Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 17, 2026, 3:56 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 81 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Varenicline 0.5 MG Clear all
Recruiting Phase 3 Interventional Accepts healthy volunteers

Switching to E-cigarettes in Smokers Not Interested in Quitting

NCT05703672
View directory record Official record
Conditions
Smoking Reduction
Interventions
Varenicline Tartrate, Placebo, Electronic cigarette
Drug · Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
2
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 2 Interventional Results available

Crossover Target Engagement Study of Cholinergic Mechanisms of Gait Dysfunction in Parkinson's Disease (Project #3 - Experiment 3 [UdallP3E3])

NCT04403399
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Varenicline, Placebo
Drug
Lead sponsor
University of Michigan
Other
Eligibility
45 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 27, 2021 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 4 Interventional Results available

A Comparative Effectiveness & Long Term Health Study in Wisconsin Smokers

NCT01553084
View directory record Official record
Conditions
Smoking Cessation, Smoking, Nicotine Dependence
Interventions
Varenicline, Nicotine lozenge, Nicotine Patch
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
1,086 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 2, 2020 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Efficacy and Tolerability of Combination Varenicline With Hydroxyzine as a Potential Smoking Cessation Treatment

NCT04188106
View directory record Official record
Conditions
Smoking Cessation, Stress, Sleep Disturbance, Nausea
Interventions
Varenicline Pill, Hydroxyzine Pill
Drug
Lead sponsor
Rose Research Center, LLC
Industry
Eligibility
19 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 3, 2023 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of Varenicline Safety, Tolerability, Pharmacokinetics and Pro-Cognitive Effects in Healthy Elderly Non-Smoking Subjects

NCT00694044
View directory record Official record
Conditions
Healthy, Non-Smoking
Interventions
varenicline, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
65 Years to 85 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
2
States / cities
Miami, Florida • Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Jun 2, 2009 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Not applicable Interventional Results available

Improving Medication Compliance and Smoking Cessation Treatment Outcomes for African American Smokers

NCT00781599
View directory record Official record
Conditions
Smokers
Interventions
Chantix, Adherence Counseling, Standard Counseling
Drug · Behavioral
Lead sponsor
Nikki Nollen, PhD, MA
Other
Eligibility
18 Years to 75 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 11, 2012 · Synced Oct 17, 2026, 3:56 AM EDT
Recruiting Phase 4 Interventional

The Avenues Study: Dual Use Cessation

NCT06474299
View directory record Official record
Conditions
Smoking Cessation, Electronic Cigarette Use
Interventions
Varenicline, Nicotine patch, Dual Focused Cessation Counseling, Smoking Focused Cessation Counseling, Counseling Intensity: 1 Session, Counseling Intensity: 4 Sessions
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 17, 2026, 3:56 AM EDT
Terminated Phase 3 Interventional Results available

Varenicline and Alcohol in Inpatient Addictions Program (IAP)

NCT01169610
View directory record Official record
Conditions
Alcoholism, Nicotine Dependence
Interventions
Varenicline
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 20, 2019 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 2 Interventional Results available

Combination Bupropion / Varenicline for Smoking Cessation in Male Smokers

NCT01806779
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Chantix, Zyban, Nicotine patches
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
376 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
4
States / cities
Charlotte, North Carolina • Durham, North Carolina • Raleigh, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2016 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Varenicline For Smokers In Recovery From Alcohol Dependence

NCT01092702
View directory record Official record
Conditions
Tobacco Abstinence
Interventions
Varenicline
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 25, 2023 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 1 Interventional

A Study of Varenicline in the Treatment of Visceral Sensation

NCT06854406
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Varenicline
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Oct 17, 2026, 3:56 AM EDT
Terminated Phase 4 Interventional Results available

Varenicline For Nicotine Vaping Cessation In Non Smoker Vaper Adolescents

NCT04602494
View directory record Official record
Conditions
Vaping, Nicotine Dependence
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 25 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 4, 2024 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A Trial of Directly Observed and Long-term Varenicline

