Obesity-related Medical Conditions
Interventions
Electronic Cigarettes (EC), Nicotine replacement therapy (NRT)
Other
Lead sponsor
Brown University
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Providence, Rhode Island
Conditions
Tobacco Use
Interventions
Not listed
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 50 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Conditions
Cigarette Smoking-Related Carcinoma, Malignant Thoracic Neoplasm
Interventions
Electronic Health Record Review, Informational Intervention, Interview, Referral, Smoking Cessation Intervention, Survey Administration
Other · Device
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Conditions
Nicotine Addiction, Drug Addiction, Drug Dependence, Substance Use Disorder, Tobacco Dependence
Interventions
Treatment A with device Clickotine® (Active intervention), Treatment B with smoking education (control)
Device
Lead sponsor
Click Therapeutics, Inc.
Industry
Eligibility
18 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
New York, New York
Conditions
Nicotine Dependence
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 64 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Baltimore, Maryland
Conditions
Cigarette Smoking
Interventions
Smoking research cigarettes with or without NRT
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Concurrent Nicotine Patch / Denicotinized Cigarette Therapy for Smoking Cessation II

NCT00734617
Conditions
Cigarette Smoking
Interventions
Nicotine Patch
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
479 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Cigarette Smoking
Interventions
Contingency Management, Standard of Care
Behavioral · Other
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
New Britain, Connecticut
Completed No phase listed Observational Accepts healthy volunteers

E-Cigarettes: Dynamic Patterns of Use and Health Effects

NCT02527980
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
Completed Phase 1 Interventional Results available

New Approaches to Smoking Cessation in Heavy Drinkers

NCT02151591
Conditions
Nicotine Dependence, Cigarette Smoking, Alcohol Consumption, Heavy Drinking
Interventions
Varenicline
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 75 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
New Haven, Connecticut
Conditions
HIV, Emphysema, HIV Infections
Interventions
Not listed
Lead sponsor
Philip Diaz
Other
Eligibility
18 Years and older
Enrollment
365 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Columbus, Ohio
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Bronchoscopy in Determining the Effect of E-Cigarette Smoking on Biomarkers in the Lungs

NCT03691350
Conditions
Cigarette Smoker, Current Every Day Smoker
Interventions
Bronchoscopy with Bronchoalveolar Lavage, Cigarette, Electronic Cigarette, Laboratory Biomarker Analysis, Nicotine Replacement, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 52 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Columbus, Ohio
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
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Online Smoking Cessation Intervention, Questionnaire Administration, Health Promotion and Education
Behavioral · Other
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years to 30 Years
Enrollment
125 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Seattle, Washington
Conditions
Smoking, Smoking Behaviors, Tobacco Use, Tobacco Smoking
Interventions
Non-combusted cigarette variant 42001401, Non-combusted cigarette variant 42001399, Non-combusted cigarette variant 40007386, Non-combusted cigarette variant 42001402
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years and older
Enrollment
194 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
7
States / cities
Sandy Springs, Georgia • Lexington, Kentucky • Charlotte, North Carolina + 4 more
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Withdrawal and Reward Processing

NCT05041959
Conditions
Cigarette Smoking, Nicotine Dependence, Nicotine Withdrawal
Interventions
Smoking Abstinence, Ad Lib Smoking
Other
Lead sponsor
University of Oklahoma
Other
Eligibility
21 Years to 55 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Tulsa, Oklahoma