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Showing 1–24 of 2,066 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Tobacco Smoking Behavior Clear all
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Assess the Pharmacokinetics of Oral Nicotine Pouches and Lozenges in Healthy Adults

NCT04755348
View directory record Official record
Conditions
Tobacco Use, Tobacco Smoking, Cigarette Smoking
Interventions
Product A, Product B, Product C, Product D, Product E, Product F
Other
Lead sponsor
British American Tobacco (Investments) Limited
Industry
Eligibility
21 Years to 60 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 29, 2021 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Phase 4 Interventional

Effect of Switch to Aripiprazole on Health and Smoking Parameters in Patients With Schizophrenia: A Pilot Study

NCT00167817
View directory record Official record
Conditions
Schizophrenia
Interventions
Aripiprazole
Drug
Lead sponsor
Veterans Medical Research Foundation
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 18, 2007 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Topiramate Alone and in Combination With the Nicotine Patch for Smoking Cessation: A Pilot Study

NCT00755716
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Placebo (sugar pill), Topiramate, Nicotine patch
Drug
Lead sponsor
UConn Health
Other
Eligibility
18 Years to 65 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2013
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 15, 2017 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Determination of Liquid Flavor and Nicotine Form Outcomes

NCT05587504
View directory record Official record
Conditions
Electronic Cigarettes
Interventions
E-cigarette with sweetness type 1 and pronation level 1, E-cigarette with sweetness type 1 and pronation level 2, E-cigarette with sweetness type 2 and pronation level 1, E-cigarette with sweetness type 2 and pronation level 2
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 14, 2026, 3:19 PM 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 May 31, 2018 · Synced Sep 14, 2026, 3:19 PM EDT
Not yet recruiting Not applicable Interventional

Deep Transcranial Magnetic Stimulation for Tobacco Cessation in Adults With Opioid Use Disorder

NCT07770555
View directory record Official record
Conditions
Opioid Use Disorder, Tobacco Use Disorder
Interventions
Deep TMS System With H4 Coil
Device
Lead sponsor
Payel Roy
Other
Eligibility
22 Years to 70 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Results available

Effect of Smoking Exposure on Smoking Relapse Following Brief Abstinence - 2

NCT00136838
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Neutral or active cigarette cues
Behavioral
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 17, 2018 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Results available

Trial on the Effectiveness of Mindfulness Training for Smokers

NCT01093599
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Quit Line plus MTS, Quit Line Only
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
196 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 19, 2015 · Synced Sep 14, 2026, 3:19 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Investigation of the Effects of Electronic Cigarettes on Vascular Health

NCT03041493
View directory record Official record
Conditions
Vascular Health
Interventions
Electronic cigarette, traditional cigarette, (sham cigarette) - no actual exposure to cigarettes
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 17, 2021 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A Comparison of Bupropion SR and Placebo for Smoking Cessation

NCT00176449
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Bupropion SR, Placebo Oral Tablet
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 64 Years · Female only
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2005
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 15, 2019 · Synced Sep 14, 2026, 3:19 PM EDT
Withdrawn Early Phase 1 Interventional Accepts healthy volunteers

Health Literacy and Smoking Cessation in Low-SES Diverse Smokers - Project HALT II

NCT02942212
View directory record Official record
Conditions
Smoking Cessation
Interventions
Questionnaire, In-Depth Interviews, Breath Test, Nicotine Patches, Advice plus Phone Counseling, Advice plus Counseling Sessions, Self Assessment Questionnaires
Behavioral · Other · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
25 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 30, 2019 · Synced Sep 14, 2026, 3:19 PM EDT
Completed No phase listed Observational

Biobank for African American Prostate Cancer Research in Florida

NCT03232411
View directory record Official record
Conditions
Prostate Cancer
Interventions
Questionnaires, Saliva Samples, Tumor Tissue
Other
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
20 Years and older · Male only
Enrollment
592 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Technology-Enhanced Quitline Services to Prevent Smoking Relapse

