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ClinicalTrials.gov public records Last synced Oct 4, 2026, 12:19 AM EDT

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Showing 145–168 of 278 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Cigarette Smokers Clear all
Completed Phase 2 Interventional

The Effects of One-Time Pregnenolone, Dehydroepiandrosterone (DHEA), or Placebo Administration On Withdrawal Symptoms, Mood, Craving And Cigarette Evaluation Ratings In Male Smokers

NCT00900900
View directory record Official record
Conditions
Substance Withdrawal Syndrome
Interventions
dehydroepiandrosterone (DHEA), pregnenolone, Placebo
Dietary Supplement · Drug
Lead sponsor
Jed E. Rose
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
2
States / cities
Durham, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 21, 2012 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of an Inhaled Glucocorticosteroid (ICS) on Endothelial Dysfunction in Cigarette Smokers

NCT01216735
View directory record Official record
Conditions
Tobacco Abuse Smoke
Interventions
Fluticasone, Placebo
Drug
Lead sponsor
University of Miami
Other
Eligibility
30 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 29, 2016 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional

Evaluating the Episodic Future Thinking Intervention for Reducing Cigarette Consumption in Cigarette Smokers

NCT05825001
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Smoking Cessation Intervention, Smoking Cessation Intervention (control), Medical Device Usage and Evaluation
Behavioral · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Oct 4, 2026, 12:19 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Evaluation of Acute and Subacute Effects of Nicotine Free Electronic Cigarette(NCFE) Vapors

NCT02585791
View directory record Official record
Conditions
Healthy Lifetime Non-smokers
Interventions
Propylene Glycol, vegetable glycerin, PG+VG
Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 14, 2020 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Smokers' Response to Nicotine Dependence Genotyping

NCT01780038
View directory record Official record
Conditions
Cigarette Smoking, Nicotine Dependence
Interventions
Receipt of Genetic Results, No results given
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 31, 2024 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional Results available

Comparative Effectiveness of Post-Discharge Strategies for Hospitalized Smokers

NCT01714323
View directory record Official record
Conditions
Cigarette Smoking, Tobacco Smoking, Tobacco Use Disorder
Interventions
Sustained Care, Standard Care
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
1,359 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
3
States / cities
Boston, Massachusetts • Salem, Massachusetts • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 8, 2018 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assess Biomarkers of Tobacco Exposure and Nicotine Pharmacokinetics in Smokers After a 5-Day In-Clinic Confinement Switch to an Electronic Cigarette or Nicotine Gum

NCT02323438
View directory record Official record
Conditions
Smoking
Interventions
Usual Brand Cigarette, Electronic Cigarette #1, Electronic Cigarette #2, Leading U.S. Nicotine Gum
Other
Lead sponsor
R.J. Reynolds Vapor Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
153 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 1, 2018 · Synced Oct 4, 2026, 12:19 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Effects of Electronic Cigarettes on Lung Biology

NCT02188511
View directory record Official record
Conditions
Lung Disease, Lung Disorder
Interventions
Group A, Group B, Group C, Group D, Group E
Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
21 Years to 85 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 24, 2020 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Switching to Low Oxidant Content Cigarettes in Adult Smokers

NCT03102931
View directory record Official record
Conditions
Nicotine, Oxidative Stress
Interventions
Reduced ROS/RNS content products, Typical to high (ROS/NOS) products
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 4, 2019 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tailored Smoking Cessation Intervention in Promoting Sexual and Gender Minority Smokers to Quit Smoking

NCT03669120
View directory record Official record
Conditions
Cigarette Smoker, Current Every Day Smoker
Interventions
Informational Intervention, Telephone-Based Intervention
Other · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 2, 2020 · Synced Oct 4, 2026, 12:19 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 4, 2026, 12:19 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Staccato Loxapine PK in Smokers and Nonsmokers

NCT00873769
View directory record Official record
Conditions
Smoking, Cigarette
Interventions
Inhaled Loxapine 10 mg
Drug
Lead sponsor
Alexza Pharmaceuticals, Inc.
Other
Eligibility
20 Years to 50 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Evansville, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 15, 2017 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional

