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Showing 1–24 of 1,519 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Tobacco Use Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Text-based Reduction Intervention for Smokeless Tobacco Cessation

NCT04315506
View directory record Official record
Conditions
Smokeless Tobacco Cessation
Interventions
#EnufSnuff.TXT Intervention, Enough Snuff Intervention
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
532 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 16, 2024 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Enhancing Source Credibility in Tobacco Regulatory Communications

NCT03339206
View directory record Official record
Conditions
Cigarette Smoking Behavior
Interventions
Constituent message with FDA and quitline, Constituent message without FDA and quitline, Littering message (Control)
Behavioral
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years to 65 Years
Enrollment
845 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 23, 2020 · Synced Jul 20, 2026, 6:41 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 12, 2026 · Synced Jul 20, 2026, 6:41 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Use of Nicotine Pouches Among Daily Smokers

NCT06043362
View directory record Official record
Conditions
Tobacco Dependence
Interventions
0 mg nicotine pouch, 3 mg nicotine pouch, 6 mg nicotine pouch, Smooth nicotine pouch, Wintergreen nicotine pouch
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
21 Years to 70 Years
Enrollment
375 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
2
States / cities
Hershey, Pennsylvania • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparison of Internet Stop Smoking Intervention to Usual Care on Smoking Cessation at 6 Months

NCT01639079
View directory record Official record
Conditions
Cigarette Smoking, Nicotine Dependence
Interventions
Internet Smoking Cessation Web Site
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 90 Years
Enrollment
146 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 14, 2018 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional

Evaluating a Web-Based Cardiovascular Disease Risk Factor Reduction Program Among American Indians

NCT00608387
View directory record Official record
Conditions
Cardiovascular Diseases, Diabetes Mellitus, Type 2, Hypertension, Obesity, Tobacco Use Cessation
Interventions
Chronic disease management Web-based software
Behavioral
Lead sponsor
Black Hills Center for American Indian Health
Other
Eligibility
18 Years to 75 Years
Enrollment
149 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Rapid City, South Dakota
Source: ClinicalTrials.gov public record
Updated Jun 3, 2014 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Tobacco, Alcohol, Prescription Medication and Other Substances Tool

NCT02110693
View directory record Official record
Conditions
Substance Use Disorder
Interventions
Interviewer and tablet administration of the TAPS Tool
Other
Lead sponsor
Friends Research Institute, Inc.
Other
Eligibility
18 Years and older
Enrollment
2,057 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
4
States / cities
Baltimore, Maryland • New York, New York • Kannapolis, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2018 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Lozenges and Assisted Self-help for Smokeless Tobacco Cessation

NCT01341938
View directory record Official record
Conditions
Smokeless Tobacco Cessation
Interventions
Commit® nicotine lozenges (4 mg) & self-help materials, Commit® nicotine lozenges (4 mg) & phone counseling & self-help materials, Phone counseling & self-help materials
Drug · Behavioral
Lead sponsor
Oregon Research Institute
Other
Eligibility
18 Years and older
Enrollment
1,067 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 3, 2021 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Phase 4 Interventional

Smoking Study With Behavioral Therapy for Hypertensive Patients

NCT00879177
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 9, 2017 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Results available

Enhancing a High School Based Smoking Cessation Program

NCT01145001
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Cognitive Behavioural Therapy, Contingency Management, Nicotine Transdermal Patch
Behavioral · Drug
Lead sponsor
Yale University
Other
Eligibility
14 Years to 19 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 28, 2016 · Synced Jul 20, 2026, 6:41 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Computer Game, Qualitative, and MEG/EEG Assessment of Serotonergic Psychedelics

NCT06624137
View directory record Official record
Conditions
OCD, Major Depressive Disorder (MDD), Alcohol Use Disorder (AUD), Healthy Volunteer, Migraine, PTSD, PTSD - Post Traumatic Stress Disorder, Addiction, Tobacco Use Disorder, Obsessive Compulsive Disorder (OCD), Opioid Use Disorder
Interventions
Serotonergic Psychedelic, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
2
States / cities
Hamden, Connecticut • West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing the Efficacy of A Scalable, Telephone-Delivered, Guided Imagery Tobacco Cessation Intervention

NCT05277831
View directory record Official record
Conditions
Smoking Cessation, Smoking, Smoking Reduction, Smoking, Cigarette, Smoking (Tobacco) Addiction, Smoking Habit
Interventions
Guided Imagery Intervention, Standard Behavioral Control
Other
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
1,209 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Electronic Cigarette Use in Young Adult Men and Women

