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Showing 1–24 of 189 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Nicotine Lozenge Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Quit Smoking Study for People Who Use E-Cigarettes

NCT04946825
View directory record Official record
Conditions
Nicotine Addiction, E-Cig Use, Quitting Smoking
Interventions
Nicotine replacement therapy patch, Nicotine replacement therapy lozenge, Quit electronic cigarettes, Continue electronic cigarettes
Drug · Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 29 Years
Enrollment
396 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated May 21, 2025 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Contingency Management for Smoking Cessation in Homeless Smokers

NCT01789710
View directory record Official record
Conditions
Smoking, Homeless Persons
Interventions
Bupropion, Nicotine replacement therapy, Contingency Management
Drug · Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mobile Contingency Management for Smoking Cessation

NCT04881630
View directory record Official record
Conditions
Smoking Cessation
Interventions
Automated Mobile Contingency Management (CM), Standard Care (SC)
Behavioral · Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older
Enrollment
532 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Sep 2, 2026, 4:28 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Testing an MBI for Smoking Cessation and Alcohol Use Among Cancer Survivors

NCT07447635
View directory record Official record
Conditions
Smoking Cessation, Alcohol Use
Interventions
Mindfulness-Based Relapse Prevention for Smoking and Alcohol (MBRP-SA), Quitline Support
Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 2 Interventional Results available

Free Samples for Health

NCT05627596
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Ask-Advise-Refer, Nicotine Patch, 14 Mg/24 Hr Transdermal Film, Extended Release, Nicotine lozenge
Behavioral · Drug
Lead sponsor
Sandra Japuntich
Other
Eligibility
18 Years and older
Enrollment
1,239 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 4 Interventional Results available

Evaluation of National Cancer Institute (NCI) Smoking Intervention Resources

NCT01342523
View directory record Official record
Conditions
Smoking Cessation, Smoking, Nicotine Dependence
Interventions
CIS - telephone cessation quitline counseling, Lozenge - nicotine mini-lozenges, Emails - Brief smoking prevention messages, Full website - standard smokefree.gov website content, Lite website - lite version of smokefree.gov, Full mailed booklet - NCI's detailed 36-page quit guide, brief mailed booklet - smaller version of NCI's booklet
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1,034 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 13, 2015 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 4 Interventional Results available

Smoking Cessation Medications: Efficacy, Mechanisms and Algorithms

NCT00332644
View directory record Official record
Conditions
Nicotine Dependence
Interventions
nicotine patch, nicotine lozenge, nicotine patch + nicotine lozenge, bupropion, bupropion + lozenge, placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1,504 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 29, 2011 · Synced Sep 2, 2026, 4:28 PM EDT
Recruiting Not applicable Interventional

E-cigarettes for Harm Reduction Among Smokers With Serious Mental Illness

NCT05815199
View directory record Official record
Conditions
Cigarette Smoking
Interventions
E-cigarette (EC), Nicotine Replacement Therapy (NRT), Harm-Reduction Counseling, Ecological Momentary Intervention (EMI) Text Messaging
Other · Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 9, 2025 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 2 Interventional Results available

Consultation, Advice, and Tailored Support (CATS) for Cancer Survivors

NCT03316170
View directory record Official record
Conditions
Smoking Cessation, Social Stress
Interventions
Social Support, NRT Sampling
Behavioral · Drug
Lead sponsor
Jessica Burris
Other
Eligibility
18 Years to 75 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 7, 2021 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Smoking Cessation in Women With Gynecological Conditions

NCT01989923
View directory record Official record
Conditions
Cervical Dysplasia
Interventions
Nicotine Replacement Therapy, Electronic Cigarettes
Other · Device
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Comparing NicoBloc to Nicotine Lozenges

NCT03720899
View directory record Official record
Conditions
Smoking Cessation, Nicotine Dependence
Interventions
NicoBloc, Nicotine Lozenge
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 7, 2025 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Comparisons of Nicotine-free Cigarettes, Extra Low Nicotine Cigarettes vs. Medicinal Nicotine

NCT00777569
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Nicotine free cigarettes, Extra-low nicotine cigarettes, Nicotine Lozenge
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 70 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 15, 2017 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Smokeless Tobacco Cessation Intervention for Firefighters