NCT03365362
View directory record Official record
Conditions
Tobacco Use Disorder, Opioid-use Disorder
Interventions
Long-Term Varenicline, Short-Term Varenicline, Directly Observed Therapy, Self Administered Therapy
Drug · Behavioral
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
18 Years and older
Enrollment
243 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 30, 2024 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 4 Interventional Results available

Smoking Cessation Treatment for Methadone Maintenance Patients

NCT01027754
View directory record Official record
Conditions
Smoking Cessation, Substance-Related Disorders
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
18 Years and older
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 26, 2021 · Synced Oct 17, 2026, 3:56 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Reward Sensitivity and Pharmacotherapy for Smoking Cessation

NCT02162849
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Varenicline, Nicotine Patch, Placebo Patch, Placebo Tablet, Questionnaires, Counseling Sessions, Lab Session, Saliva Test
Drug · Behavioral · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years to 75 Years
Enrollment
204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Tobacco Cessation at FDNY

NCT05997225
View directory record Official record
Conditions
Tobacco Use, Tobacco Smoking, Tobacco Use Cessation
Interventions
opt out enrollment, tailored counseling, varenicline started prior to target quit date, opt in enrollment, non-tailored counseling, varenicline started prior to target quit date
Other
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
40 Years and older
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Jan 29, 2026 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Smoking Cessation & Opioid Dependence Treatment Integration

NCT02854800
View directory record Official record
Conditions
Smoking Cessation, Opioid Related Disorders
Interventions
varenicline
Drug
Lead sponsor
West Virginia University
Other
Eligibility
18 Years and older
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Aug 14, 2020 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Not applicable Interventional Results available

A Pilot Clinical Trial of Varenicline as a Treatment for Alcohol Dependence

NCT01011907
View directory record Official record
Conditions
Substance Dependence
Interventions
varenicline, placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 75 Years
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Emeryville, California
Source: ClinicalTrials.gov public record
Updated Feb 25, 2013 · Synced Oct 17, 2026, 3:56 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Pharmaceutically-Enhanced Reinforcement for Reduced Alcohol and Smoking

NCT05181891
View directory record Official record
Conditions
Alcohol Use Disorder (AUD), Nicotine Use Disorder
Interventions
Contingency Management, Non-contingent control
Behavioral
Lead sponsor
Washington State University
Other
Eligibility
18 Years and older
Enrollment
205 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Spokane, Washington
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Translational Neuropsychopharmacology Research of Nicotine Addiction

NCT02723162
View directory record Official record
Conditions
Nicotine Dependence, Cigarettes
Interventions
Varenicline (VRN), N-Acetylcysteine (NAC), Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 55 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 18, 2022 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Not applicable Interventional Results available

Varenicline and Motivational Advice for Smokers With Substance Use Disorders

NCT00756275
View directory record Official record
Conditions
Smoking Cessation, Nicotine Dependence
Interventions
Nicotine Replacement Treatment (NRT), varenicline, Behavioral counseling for smoking cessation
Drug · Behavioral
Lead sponsor
Brown University
Other
Eligibility
18 Years to 75 Years
Enrollment
158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 27, 2018 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study Evaluating The Safety And Efficacy Of Varenicline and Bupropion For Smoking Cessation In Subjects With And Without A History Of Psychiatric Disorders

NCT01456936
View directory record Official record
Conditions
Smoking Cessation
Interventions
Placebo, varenicline tartrate, bupropion hydrochloride, Nicotine Replacement Therapy Patch
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
8,144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
77
States / cities
Mobile, Alabama • Phoenix, Arizona • Encino, California + 61 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2016 · Synced Oct 17, 2026, 3:56 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Endothelial Function and Autonomic Regulation After Short-term Smoking Cessation: Varenicline Versus Placebo

NCT00673595
View directory record Official record
Conditions
Smoking
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 16, 2012 · Synced Oct 17, 2026, 3:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Human Laboratory Study Of Varenicline in Smokers

NCT00709696
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Placebo, Varenicline
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 60 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 27, 2017 · Synced Oct 17, 2026, 3:56 AM EDT