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ClinicalTrials.gov public records Last synced Oct 30, 2026, 6:28 PM EDT

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Showing 649–672 of 690 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Cigarette Use Clear all
Recruiting Phase 2 Interventional

Breathe Easier With Tadalafil Therapy for Dyspnea in COPD-PH

NCT05937854
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Pulmonary Hypertension, Dyspnea
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
35 Years to 89 Years
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
5
States / cities
Aurora, Colorado • Decatur, Georgia • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated May 15, 2026 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Results available

Mindfulness-based Smoking Cessation Enhanced With Mobile Technology

NCT04965181
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Mindfulness-Based Addiction Treatment, Nicotine Replacement Therapy, Self-help materials, iQuit Mindfully
Behavioral · Drug
Lead sponsor
Georgia State University
Other
Eligibility
18 Years and older
Enrollment
504 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 30, 2026, 6:28 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Mapping Brain Glutamate in Humans: Sex Differences in Cigarette Smokers

NCT05279053
View directory record Official record
Conditions
Sex, Cigarette Smoking
Interventions
Abstinence and Smoking
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 45 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 20, 2026 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Incorporating Financial Incentives to Increase Smoking Cessation Among Asian Americans Residing in New York City

NCT03397511
View directory record Official record
Conditions
Smoking Cessation, Smoking, Cigarette
Interventions
Financial Incentives
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 90 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 8, 2019 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Switching to a Vaping Device: Evaluating Risk Reduction Among Quitline Treatment Failures

NCT03502200
View directory record Official record
Conditions
Smoking, Cigarette
Interventions
JUUL, Treatment As Usual
Device · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 99 Years
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 21, 2023 · Synced Oct 30, 2026, 6:28 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Dyadic Financial Incentive Treatments for Dual Smoker Couples

NCT06296849
View directory record Official record
Conditions
Smoking, Cigarette
Interventions
Financial Incentive Treatment (FIT)
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
2
States / cities
Athens, Georgia • Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 30, 2026, 6:28 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluating the Relationship Between Tobacco Use, Anxiety Sensitivity, and Panic in Adolescents

NCT00535964
View directory record Official record
Conditions
Panic Disorder
Interventions
Not listed
Lead sponsor
University of Arkansas, Fayetteville
Other
Eligibility
12 Years to 17 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Fayetteville, Arkansas
Source: ClinicalTrials.gov public record
Updated Nov 17, 2022 · Synced Oct 30, 2026, 6:28 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Oral Nicotine Pouches Versus Nicotine Replacement Therapy to Reduce Cigarette Use for Smokers in Rural Appalachia

NCT06763536
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Carbon Monoxide Measurement, Nicotine Lozenge, Oral Nicotine Pouch, Nicotine Patch, Survey Administration, Check-in Phone Calls
Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Biomarker Feedback for Smoking Cessation

NCT02206971
View directory record Official record
Conditions
Cigarette Smoking
Interventions
urine analyses feedback
Other
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years to 75 Years
Enrollment
109 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 10, 2020 · Synced Oct 30, 2026, 6:28 PM EDT
Recruiting Not applicable Interventional

E-cigarettes for Harm Reduction Among Smokers With Serious Mental Illness

NCT05815199
View directory record Official record
Conditions
Cigarette Smoking
Interventions
E-cigarette (EC), Nicotine Replacement Therapy (NRT), Harm-Reduction Counseling, Ecological Momentary Intervention (EMI) Text Messaging
Other · Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 30, 2026, 6:28 PM 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 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Cigarette Pack Constituent Disclosures

NCT02785484
View directory record Official record
Conditions
Cigarette Smoking Behavior
Interventions
Label with constituent disclosure message, Label with litter message
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
21 Years and older
Enrollment
784 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 8, 2017 · Synced Oct 30, 2026, 6:28 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Multimodal Neuroimaging Genetic Biomarkers of Nicotine AddictionSeverity

NCT01867411
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 60 Years
Enrollment
159 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 29, 2026 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Phase 4 Interventional Results available

Varenicline for Cognitive Deficits and Cigarette Smoking in Schizophrenia - Efficacy and Predictors