NCT05111041
View directory record Official record
Conditions
Smokeless Tobacco Cessation
Interventions
#EnufSnuff.TXT- First Responder, Enough Snuff Intervention
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Not applicable Interventional Results available

Improving Adherence to Web-Based Cessation Programs: A Social Network Approach

NCT01544153
View directory record Official record
Conditions
Smoking Cessation
Interventions
WEB, Social Network, Nicotine Replacement Therapy (NRT)
Behavioral
Lead sponsor
Truth Initiative
Other
Eligibility
18 Years and older
Enrollment
5,292 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Nov 12, 2017 · Synced Sep 2, 2026, 4:28 PM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Mobile App for Smoking Cessation and Mental Health

NCT04887558
View directory record Official record
Conditions
Smoking Cessation, Mental Illness
Interventions
Smart-T Mental Health+ and NRT, QuitGuide + NRT
Combination Product
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 100 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pilot Study to Evaluate the Safety and Efficacy of Ariva® Silver Wintergreen in Reducing Cigarette Craving in Smokers

NCT01337830
View directory record Official record
Conditions
Tobacco Use Disorder, Smoking
Interventions
Ariva® Silver Wintergreen, Silver Wintergreen
Other
Lead sponsor
Star Scientific, Inc
Industry
Eligibility
23 Years to 72 Years
Enrollment
111 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Martinsburg, West Virginia
Source: ClinicalTrials.gov public record
Updated Oct 23, 2014 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Not applicable Interventional

C-FLASH (Cigarillo Flavor and Abuse Liability, Attention, and Substitution in youtH)

NCT04358705
View directory record Official record
Conditions
Smoking Behaviors
Interventions
Aim 1: Online survey, Eye Tracking Activity, Eye tracking survey, Online Experimental Marketplace (ETM), Aim 3 survey, Cognitive Interviews, Supplemental Aim 1 Interviews
Other · Behavioral
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
16 Years to 28 Years
Enrollment
658 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 5, 2024 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 4 Interventional Results available

Smoking Cessation Intervention: Effectiveness in Primary Care

NCT00296647
View directory record Official record
Conditions
Tobacco Dependence
Interventions
nicotine patch, nicotine lozenge, bupropion, patch + lozenge, bupropion + lozenge
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1,346 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 13, 2015 · Synced Sep 2, 2026, 4:28 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Comprehensive Evaluation of Tobacco-Flavored vs. Non-Tobacco Flavored E-cigarettes on Smoking Behavior

NCT06260683
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Nicotine Replacement, Questionnaire Administration, Vaping
Drug · Other · Device
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
1,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Nicotine on Brain Reward Pathways

NCT02346539
View directory record Official record
Conditions
Depressive Disorder
Interventions
Nicotine polacrilex
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 21, 2018 · Synced Sep 2, 2026, 4:28 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 5, 2026 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD190301: A Study to Assess Elements of Abuse Liability for Two Dissolvable Nicotine Lozenge Tobacco Products

NCT04167384
View directory record Official record
Conditions
Smoking, Tobacco Use, Tobacco Smoking
Interventions
Product A, Product B, Product C, Product D, Product E, Product F, Product G, Product H
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
High Point, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 11, 2020 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Phase 4 Interventional

The Long-Term Quitting (Smoking Cessation) Study

NCT02564315
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine Mini-Lozenge for 11 Months, Preparation Phase Behavioral Reduction Counseling, Preparation Phase Recycling Counseling, Preparation Phase Control Treatment, Cessation Phase Supportive Counseling, Cessation Phase Skill Training Counseling, Cessation Phase Brief Information, Cessation Phase Nicotine Patch + Nicotine Mini-Lozenge
Drug · Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1,154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 16, 2020 · Synced Sep 2, 2026, 4:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Acute and Chronic Nicotine Modulation of Reinforcement Learning

NCT01830842
View directory record Official record
Conditions
Nicotine Addiction
Interventions
Nicotine polacrilex, Placebo, satiety, abstinence
Drug · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 55 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 18, 2017 · Synced Sep 2, 2026, 4:28 PM EDT