Evaluation of Cessation Preferences of Menthol Smoker

NCT02020005
View directory record Official record
Conditions
Smoking Cessation
Interventions
Non-flavored 2mg nicotine gum, Non-flavored 4mg nicotine gum, Mint-flavored 2mg nicotine gum, Mint-flavored 4mg nicotine gum, Non-flavored nicotine inhaler, Mint-flavored nicotine ihaler
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 3, 2025 · Synced Oct 4, 2026, 12:19 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cardiovascular Disease Biomarkers in Smokers and Moist Snuff Consumers

NCT01692353
View directory record Official record
Conditions
Cardiovascular Disease, Cigarette Smoking
Interventions
Subject's usual brand (UB) tobacco product
Other
Lead sponsor
R.J. Reynolds Tobacco Company
Industry
Eligibility
26 Years to 49 Years · Male only
Enrollment
168 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Feb 17, 2016 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Very Low Nicotine Content Cigarettes and E-Cigarettes in Promoting Smoking Cessation in Daily and Intermittent Cigarette Smokers

NCT02964182
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Oct 4, 2026, 12:19 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Step-up to Quit: Using Low-to-moderate Intensity Exercise for Reducing Smoking Cue Reactivity Among Low-income Smokers

NCT02220465
View directory record Official record
Conditions
Sedentary Lifestyle, Cigarette Smoking
Interventions
PA+ Smoking Cessation (LMPA), Standard Care Smoking Counseling (SCC)
Behavioral
Lead sponsor
Temple University
Other
Eligibility
18 Years to 59 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 20, 2014 · Synced Oct 4, 2026, 12:19 AM EDT
Completed No phase listed Observational

Breath Carbon Monoxide and Cotinine as Biomarkers to Distinguish Smokers From Nonsmokers

NCT01031121
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 4, 2026, 12:19 AM 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 4, 2026, 12:19 AM EDT
Completed Early Phase 1 Interventional

Informing the Adaptation of a CHW Model to Facilitate Lung Cancer Screening for the Chinese Community

NCT02914899
View directory record Official record
Conditions
Lung Cancer Screening, Current or Past Cigarette Smoker
Interventions
Surveys, Navigation, Focus groups, In-depth interviews
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
21 Years to 80 Years
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 21, 2025 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Evaluation of Canakinumab in High-Risk Former-Smokers

NCT06038526
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma, Lung Carcinoma
Interventions
Biospecimen Collection, Bronchoscopy, Canakinumab, Carbon Monoxide Measurement, Survey Administration
Procedure · Biological · Other
Lead sponsor
Peter Shields
Other
Eligibility
40 Years to 73 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Electronic Cigarette Settings and Liquid Concentrations in Cigarette Smokers and Electronic Cigarette Users

NCT03710590
View directory record Official record
Conditions
Electronic Cigarettes
Interventions
ECIG Lab Session 15 watts, 10 mg nicotine, ECIG Lab Session 15 watts, 15 mg nicotine, ECIG Lab Session 15 watts, 30 mg nicotine, ECIG Lab Session 30 watts, 10 mg nicotine, ECIG Lab Session 30 watts, 15 mg nicotine, ECIG Lab Session 30 watts, 30 mg nicotine
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 55 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 6, 2022 · Synced Oct 4, 2026, 12:19 AM 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 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional

Testing Methods of Self-persuasion Involving Cigarette Smoking

NCT02069483
View directory record Official record
Conditions
Smoking
Interventions
Motivational Interviewing, Tailored Feedback
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 26, 2014 · Synced Oct 4, 2026, 12:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Characterize Nicotine Pharmacokinetics and Subjective Effects of Nicotine Pouches in Adult Cigarette Smokers

NCT04846088
View directory record Official record
Conditions
Tobacco Use, Tobacco Smoking
Interventions
Product A, Product B, Product C, Product D, Product E, Product F, Product G, Product H, Product I
Other
Lead sponsor
British American Tobacco (Investments) Limited
Industry
Eligibility
22 Years to 65 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 7, 2022 · Synced Oct 4, 2026, 12:19 AM EDT