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 are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 27, 2026, 4:52 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 38 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Varenicline 1mg BID 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 Dec 28, 2025 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 4 Interventional

Smoking Study With Behavioral Therapy for Hypertensive Patients

NCT00879177
View directory record Official record
Conditions
Cigarette Smoking, Hypertension
Interventions
Varenicline, behavioral therapy
Drug · Behavioral
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 9, 2017 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 3 Interventional Results available

Smoking Cessation in Subjects With Mild-to-moderate Chronic Obstructive Pulmonary Disease (COPD).

NCT00285012
View directory record Official record
Conditions
Smoking Cessation
Interventions
placebo, Varenicline Tartarate
Drug
Lead sponsor
Pfizer
Industry
Eligibility
35 Years and older
Enrollment
504 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
22
States / cities
Birmingham, Alabama • Los Angeles, California • Denver, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Apr 19, 2010 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 3 Interventional Results available

Evaluation of a Tailored Smoking Cessation Treatment Algorithm Based on Initial Treatment Response and Genotype

NCT00894166
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine Patches, Nicotine patches, then bupropion & nicotine patches (Pre-Quit), Nicotine patches, then varenicline (Pre-Quit), Nicotine patches, then nicotine patches (Pre-Quit), Nicotine patches, then bupropion & nicotine patches (Post-Quit), Nicotine patches, then varenicline (Post-Quit), Nicotine patches, then nicotine patches (Post-Quit)
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
606 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Charlotte, Durham, Raleigh, Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 22, 2013 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Smoking Cessation Intervention for Thoracic Patients

NCT00580398
View directory record Official record
Conditions
Lung Cancer
Interventions
Smoking cessation counseling, varenicline
Behavioral · Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
Not listed
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 11, 2018 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 4 Interventional Results available

Smoking Cessation Study In Healthy Adolescent Smokers

NCT01312909
View directory record Official record
Conditions
Smoking Cessation
Interventions
Varenicline 1mg BID, Varenicline 0.5mg BID, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
12 Years to 19 Years
Enrollment
312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
56
States / cities
Ozark, Alabama • Goodyear, Arizona • Little Rock, Arkansas + 46 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2018 · Synced Sep 27, 2026, 4:52 AM EDT
Withdrawn Phase 2 Interventional

Varenicline for the Treatment of Cannabis and Tobacco Use Disorders in Veterans

NCT05294263
View directory record Official record
Conditions
Tobacco Use Disorder, Cannabis Use Disorder
Interventions
Varenicline, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 26, 2024 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 2 Interventional

Tobacco Treatment Optimization and Preferences During Concurrent Cancer Treatment

NCT04634071
View directory record Official record
Conditions
Smoking Cessation, Cancer, Treatment-Related
Interventions
Varenicline, Bupropion, Long-acting nicotine replacement therapy, Low-intensity counseling, High-intensity counseling, No nicotine replacement therapy, Nicotine Replacement Products
Drug · Behavioral · Other
Lead sponsor
Joseph Valentino, MD
Other
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
3
States / cities
Bowling Green, Kentucky • Lexington, Kentucky • Owensboro, Kentucky
Source: ClinicalTrials.gov public record
Updated Feb 1, 2026 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 4 Interventional Results available

A Multi-National Study To Assess How Effective And Safe The Smoking Cessation Medicine Varenicline Is In Smokers Who Have Already Tried Varenicline In The Past As A Prescription Medicine From Their Usual Healthcare Provider

NCT01244061
View directory record Official record
Conditions
Smoking Cessation
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
498 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
8
States / cities
Los Angeles, California • DeLand, Florida • Lexington, Kentucky + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2014 · Synced Sep 27, 2026, 4:52 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 9, 2016 · Synced Sep 27, 2026, 4:52 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 17, 2022 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Smoking Environments on Craving and Smoking (CameraCue2.0)

NCT02551692
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Nicotine Patch, Varenicline, Placebo Nicotine Patch, Placebo Capsule
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 60 Years
Enrollment
125 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 17, 2020 · Synced Sep 27, 2026, 4:52 AM EDT
Recruiting Early Phase 1 Interventional

