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ClinicalTrials.gov public records Last synced Oct 19, 2026, 5:30 PM EDT

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Showing 73–96 of 1,028 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Cigarettes Clear all
Completed Early Phase 1 Interventional Accepts healthy volunteers

The Effects of Cannabidiol and ∆-9-THC in Humans

NCT01180374
View directory record Official record
Conditions
Healthy
Interventions
Cannabidiol, Delta-9-THC, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 31, 2022 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of e-Cigarettes on Perceptions and Behavior

NCT03742817
View directory record Official record
Conditions
Electronic Cigarettes
Interventions
e-Cigarette
Other
Lead sponsor
University of Southern California
Other
Eligibility
21 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 11, 2023 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pivot Breath Sensor Human Factors and Usability Study

NCT03835260
View directory record Official record
Conditions
Smoking Cessation, Smoking, Tobacco
Interventions
Pivot Breath Sensor
Device
Lead sponsor
Jennifer Marler, MD
Industry
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Nov 8, 2022 · Synced Oct 19, 2026, 5:30 PM EDT
Completed No phase listed Observational

Biomarkers and Genetic Factors Related to Emphysema

NCT00757120
View directory record Official record
Conditions
Emphysema, Pulmonary Disease, Chronic Obstructive
Interventions
Not listed
Lead sponsor
Washington University School of Medicine
Other
Eligibility
45 Years and older
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 4, 2018 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Electronic Cigarette Use on Cough Reflex Sensitivity

NCT02203162
View directory record Official record
Conditions
Cough
Interventions
electronic cigarette exposure
Device
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jun 28, 2023 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Phase 1Phase 2 Interventional Results available

STARS (Smoking Treatment And Remote Sampling) Study

NCT04525755
View directory record Official record
Conditions
Smoking, Smoking Cessation, Tobacco Smoking, Cigarette Smoking
Interventions
Varenicline 0.5 MG, Nicotine Replacement Therapy (NRT)
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
652 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 19, 2026, 5:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of Smoking Cues on Tobacco Craving Responses and the Reinforcing Efficacy of Cigarettes in Adolescent Smokers

NCT01148355
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
13 Years to 17 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of Abuse Liability of Very Low Nicotine (VLN) Mentholated Cigarettes

NCT03559725
View directory record Official record
Conditions
Tobacco Use
Interventions
VLN menthol cigarettes (A), Usual Brand Menthol Cigarettes (B), Nicotine gum (C)
Other · Drug
Lead sponsor
22nd Century Group, Inc.
Industry
Eligibility
22 Years to 65 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 25, 2020 · Synced Oct 19, 2026, 5:30 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Evaluation of An Oral Fluid Collection Device

NCT02026440
View directory record Official record
Conditions
Smoking
Interventions
Not listed
Lead sponsor
Avioq, Inc.
Industry
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 3, 2014 · Synced Oct 19, 2026, 5:30 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Role of Inflammation in Vascular Phenotype Associated With E-cigarette Use

NCT06489249
View directory record Official record
Conditions
Electronic Cigarette Use, Endothelial Dysfunction, Inflammation
Interventions
Placebo, Salsalate 750 MG Oral Tablet [DISALCID]
Drug
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 24 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
2
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Study to Evaluate Changes in Smokers Using An Oral Tobacco-Derived Nicotine Product

NCT04079933
View directory record Official record
Conditions
Tobacco Use
Interventions
Oral tobacco-derived nicotine product (OTDN)
Other
Lead sponsor
Altria Client Services LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
154 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
3
States / cities
Daytona Beach, Florida • Evansville, Indiana • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 27, 2024 · Synced Oct 19, 2026, 5:30 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 19, 2026, 5:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tailored Inhibitory Control Training to Reverse EA-linked Deficits in Mid-life

NCT02945371
View directory record Official record
Conditions
Smoking, Alcohol Drinking, Prescription Drug Abuse, Substance-Related Disorders, Oral Intake Reduced
Interventions
Person-centered inhibitory control training, Active behavioral response training
Behavioral
Lead sponsor
University of Oregon
Other
Eligibility
35 Years to 55 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 26, 2016 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Phase 2 Interventional Results available

