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ClinicalTrials.gov public records Last synced Oct 7, 2026, 12:00 AM EDT

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Showing 241–264 of 278 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Cigarette Smokers Clear all
Completed Phase 3 Interventional

Efficacy and Safety of Dianicline Treatment as an Aid to Smoking Cessation in Cigarette Smokers (AMERIDIAN)

NCT00387946
View directory record Official record
Conditions
Smoking Cessation, Tobacco Use Cessation
Interventions
SSR591813L (dianicline)
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
630 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 17, 2012 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Results available

Changes in Biomarker of Exposure in Adults Who Smoke Cigarettes Switching From Cigarettes to Heated Tobacco Products

NCT06179290
View directory record Official record
Conditions
Tobacco Use
Interventions
Ploom HTP Menthol HTS; MX3 (681), Ploom HTP Tobacco HTS; R8 (120), Smoking Abstinence (menthol), Smoking Abstinence (non-menthol)
Other
Lead sponsor
Altria Client Services LLC
Industry
Eligibility
22 Years to 65 Years
Enrollment
921 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
8
States / cities
Bentonville, Arkansas • Rogers, Arkansas • Overland Park, Kansas + 5 more
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cigarette Pack Inserts for Smoking Cessation

NCT04075682
View directory record Official record
Conditions
Smoking Cessation
Interventions
Inserts with efficacy messages, Pictorial warnings on packs
Other
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
387 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
2
States / cities
Ithaca, New York • Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated May 13, 2024 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Results available

Integrated Smoking Cessation Treatment for Smokers With Serious Mental Illness

NCT02845440
View directory record Official record
Conditions
Cigarette Smoking, Schizophrenia, Bipolar Disorder, Depressive Disorder, Major, Smoking Cessation
Interventions
Academic Detailing, Community Health Worker, Treatment as Usual (TAU)
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
1,165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 19, 2022 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Results available

E-cigarettes for Harm Reduction in Adults With Asthma

NCT05278065
View directory record Official record
Conditions
Smoking, Asthma, Electronic Cigarette Use, Cigarette Smoking
Interventions
Nicotine
Other
Lead sponsor
Brown University
Other
Eligibility
21 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Nov 18, 2025 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Phase 1 Interventional

Alcohol and Cigarette Craving During Oxytocin Treatment

NCT04071119
View directory record Official record
Conditions
Alcohol Use Disorder, Smoking
Interventions
Oxytocin nasal spray, Placebo
Drug
Lead sponsor
Brown University
Other
Eligibility
18 Years to 55 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated May 14, 2024 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

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

NCT04430634
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Myblu variant A, Myblu variant B, Myblu variant C, Myblu variant D, Myblu variant E, Myblu variant F, Myblu variant G, Myblu variant H
Other
Lead sponsor
Fontem US LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
40 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 7, 2026, 12:00 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Flavors and E-cigarette Effects in Adolescent Smokers- STUDY 2

NCT03168191
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Nicotine, Experimental Flavor, Menthol Flavor
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 20 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 4, 2020 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Changes in Biomarkers of Cigarette Smoke Exposure After Switching Either Exclusively or Partly to JUUL ENDS

NCT04107779
View directory record Official record
Conditions
Electronic Cigarette Use, Cigarette Use, Electronic, Tobacco Use, Tobacco Smoking
Interventions
Switch from UB of Combustible Cigarette to JUUL 5% Virginia Tobacco ENDS, Switch from UB of Combustible Cigarette to JUUL 3% Virginia Tobacco ENDS, Switch from UB of Combustible Cigarette to JUUL 5% Mint ENDS, Switch from UB of Combustible Cigarette to JUUL 3% Mint ENDS, Switch from UB of Combustible Cigarette to JUUL 5% Menthol ENDS, Switch from UB of Combustible Cigarette to JUUL 3% Menthol ENDS, Switch from UB of Combustible Cigarette to JUUL 5% Mango ENDS, Switch from UB of Combustible Cigarette to JUUL 3% Mango ENDS, Switch to Dual-use of JUUL 5% and UB of Combustible Cigarette, Tobacco/Nicotine Abstention, Usual Brand of cigarettes
Other
Lead sponsor
Juul Labs, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
279 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
5
States / cities
Little Rock, Arkansas • Rogers, Arkansas • St Louis, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2020 · Synced Oct 7, 2026, 12:00 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

A RCT to Determine the Effect of ENDS Flavor Availability on Abstinence Within Smokers