NCT00802919
View directory record Official record
Conditions
Schizophrenia, Cigarette Smoking
Interventions
Varenicline, Placebo for varenicline
Drug
Lead sponsor
Nathan Kline Institute for Psychiatric Research
Other
Eligibility
18 Years to 65 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
2
States / cities
New York, New York • Orangeburg, New York
Source: ClinicalTrials.gov public record
Updated Dec 2, 2017 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Biomarkers of Exposure and Biomarkers of Potential Harm in Adult Smokers Who Completely Switch to E-vapor Products

NCT04800211
View directory record Official record
Conditions
Tobacco Use
Interventions
Experimental: Test Product 1, Experimental: Test Product 2
Other
Lead sponsor
Altria Client Services LLC
Industry
Eligibility
30 Years to 65 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
10
States / cities
Burbank, California • Wichita, Kansas • Lexington, Kentucky + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2025 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Text Messaging for Smoking Cessation in College Health Clinics

NCT02191033
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Smoking counseling, Text messaging, Nicotine patch
Behavioral · Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 24 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 1, 2020 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD200907: A Study to Assess Elements of Abuse Liability for a Heated Tobacco Product With Four Non-Combusted Cigarette Variants

NCT05114863
View directory record Official record
Conditions
Smoking, Smoking Behaviors, Tobacco Use, Tobacco Smoking
Interventions
Product A1, Product B, Product C, Product D, Product A2, Product E, Product F, Product G, Product H, Product N
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 27, 2022 · Synced Oct 30, 2026, 6:28 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Novel vs. Usual Brand Menthol Cigarettes on Abuse Liability

NCT07564648
View directory record Official record
Conditions
Cigarette Addiction, Tobacco Use Disorder
Interventions
Biospecimen Collection, Questionnaire Administration, Cigarette Purchase Task, Cross-Price Elasticity Task, Daily Diary Surveys, Progressive Ratio Task
Behavioral
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dual Use Approach Bias Training for Nicotine Addiction

NCT05306158
View directory record Official record
Conditions
Tobacco Smoking, Electronic Cigarette Use, Substance Use
Interventions
CC+ECIG Condition, CC Condition, Sham Condition
Other
Lead sponsor
University of Houston
Other
Eligibility
18 Years and older
Enrollment
107 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 27, 2025 · Synced Oct 30, 2026, 6:28 PM EDT
Not yet recruiting Phase 2 Interventional

DOSE-UP: Dose Optimization for Smoking and E-Cigarette Use Pharmacotherapy

NCT07754578
View directory record Official record
Conditions
Dual Use of Cigarettes and E-cigarettes
Interventions
Text- and web-based support, Nicotine Replacement Therapy (NRT, nicotine patch), Nicotine replacement therapy lozenge
Behavioral · Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
321 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 15, 2026 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetic Study Comparing Nicotine Delivery From E-cigarettes and a Conventional Cigarette in Healthy Subjects

NCT02474849
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Use electronic cigarette or smoke conventional cigarette
Other
Lead sponsor
British American Tobacco (Investments) Limited
Industry
Eligibility
21 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Burbank, California
Source: ClinicalTrials.gov public record
Updated Sep 15, 2015 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Smoking, Stress, and Mobile Technology

NCT04838236
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
MASP app + NRT, QuitGuide app + NRT
Other
Lead sponsor
University of Houston
Other
Eligibility
18 Years and older
Enrollment
227 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
2
States / cities
Oklahoma City, Oklahoma • Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 16, 2025 · Synced Oct 30, 2026, 6:28 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

E-Cigarette Effects on Markers of Cardiovascular and Pulmonary Disease

NCT03863509
View directory record Official record
Conditions
Tobacco Use, E-Cigarette Use, Cardiovascular Diseases, Pulmonary Disease
Interventions
Cigarettes, E-Cigarettes
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 21, 2023 · Synced Oct 30, 2026, 6:28 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Inhalation of 20,000 EU CCRE and Mucociliary Clearance (MCC) in Otherwise Healthy Individuals Who Are Current Cigarette Smokers

NCT00924768
View directory record Official record
Conditions
Healthy, Cigarette Smoking
Interventions
20K EU CCRE
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 6, 2013 · Synced Oct 30, 2026, 6:28 PM EDT