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Showing 1–24 of 50 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Tobacco Withdrawal Clear all
Completed Phase 1Phase 2 Interventional Results available

Zonisamide Augmentation of Varenicline Treatment for Smoking Cessation

NCT01685996
View directory record Official record
Conditions
Nicotine Dependence
Interventions
zonisamide, placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 65 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 23, 2018 · Synced Sep 14, 2026, 7:54 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Nicotine Withdrawal and Reward Processing: Connecting Neurobiology to Real-world Behavior

NCT03840694
View directory record Official record
Conditions
Cigarette Smoking, Nicotine Withdrawal
Interventions
Smoking Abstinence, Ad Lib Smoking
Other
Lead sponsor
Duke University
Other
Eligibility
21 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 19, 2021 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Project 3, Study 2: Extended Exposure to Low Nicotine Content Cigarettes in People With Current Affective Disorders

NCT02232737
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Very low nicotine content cigarettes
Other
Lead sponsor
Brown University
Other
Eligibility
18 Years to 70 Years
Enrollment
775 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
2
States / cities
Providence, Rhode Island • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Dec 6, 2022 · Synced Sep 14, 2026, 7:54 AM EDT
Recruiting Phase 1Phase 2 Interventional

Overcoming Nicotine Dependence to Enable Quitting

NCT05513872
View directory record Official record
Conditions
Tobacco Use, Smoking Cessation, Smoking Behaviors, Nicotine Dependence, Nicotine Withdrawal
Interventions
Nicotine Replacement Therapy (NRT) Sampling, Practice Quitting (PQ) Counseling, Motivational Interviewing (MI) Counseling
Drug · Behavioral
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
780 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 2 Interventional Results available

Neural Substrates in Nicotine Withdrawal

NCT01001520
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Tolcapone, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
218 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 1, 2014 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

THC Crossover Study

NCT04429568
View directory record Official record
Conditions
THC, Cannabis, Cannabis Smoking, Cannabis Use, Unspecified, Cigarette Smoking, Tobacco Use, Nicotine Dependence, Nicotine Withdrawal, Cardiovascular Risk Factor
Interventions
Smoked Cannabis, Vaped Cannabis, Tobacco Cigarette
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 30, 2024 · Synced Sep 14, 2026, 7:54 AM EDT
Terminated Phase 2 Interventional Results available

Baclofen Effects on Smoking Urge and Withdrawal

NCT00257894
View directory record Official record
Conditions
Nicotine Use Disorder, Nicotine Dependence, Smoking, Tobacco Use Disorder
Interventions
Baclofen, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Nov 3, 2015 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Medications Development for the Treatment of Cannabis Related Disorders

NCT01204723
View directory record Official record
Conditions
Nicotine Withdrawal, Marijuana Dependence, Cannabis Dependence, Nicotine Dependence, Cannabis Abuse
Interventions
Placebo Aprepitant, Active Aprepitant
Drug
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 45 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
2
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 31, 2012 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Acute Pharmacokinetic and Pharmacodynamic Effects of "Tobacco-Free" Oral Nicotine Pouches in Smokers

NCT05335915
View directory record Official record
Conditions
Nicotine Withdrawal, Nicotine Addiction, Drug Effect
Interventions
Nicotine, Cigarette
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years and older
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effect of Quetiapine on Marijuana Withdrawal and Relapse

NCT00743366
View directory record Official record
Conditions
Marijuana Smoking
Interventions
Marijuana, Quetiapine, Placebo oral capsule
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 17, 2017 · Synced Sep 14, 2026, 7:54 AM EDT
Completed No phase listed Observational

Physiological, Cognitive and Cerebral Activity Changes as a Function of Cigarette Smoking (With or Without Nicotine) and Tobacco Abstinence

NCT01034384
View directory record Official record
Conditions
Smoking Cessation
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 50 Years
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Transcranial Direct Current Stimulation on Tobacco Withdrawal Symptoms

NCT01567982
View directory record Official record
Conditions
Nicotine Withdrawal, Tobacco Abstinence
Interventions
tDCS, prefrontal cortex and parietal cortex
Device
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 14, 2015 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Not applicable Interventional Results available