NCT07172438
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
P2611222, P2615022, P2615122, P2613422
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 65 Years
Enrollment
668 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
27
States / cities
Chandler, Arizona • Fort Smith, Arkansas • Altamonte Springs, Florida + 21 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Reduced Nicotine Cigarettes in Smokers With and Without Alcohol Use Disorder

NCT02990455
View directory record Official record
Conditions
Alcohol Drinking, Cigarette Smoking Toxicity
Interventions
Reduced nicotine cigarettes
Drug
Lead sponsor
Battelle Memorial Institute
Other
Eligibility
21 Years to 65 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 29, 2021 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Reaching and Treating Lesbian, Gay, Bisexual, and Transgender (LGBT) Cigarette Smokers

NCT00634218
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Mail-based Self-help plus Internet-based Smoking Treatment, Self-Help Manual plus Telephone counseling, Self-Help Manual, Self-Help Manual plus Internet-based Intervention plus Telephone Counseling
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
363 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 27, 2012 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD170302: Study to Assess Nicotine Uptake in Smokers From Electronic Cigarettes

NCT03233997
View directory record Official record
Conditions
Smoking
Interventions
FT21018, FT21033, FT21034, FT21035
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Lakewood, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 20, 2017 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional

Evaluating the Impact of Quitting Using Executive Function Strategy Training (QUEST) on Smoking Cessation in Homeless Young Adult Smokers

NCT06745154
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Biospecimen Collection, Cognitive Assessment, Interview, Nicotine Replacement, Smoking Cessation Intervention, Survey Administration, Tobacco Cessation Counseling
Procedure · Other · Drug + 1 more
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years to 24 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 20, 2024 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Results available

Impact of Switching to Non-Menthol Cigarettes Among Smokers

NCT03075839
View directory record Official record
Conditions
Tobacco Use
Interventions
Cigarette Brand Switching
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Validation of Biomarkers of Exposure and Host Response

NCT00468234
View directory record Official record
Conditions
Cigarette Smoker
Interventions
nicotine polacrilex, nicotine transdermal system, nicotine inhaler
Drug
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 31, 2023 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD170304: Study to Assess Nicotine Uptake in Smokers From Electronic and Combustible Cigarettes

NCT03294356
View directory record Official record
Conditions
Smoking
Interventions
FT210771, FT210751, 6T30134157764, G41A7C071, M011161212, FT21002
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
5
States / cities
Tempe, Arizona • Lexington, Kentucky • St Louis, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2017 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Phase 2Phase 3 Interventional Results available

New Treatment for Alcohol and Nicotine Dependence

NCT01182766
View directory record Official record
Conditions
Alcohol Dependence, Nicotine Dependence
Interventions
Low-Dose Topiramate, Placebo, High-Dose Topiramate
Drug
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
236 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
4
States / cities
La Jolla, California • Houston, Texas • Charlottesville, Virginia + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2025 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects Among Smokers Who Use and Do Not Use E-Cigarettes

NCT03511001
View directory record Official record
Conditions
Toxicant Exposure
Interventions
E-Cigarette Vs. Smoking as Usual
Other
Lead sponsor
California State University, San Marcos
Other
Eligibility
21 Years and older
Enrollment
187 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
2
States / cities
San Marcos, California • Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 12, 2021 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Predictors and Consequences of Combustible Cigarette Smokers' Switch to Standardized Research E-Cigarettes

NCT03277495
View directory record Official record
Conditions
Tobacco Use
Interventions
Brief behavioral counseling
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
21 Years and older
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Enhanced Smoking Cessation for University Students

NCT00941395
View directory record Official record
Conditions
Cigarette Smoker, Current Every Day Smoker
Interventions
Survey Administration
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years to 35 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2017
U.S. locations
2
States / cities
College Station, Texas • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 21, 2018 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Phase 4 Interventional Results available

Novel Pharmacotherapy Approaches in Smokers With Serious Mental Illness

NCT04011280
View directory record Official record
Conditions
Bipolar Disorder, Schizophrenia, Schizoaffective Disorder, Nicotine Dependence
Interventions
Varenicline
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 70 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Oct 7, 2026, 12:00 AM EDT
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
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Oct 7, 2026, 12:00 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Controlled Study of the Ability of a Smokefree Tobacco Product to Increase the Quit Rate Among Cigarette Smokers

NCT00843622
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Low-nitrosamine smokefree tobacco product for oral use, Non-tobacco, non-nicotine placebo product
Drug · Other
Lead sponsor
Swedish Match AB
Industry
Eligibility
25 Years to 65 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
4
States / cities
Daytona Beach, Florida • Evansville, Indiana • Portland, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2014 · Synced Oct 7, 2026, 12:00 AM EDT