NCT00888992
View directory record Official record
Conditions
Smoking Cessation
Interventions
Quitline Service + 10 automated monitoring calls, Quitline service + 20 automated monitoring calls
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
1,785 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 2, 2015 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Preventing Postpartum Relapse to Smoking Using Yoga and Cognitive Behavioral Therapy: A Randomized Pilot Study

NCT00360581
View directory record Official record
Conditions
Smoking Cessation
Interventions
Yoga, Yoga and Cognitive Behavioral Therapy
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 10, 2008 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Latinos Kick Buts: Mobile Engagement and Cessation Support for Latinos Who Smoke

NCT05722132
View directory record Official record
Conditions
Smoking Cessation
Interventions
One cycle, 4 cycles, 5 Dollar Incentive, Raffle Incentive
Behavioral
Lead sponsor
University of Rochester
Other
Eligibility
21 Years and older
Enrollment
2,826 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2023 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Phase 3 Interventional

A Second Study of NicVAX/Placebo as an Aid for Smoking Cessation

NCT01102114
View directory record Official record
Conditions
Smoking Cessation
Interventions
NicVAX Vaccine, Placebo Vaccine
Biological
Lead sponsor
Nabi Biopharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
25
States / cities
Encino, California • Los Alamitos, California • Denver, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated May 8, 2012 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Family-Based Approach To Reduce Smoking in Vietnamese Men

NCT02007707
View directory record Official record
Conditions
Tobacco Use Cessation, Healthy Eating
Interventions
Tobacco LHW, Healthy Eating
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
214 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
2
States / cities
San Jose, California • Santa Clara, California
Source: ClinicalTrials.gov public record
Updated Aug 5, 2019 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Vaporized Nicotine and Autonomic Control

NCT04613609
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Electronic Cigarette containing nicotine, Electronic Cigarette without nicotine
Device
Lead sponsor
Michigan Technological University
Other
Eligibility
21 Years to 40 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Houghton, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 2, 2020 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Results available

Financial Incentives for Smoking Cessation Among Mothers

NCT05740098
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Best Practices, Financial Incentives, Nicotine Replacement Therapy
Behavioral · Drug
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older · Female only
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jul 27, 2023 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Let's STOP Now Trial: Smoking in Trauma Orthopaedic Patients

NCT02428244
View directory record Official record
Conditions
Smoking, Tobacco, Fractures, Bone
Interventions
Motivational Interviewing, Motivational Interviewing + Follow-up
Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 79 Years
Enrollment
269 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 11, 2019 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Yoga for Smoking Cessation Feasibility Study

NCT01030068
View directory record Official record
Conditions
Smoking Cessation
Interventions
Yoga, Wellness, Smoking cessation therapy
Behavioral · Other
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Oct 6, 2011 · Synced Sep 14, 2026, 3:19 PM EDT
Recruiting Not applicable Interventional

Parents Helping Parents for Youth Vaping Cessation

NCT07207850
View directory record Official record
Conditions
Implementation Science, Engagement, Patient, E Cigarette Use, Peer Support, Vaping Teens, Vaping Cessation, Parent Support
Interventions
Parents Helping Parents program
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
15 Years to 18 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Contingency Management for Smoking Cessation in Homeless Smokers

NCT01789710
View directory record Official record
Conditions
Smoking, Homeless Persons
Interventions
Bupropion, Nicotine replacement therapy, Contingency Management
Drug · Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 14, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Electronic Cigarette Use on the Lungs

NCT02596685
View directory record Official record
Conditions
Current Smoker, Never Smoker, Tobacco Use Disorder, Former Smoker, E-cig User
Interventions
Bronchoscopy, Electronic Cigarette, Laboratory Biomarker Analysis, Questionnaire Administration
Procedure · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 45 Years
Enrollment
142 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 29, 2024 · Synced Sep 14, 2026, 3:19 PM EDT