Combination Bupropion / Varenicline for Smoking Cessation in Male Smokers

NCT01806779
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Chantix, Zyban, Nicotine patches
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
376 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
4
States / cities
Charlotte, North Carolina • Durham, North Carolina • Raleigh, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2016 · Synced Oct 19, 2026, 5:30 PM EDT
Recruiting Not applicable Interventional

Pain and Smoking Study 2.0: A Randomized Clinical Trial of Smoking Cessation Among Veterans With Chronic Pain

NCT06442514
View directory record Official record
Conditions
Smoking, Pain, Smoking Cessation
Interventions
PASS2, Treatment as Usual
Behavioral · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Phase 4 Interventional Results available

Behavioral Activation and Varenicline for Smoking Cessation in Depressed Smokers

NCT02378714
View directory record Official record
Conditions
Nicotine Dependence, Major Depressive Disorder
Interventions
Varenicline, BASC, Standard treatment
Drug · Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
2
States / cities
Chicago, Illinois • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

E-Cigarettes and Financial Incentives to Promote Tobacco Harm Reduction Among Adults Accessing Shelter Services

NCT03743532
View directory record Official record
Conditions
Cigarette Smoking
Interventions
E-cigarette Switching, Financial Incentives
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
21 Years to 100 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Feb 21, 2025 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Phase 4 Interventional Results available

Prevention of Cigarette Smoking in Attention Deficit Hyperactivity Disorder (ADHD) Youth With Concerta

NCT00181714
View directory record Official record
Conditions
ADHD
Interventions
methylphenidate HCl (Concerta)
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
12 Years to 17 Years
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2011
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 7, 2013 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Phase 4 Interventional Results available

Identifying Treatments to Motivate Smokers to Quit

NCT01122238
View directory record Official record
Conditions
Smoking, Smoking Cessation, Motivation, Nicotine Dependence
Interventions
Nicotine Patch, Nicotine Gum, Motivational Interviewing, Smoking Reduction, No Intervention, Nicotine Patch + Nicotine Gum
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
517 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 16, 2015 · Synced Oct 19, 2026, 5:30 PM EDT
Recruiting Not applicable Interventional

Electronic Cigarettes as a Harm Reduction Strategy Among People With Opioid Use Disorder on Buprenorphine

NCT07202039
View directory record Official record
Conditions
Tobacco-flavored EC, Sweet-Cooling EC, Sweet Non-cooling EC
Interventions
Brief individual counseling sessions
Behavioral
Lead sponsor
Prisma Health-Upstate
Other
Eligibility
21 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Study of a Smartphone-Based Vaping Cessation Program

NCT05642598
View directory record Official record
Conditions
Vaping Cessation
Interventions
Pivot for Vape
Behavioral
Lead sponsor
Pivot Health Technologies Inc.
Industry
Eligibility
21 Years and older
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
San Carlos, California
Source: ClinicalTrials.gov public record
Updated Jan 31, 2025 · Synced Oct 19, 2026, 5:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Patch and Bupropion to Reduce Smoking Rates in Younger, Low-Income, and Minority Individuals

NCT00308763
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Nicotine Patch, Sustained Release Bupropion
Drug
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years to 45 Years
Enrollment
594 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated May 21, 2014 · Synced Oct 19, 2026, 5:30 PM EDT
Not listed Not applicable Interventional

Stage Ib Trial of mSMART for Smoking Cessation Medication Adherence

NCT02635919
View directory record Official record
Conditions
Nicotine Dependence
Interventions
mSMART
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 3, 2018 · Synced Oct 19, 2026, 5:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Examining Heavy Metal Exposure and Respiratory Health in Young Adult Electronic Cigarette Users

NCT07215065
View directory record Official record
Conditions
Heavy Metal Exposure From Vaping
Interventions
Non-Interventional Study
Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years to 29 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 20, 2026 · Synced Oct 19, 2026, 5:30 PM EDT