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ClinicalTrials.gov public records Last synced Oct 27, 2026, 6:37 PM EDT

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Showing 1201–1224 of 2,082 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Smoking Behavior Clear all
Completed Not applicable Interventional Results available

Pharmacist Intervention to Improve Smoking Cessation

NCT06943287
View directory record Official record
Conditions
Smoking Cessation
Interventions
Pharmacist Intervention
Behavioral
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 100 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

User Acceptability of a Nicotine Lactate Delivery System (P3L)

NCT02643693
View directory record Official record
Conditions
Smoking
Interventions
P3L, VUSE, CC
Other
Lead sponsor
Philip Morris Products S.A.
Industry
Eligibility
19 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 1, 2019 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Developing and Pilot Testing an Intervention to Reduce Household Shisha Smoke Exposure Within Somali Homes

NCT06316947
View directory record Official record
Conditions
Shisha
Interventions
CHW-delivered intervention
Radiation
Lead sponsor
University of Minnesota
Other
Eligibility
6 Months and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Oct 27, 2026, 6:37 PM EDT
Withdrawn Phase 4 Interventional

Treating Schizophrenic Smokers: Effects on Craving, Cues and Withdrawal

NCT00781755
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
varenicline, Adaptation of Motivational Interviewing
Drug · Behavioral
Lead sponsor
VA Boston Healthcare System
Federal
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Brockton, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 4, 2015 · Synced Oct 27, 2026, 6:37 PM EDT
Recruiting Not applicable Interventional

Opioids, Low Nicotine Cigarettes, and Chronic Pain

NCT06747871
View directory record Official record
Conditions
Chronic Pain, Tobacco Use, Opioid Substitution Treatment
Interventions
Very Low Nicotine Cigarettes (VLNC), Normal Nicotine Cigarettes (NNC)
Behavioral
Lead sponsor
Duke University
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 9, 2026 · Synced Oct 27, 2026, 6:37 PM EDT
Terminated Not applicable Interventional Results available

tDCS and Cognitive Training Intervention for Chronic Smokers With Schizophrenia

NCT03588728
View directory record Official record
Conditions
Transcranial Direct Current Stimulation, Smoking, Cigarette, Schizophrenia
Interventions
Transcranial Direct Current Stimulation, Cognitive Remediation (CR)
Other · Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 13, 2023 · Synced Oct 27, 2026, 6:37 PM EDT
Terminated Phase 4 Interventional

Extended Duration Nicotine Replacement Therapy and Bupropion in Smokers With Schizophrenia

NCT01576640
View directory record Official record
Conditions
Nicotine Dependence, Schizophrenia
Interventions
NRT, Bupropion SR 150mg bid, Relapse Prevention-Oriented Cognitive Behavioral Therapy
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 21, 2015 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Phase 2 Interventional Results available

Varenicline for Treatment of E-cigarette Dependence

NCT05541497
View directory record Official record
Conditions
Smoking Cessation
Interventions
Varenicline Tartrate, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
New Haven, Connecticut • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 2, 2024 · Synced Oct 27, 2026, 6:37 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Digitally Enhanced Smoking Cessation for High Risk Smokers

NCT04691297
View directory record Official record
Conditions
Smoking, Smoking Cessation, Lung Cancer Screening, Smoking, Tobacco, Smoking Behaviors
Interventions
Escape, Standard Care
Other
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
55 Years to 77 Years
Enrollment
153 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Effect of Lorcaserin Hydrochloride on Smoking Cessation

NCT02044874
View directory record Official record
Conditions
Smoking Cessation
Interventions
APD356-lorcaserin hydrochloride, Placebo
Drug
Lead sponsor
Arena Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Enrollment
603 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
31
States / cities
Encino, California • Escondido, California • Los Alamitos, California + 27 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2019 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Not applicable Interventional

Project HEALS (Helping and Empowering pAtients for Living a Life Smoke-free

NCT05362318
View directory record Official record
Conditions
Smoking, Tobacco Use, Lung Cancer
Interventions
Nicotine patch and lozenges, Telephone counseling sessions, Access to a web-based video, Florida Tobacco Quitline
Drug · Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