Racial Differences in Circadian and Sleep Mechanisms for Nicotine Dependence, Craving, and Withdrawal

NCT03968900
View directory record Official record
Conditions
Smoking, Sleep Disturbance, Nicotine Dependence
Interventions
Sleep restriction condition, Sleep extension condition
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Varenicline OTC Trial on Efficacy and Safety

NCT03557294
View directory record Official record
Conditions
Tobacco Dependence, Withdrawal Symptoms, Smoking Cessation
Interventions
1.0mg Varenicline b.i.d., 0.5mg Varenicline b.i.d., 0.0mg placebo Varenicline b.i.d.
Drug
Lead sponsor
Arizona State University
Other
Eligibility
21 Years and older
Enrollment
313 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
2
States / cities
Phoenix, Arizona • Burbank, California
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 14, 2026, 7:54 AM EDT
Recruiting Phase 1 Interventional

Effects of Cannabidiol on Stress and Nicotine Withdrawal

NCT07001930
View directory record Official record
Conditions
CBD, Stress, Nicotine Dependence, Tobacco Smoking
Interventions
Epidiolex
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 70 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effects of Transdermal Nicotine on Smoking, Craving and Withdrawal in People With Schizophrenia

NCT00218218
View directory record Official record
Conditions
Schizophrenia and Disorders With Psychotic Features, Tobacco Use Disorder, Schizophrenia
Interventions
Transdermal Nicotine Patch, 21 mg transdermal nicotine, placebo patch
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 80 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2005
U.S. locations
2
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 14, 2026, 7:54 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Early Withdrawal Exposure and Negative Affect Withdrawal (NAW) Regulation Training for Smoking Cessation

NCT03912194
View directory record Official record
Conditions
Tobacco Dependence
Interventions
cognitive-behavioral withdrawal regulation strategies, relaxation strategies, early withdrawal exposure
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Exercise on Acute Nicotine Withdrawal

NCT01047930
View directory record Official record
Conditions
Nicotine Dependence, Smoking, Sleep Disorders, Intrinsic
Interventions
Exercise
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 45 Years
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 1, 2014 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Does Abstinence From E-cigarettes Produce Withdrawal Symptoms?

NCT02825459
View directory record Official record
Conditions
Substance Withdrawal Syndrome
Interventions
Abstinence from e-cigarettes
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
147 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Nov 19, 2018 · Synced Sep 14, 2026, 7:54 AM EDT
Recruiting Not applicable Interventional

Neural Correlates and Behavioral Impact of Withdrawal-induced Hyperalgesia Among People Who Smoke With and Without Chronic Pain

NCT06983678
View directory record Official record
Conditions
Tobacco Use, Chronic Pain
Interventions
Smoking as usual fMRI session, Abstinent fMRI session
Behavioral
Lead sponsor
Duke University
Other
Eligibility
21 Years to 65 Years
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 19, 2025 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effectiveness of the Nicotine Patch in Suppressing Nicotine Withdrawal Symptoms in Women Versus Men - 1

NCT00218140
View directory record Official record
Conditions
Smoking Cessation, Tobacco Use Disorder
Interventions
nicotine transdermal system
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 55 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2005
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Examining the Effect of the Nicotine Patch in Male and Female Smokers - 3

NCT00390559
View directory record Official record
Conditions
Drug Addiction, Smoking Cessation
Interventions
Nicotine transdermal system, Nicotine containing cigarette, Placebo cigarette
Drug · Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 50 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 17, 2012 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Project 2, Study 2: Extended Exposure to Low Nicotine Content Cigarettes in Opioid Abusers

NCT02250664
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Very low nicotine content cigarettes
Other
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 70 Years
Enrollment
775 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Nov 30, 2022 · Synced Sep 14, 2026, 7:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Examining the Effectiveness of the Nicotine Patch in Male and Female Smokers - 2

NCT00135746
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
nicotine transdermal system
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 50 Years
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 14, 2026, 7:54 AM EDT