Advancing VR-based Attentional Bias as a Biomarker for Tobacco Use Disorder

NCT06582888
View directory record Official record
Conditions
Nicotine Addiction, Craving
Interventions
Varenicline Tartrate, Placebo
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
22 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 1 Interventional

Pilot Study of Varenicline to Treat Opioid Dependence

NCT01436474
View directory record Official record
Conditions
Chronic Pain, Opioid Dependence
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
21 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 22, 2013 · Synced Sep 27, 2026, 4:52 AM EDT
Recruiting Phase 4 Interventional

Varenicline for Smoking Reduction in Veterans Not Ready To Quit

NCT06966362
View directory record Official record
Conditions
Veterans, Tobacco Use Disorder, Cigarette Smoking, Tobacco Dependence
Interventions
Motivation-Phase Varenicline, Motivation-Phase Nicotine Mini-Lozenge, Cessation-Phase Combination Nicotine Replacement Therapy (NRT), Cessation-Phase Varenicline, Motivation-Phase Counseling, Cessation-Phase Counseling
Drug · Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
21 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
4
States / cities
San Diego, California • Minneapolis, Minnesota • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 1 Interventional Results available

New Approaches to Smoking Cessation in Heavy Drinkers

NCT02151591
View directory record Official record
Conditions
Nicotine Dependence, Cigarette Smoking, Alcohol Consumption, Heavy Drinking
Interventions
Varenicline
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 75 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 23, 2020 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 1Phase 2 Interventional Results available

STARS (Smoking Treatment And Remote Sampling) Study

NCT04525755
View directory record Official record
Conditions
Smoking, Smoking Cessation, Tobacco Smoking, Cigarette Smoking
Interventions
Varenicline 0.5 MG, Nicotine Replacement Therapy (NRT)
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
652 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Advancing Tobacco Use Treatment for African American Smokers

NCT02360631
View directory record Official record
Conditions
Smoking Cessation
Interventions
Chantix, Placebo
Drug
Lead sponsor
Lisa Sanderson Cox, PhD
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
2
States / cities
Kansas City, Kansas • Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 14, 2020 · Synced Sep 27, 2026, 4:52 AM EDT
Withdrawn Phase 2 Interventional

Smoking Cessation Trial in Recurrent Acute Pancreatitis and Chronic Pancreatitis

NCT07171112
View directory record Official record
Conditions
Pancreatitis, Chronic, Pancreatitis, Acute, Recurrent Acute Pancreatitis, Smoking (Tobacco) Addiction
Interventions
Standard Varenicline Dosing (1 mg BID), Bupropion 150 mg twice daily, Increased Varenicline Dosing (1mg TID)
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 27, 2026, 4:52 AM 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 1, 2024 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 2 Interventional Results available

The Effect of Varenicline (Chantix) and Bupropion (Zyban) on Smoking Lapse Behavior

NCT00580853
View directory record Official record
Conditions
Smoking Lapse Behavior
Interventions
varenicline, bupropion, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2016
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 7, 2018 · Synced Sep 27, 2026, 4:52 AM EDT
Recruiting Phase 2 Interventional

A Trial of Varenicline for E-cigarette Cessation

NCT07040566
View directory record Official record
Conditions
E-cigarette Use, Vaping, Nicotine Dependence
Interventions
Varenicline 1mg BID, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
326 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
2
States / cities
New Haven, Connecticut • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 4 Interventional Results available

Behavioral Activation and Varenicline for Smoking Cessation in Depressed Smokers

NCT02378714
View directory record Official record
Conditions
Nicotine Dependence, Major Depressive Disorder
Interventions
Varenicline, BASC, Standard treatment
Drug · Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
2
States / cities
Chicago, Illinois • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 28, 2021 · Synced Sep 27, 2026, 4:52 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Examination of Sleep, Smoking Cessation, and Cardiovascular Health

NCT02941718
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Sleep Advancement Counseling, General Health Information
Behavioral
Lead sponsor
University of Delaware
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Aug 29, 2019 · Synced Sep 27, 2026, 4:52 AM EDT