BRP1802 Smoking Abstinence Study

NCT04979013
View directory record Official record
Conditions
Smoking, Smoking Cessation, Tobacco Use
Interventions
Smoking Abstinence
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
24 Years to 60 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jul 27, 2021 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Not applicable Interventional Results available

Acceptance and Commitment Therapy for Tobacco Cessation Among Psychiatric Partial Hospital Patients

NCT03911960
View directory record Official record
Conditions
Tobacco Smoking, Psychiatric Disorder, Psychiatric Hospitalization
Interventions
Acceptance and Commitment Therapy, Enhanced Usual Care
Behavioral
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 25, 2020 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Not applicable Interventional

Salvation Army Tobacco Quit Line Referral Implementation Trial

NCT06689774
View directory record Official record
Conditions
Tobacco Use, Smoking, Smoking Cessation
Interventions
Cognitive-Motivational Feedback, Staff Tobacco Quit Line Referral Implementation Support, Consumer Incentives for Immediate Referral to a Tobacco Quit Line
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Assessing the Effect of Nicotine Reduction on ENDS User's Addiction and Exposures

NCT05205382
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
5% nicotine (Partial Nicotine Reduction), 3% or 2.4% nicotine (Partial Nicotine Reduction), 5% nicotine (Total Nicotine Reduction), 0% nicotine (Total Nicotine Reduction)
Other
Lead sponsor
Florida International University
Other
Eligibility
21 Years to 35 Years
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 27, 2026, 6:37 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Mechanisms of Lorcaserin for Smoking Cessation

NCT04396834
View directory record Official record
Conditions
Tobacco Use Disorder, Smoking Cessation
Interventions
Lorcaserin Oral Tablet, Placebo oral tablet
Drug
Lead sponsor
The Mind Research Network
Other
Eligibility
18 Years to 65 Years
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 20, 2023 · Synced Oct 27, 2026, 6:37 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Genetic Factors and Interrelationships for Cancer Risk-Related Behaviors and Complex Traits

NCT00001500
View directory record Official record
Conditions
Acquired Immunodeficiency Syndrome, Alcoholism, HIV Infection, Neoplasm, Smoking
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
4,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1996 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Menthol as Delivered by an Electronic Cigarette on the Desirability of Nicotine in Tobacco Users

NCT02102100
View directory record Official record
Conditions
Nicotine Dependence
Interventions
nicotine, menthol
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 30 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
2
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 19, 2020 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Mechanisms of Mindfulness for Smoking Cessation

NCT02943499
View directory record Official record
Conditions
Smoking Cessation
Interventions
App/Training, Smartphone
Behavioral · Device
Lead sponsor
Brown University
Other
Eligibility
21 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 19, 2019 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Phase 4 Interventional Results available

Helping Those With Mental Illness Quit Smoking

NCT01783912
View directory record Official record
Conditions
Smoking, Nicotine Dependence, Mental Disorders
Interventions
Cognitive / Motivational Individual Sessions, Attention Control Individual Sessions, Nicotine Patch, Group Curriculum
Behavioral · Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 29, 2016 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Early Phase 1 Interventional Results available

Imaging the Neurochemistry of Drug Addiction With PET

NCT02817698
View directory record Official record
Conditions
Smoking, Cannabis
Interventions
cannabis
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
3
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Oct 27, 2026, 6:37 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 16, 2017 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Combined Pharmaco/Behavior Therapy in Adolescent Smokers

NCT00330187
View directory record Official record
Conditions
Nicotine Dependence, Nicotine Use Disorder
Interventions
Bupropion SR, Contingency Management, Placebo
Drug · Behavioral · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
12 Years to 21 Years
Enrollment
134 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 2, 2018 · Synced Oct 27, 2026, 6:37 PM EDT
Completed Phase 1 Interventional

Three Dosing Regimens of Dextromethorphan (DXM) Reportedly Used in Major Depressive Disorder

NCT04226352
View directory record Official record
Conditions
MDD, Treatment Resistant Depression, Smoking Cessation, Smoking
Interventions
Dextromethorphan
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 50 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 4, 2022 · Synced Oct 27, 2026, 6:37 PM EDT