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Showing 1–18 of 18 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Without Substance Use Disorders Clear all
Completed Phase 1Phase 2 Interventional Results available

Zileuton With or Without Celecoxib As Chemopreventive Agents in Smokers

NCT01021215
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Zileuton, Celecoxib, laboratory biomarker analysis
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
2
States / cities
New York, New York • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 1, 2015 · Synced Jun 10, 2026, 5:09 PM EDT
Completed Phase 3 Interventional Results available

Quetiapine Extended Release (XR) in Bipolar Patients With Comorbid Generalized Anxiety Disorder (GAD)

NCT00671853
View directory record Official record
Conditions
Bipolar Disorder, Anxiety, Anxiety Disorders, Substance Use Disorders
Interventions
Quetiapine XR, Placebo for quetiapine XR
Drug
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 28, 2016 · Synced Jun 10, 2026, 5:09 PM EDT
Completed Phase 4 Interventional Results available

Health Education Counseling With or Without Bupropion in Helping African Americans Stop Smoking

NCT00666978
View directory record Official record
Conditions
Bladder Cancer, Cervical Cancer, Esophageal Cancer, Gastric Cancer, Head and Neck Cancer, Kidney Cancer, Leukemia, Liver Cancer, Lung Cancer, Pancreatic Cancer, Tobacco Use Disorder
Interventions
smoking cessation intervention, bupropion hydrochloride, gene expression analysis, polymerase chain reaction, counseling intervention, educational intervention, psychosocial assessment and care
Behavioral · Drug · Genetic + 2 more
Lead sponsor
Lisa Sanderson Cox, PhD
Other
Eligibility
18 Years and older
Enrollment
540 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
2
States / cities
Kansas City, Kansas • Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 12, 2017 · Synced Jun 10, 2026, 5:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cigarette Smoking in Smokers With and Without Schizophrenia

NCT04001114
View directory record Official record
Conditions
Tobacco Dependence, Schizophrenia
Interventions
Sampling Research Cigarettes
Combination Product
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 60 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 25, 2024 · Synced Jun 10, 2026, 5:09 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Theory-based Social Media Intervention for Non-medical Use of Prescription Opioids in Young Adults

NCT06469749
View directory record Official record
Conditions
Young Adults, Past-3-month Non-medical Use of Prescription Opioids, Without Substance Use Disorders, Social Media Users
Interventions
Theory-based and peer-led intervention on Instagram
Behavioral
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years to 25 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Jun 10, 2026, 5:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Smoking Cues on Tobacco Craving Responses and the Reinforcing Efficacy of Cigarettes in Smokers With and Without Schizophrenia

NCT00770237
View directory record Official record
Conditions
Schizophrenia, Nicotine Dependence
Interventions
Smoking Cues, Neutral Cues
Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 64 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 18, 2019 · Synced Jun 10, 2026, 5:09 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Transcranial Magnetic Stimulation (TMS) Effects Using Magnetoencephalography (MEG) Study

NCT06770556
View directory record Official record
Conditions
Alcohol Use Disorder, Alcohol Dependence, Alcohol Consumption
Interventions
Sham iTBS, Active iTBS, 10 Hz TMS, 1 Hz TMS
Device
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
21 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Jun 10, 2026, 5:09 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Predictors of Treatment Outcome for Smokers With and Without Schizophrenia

NCT00501007
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Not listed
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2013
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 16, 2017 · Synced Jun 10, 2026, 5:09 PM EDT
Recruiting Phase 2 Interventional

A Study of Brenipatide in Participants With Opioid Use Disorder

NCT07420283
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Brenipatide, Placebo, Buprenorphine
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 75 Years
Enrollment
465 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
38
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Fountain Valley, California + 30 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jun 10, 2026, 5:09 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Prazosin and Naltrexone (PaN) Study for Veterans With Alcohol Use Disorders

NCT02322047
View directory record Official record
Conditions
Alcohol Use Disorder, Posttraumatic Stress Disorder (PTSD)
Interventions
Prazosin, Naltrexone, Placebo (Prazosin), Placebo (Naltrexone)
Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years to 80 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 28, 2020 · Synced Jun 10, 2026, 5:09 PM EDT
Completed Phase 4 Interventional

Reducing Cannabis Overuse With Prazosin

NCT04721353
View directory record Official record
Conditions
Cannabis Dependence, Posttraumatic Stress Disorder, Cannabis Use Disorder
Interventions
Prazosin Hydrochloride
Drug
Lead sponsor
VA Puget Sound Health Care System
Federal
Eligibility
18 Years to 80 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 14, 2025 · Synced Jun 10, 2026, 5:09 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Self-activation in Individuals With and Without Nicotine Dependence

NCT03170258
View directory record Official record
Conditions
Addiction Nicotine
Interventions
Neurofeedback (from fMRI and/or EEG)
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years to 45 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 4, 2024 · Synced Jun 10, 2026, 5:09 PM EDT
Completed No phase listed Observational

Specialized Substance Abuse Supervision (SSAS) Versus Non-SSAS Recidivism Rates Among Nebraska Felony Drug Offenders

NCT00690352
View directory record Official record
Conditions
Substance-related Disorders, Alcohol-related Disorders
Interventions
Specialized Substance Abuse Supervision (SSAS)
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
17 Years and older
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 24, 2023 · Synced Jun 10, 2026, 5:09 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Safety and PK Study of BICX104 With or Without Bupropion Compared to Vivitrol

NCT07269873
View directory record Official record
Conditions
Healthy Adult Male and Female Volunteers
Interventions
BICX104 naltrexone implantable pellet, Bupropion 150 mg XL, Naltrexone (depot)
Drug
Lead sponsor
BioCorRx Pharmaceuticals Inc
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Jun 10, 2026, 5:09 PM EDT
Completed Not applicable Interventional Results available

Prazosin Augmentation of Outpatient Treatment of Alcohol Use Disorders in Active Duty Soldiers With and Without PTSD

NCT02226367
View directory record Official record
Conditions
Alcohol Use Disorders, Stress Disorders, Posttraumatic, Combat Disorders
Interventions
prazosin hydrochloride, placebo
Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
21 Years and older
Enrollment
158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Jun 10, 2026, 5:09 PM EDT
Recruiting Not applicable Interventional

Harm Reduction for Smokers With Mental Illness

NCT06543407
View directory record Official record
Conditions
Tobacco Dependence
Interventions
SWITCH IT, E-cig Provision Only
Behavioral · Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
21 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
2
States / cities
Louisville, Kentucky • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced Jun 10, 2026, 5:09 PM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Measuring the Effects of Neurostimulation on Risky and Ambiguous Decision-Making Capacity in People With and Without Substance Use Disorder

NCT06577454
View directory record Official record
Conditions
Opioid Use Disorder, Healthy Volunteers
Interventions
TMS (MagVenture MagPro 100 with MagOption)
Device
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 60 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Jun 10, 2026, 5:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Reducing Drug Use in Justice-Involved Emerging Adults

NCT05834881
View directory record Official record
Conditions
Substance-Related Disorders
Interventions
Contingency Management (CM) combined with vocational/educational coaching
Behavioral
Lead sponsor
Chestnut Health Systems
Other
Eligibility
18 Years to 30 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Jun 10, 2026, 5:09 PM EDT