NCT03089541
View directory record Official record
Conditions
Cigarette Smoking, Tobacco Use
Interventions
Survey Arm
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 29 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 2, 2023 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD200902: Assessment of Indoor Air Quality for a Heated Tobacco Product With Four Non-Combusted Cigarette Variants in an Environmental Testing Chamber

NCT05363254
View directory record Official record
Conditions
Tobacco Use, Smoking, Tobacco Smoking
Interventions
Marlboro Gold Box, Newport Box, 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
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Stockbridge, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 29, 2024 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Phase 4 Interventional Results available

Identifying Optimal Smoking Cessation Intervention Components (Cessation)

NCT01116986
View directory record Official record
Conditions
Smoking, Smoking Cessation, Nicotine Dependence
Interventions
Counseling before quit attempt, Minimal In-person counseling during quit attempt, Intensive in-person counseling during the quit attempt, Minimal phone counseling during the quit attempt, Intensive phone counseling during the quit attempt, Long Term Nicotine Patch+ Nicotine Gum During Quit Attempt, Short Term Nicotine Patch + Nicotine Gum during the quit attempt, Pre-Quit Nicotine Gum, Pre-Quit Nicotine Patch, Pre-Quit Nicotine Patch + Pre-Quit Nicotine Gum
Behavioral · Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
637 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 10, 2015 · Synced Jul 20, 2026, 6:41 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Clinical Trial of Adaptive Treatment for Early Smoking Cessation Relapse

NCT06118502
View directory record Official record
Conditions
Cigarette Smoking, Smoking Behaviors, Treatment
Interventions
Switching to a different medication, Continued use of the same medication, Switching to a harm reduction tobacco product
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
544 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional

Identify the Usefulness of In-person and Virtual Quit Smoking Programs

NCT05181072
View directory record Official record
Conditions
Cigarette Smoking, Tobacco Use
Interventions
Enhanced in-person peer-motivation smoking cessation, Virtual peer-motivation smoking cessation
Behavioral
Lead sponsor
Morgan State University
Other
Eligibility
21 Years and older
Enrollment
392 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 28, 2024 · Synced Jul 20, 2026, 6:41 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Experimental Tobacco Marketplace in Regulating Flavored Tobacco Products in Menthol Cigarette Smokers

NCT03897530
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Smoking Cessation Intervention, Functional Assessment, Questionnaire Administration
Behavioral · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 2, 2024 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Neuroimaging Approach to Advance Mechanistic Understanding of Tobacco Use Escalation Risk Among Young Adult African American Vapers

NCT05829863
View directory record Official record
Conditions
Message Exposure
Interventions
educational message exposure
Behavioral
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 29 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Jul 20, 2026, 6:41 PM EDT
Completed No phase listed Observational

Testing the Decoy Effect to Increase Tobacco Treatment Uptake

NCT04200157
View directory record Official record
Conditions
Tobacco Smoking
Interventions
Online survey
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 14, 2023 · Synced Jul 20, 2026, 6:41 PM EDT
Withdrawn Not applicable Interventional

Korean Youth Smoking Cessation Study

NCT02021175
View directory record Official record
Conditions
Smoking
Interventions
Tailored CBME Therapy via Technology, Standard of Care
Behavioral · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
14 Years to 19 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 24, 2020 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

GABA (Gamma Amino Butyric Acid) Medication for Tobacco

NCT00644137
View directory record Official record
Conditions
Nicotine Dependence
Interventions
pregabalin, cigarettes
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 1, 2020 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of FDA Authorized Smokeless Tobacco Claims Among US Adults Who Smoke Cigarettes

NCT06927700
View directory record Official record
Conditions
Tobacco Product Beliefs and Use
Interventions
Modified Risk Claim Type - None, Product Brand - General Snus, Product Brand - Copenhagen, Modified Risk Claim Type - Multiple Diseases, Modified Risk Claim Type - Lung Cancer
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
21 Years and older
Enrollment
1,257 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Jul 20, 2026, 6:41 PM EDT
Completed Not applicable Interventional

Testing the Effect of ENDS Flavors on Neurotransmission

NCT05836051
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Flavor
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
21 Years to 60 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 24, 2025 · Synced Jul 20, 2026, 6:41 PM EDT