Independent directory Public ClinicalTrials.gov records United States
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 26, 2026, 12:37 PM EDT

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

Showing 145–168 of 687 matching trials from the live ClinicalTrials.gov search.
Recruiting Not applicable Interventional Accepts healthy volunteers

Menthol, Inflammation, and Nicotine Transition Study

NCT06232447
Conditions
Cigarette Smoking, Inflammatory Response
Interventions
Cigarette Type Switching
Other
Lead sponsor
Rosalind Franklin University of Medicine and Science
Other
Eligibility
21 Years to 85 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
North Chicago, Illinois
Completed Not applicable Interventional Accepts healthy volunteers

Smartphone Application for Smoking Cessation

NCT02134509
Conditions
Smoking
Interventions
Experimental App, Active Comparator App
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
511 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
New Haven, Connecticut
Completed Not applicable Interventional Results available

Quit or Switch: E-cigarette Study

NCT05525078
Conditions
Tobacco Use
Interventions
e-cigarette, Nicotine patch, Nicotine lozenge
Behavioral · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Charleston, South Carolina
Conditions
Cigarette Smoking, Tobacco Use, Cigarette Smoking Behavior
Interventions
HRP Sampling period, NPL Sampling period
Other
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
21 Years and older
Enrollment
472 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Smoking
Interventions
Computer-delivered brief intervention (5As), Contingency Management
Behavioral
Lead sponsor
Wayne State University
Other
Eligibility
18 Years and older · Female only
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Detroit, Michigan
Conditions
Schizophrenia, Cognition, Cigarette Smoking
Interventions
tDCS
Device
Lead sponsor
Nathan Kline Institute for Psychiatric Research
Other
Eligibility
18 Years to 60 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Orangeburg, New York
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects Among Smokers Who Use and Do Not Use E-Cigarettes

NCT03511001
Conditions
Toxicant Exposure
Interventions
E-Cigarette Vs. Smoking as Usual
Other
Lead sponsor
California State University, San Marcos
Other
Eligibility
21 Years and older
Enrollment
187 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
2
States / cities
San Marcos, California • Kansas City, Missouri
Completed Not applicable Interventional Accepts healthy volunteers Results available

Varenicline-Aided Cigarette Reduction in Smokers Not Ready to Quit

NCT01308736
Conditions
Tobacco Use Disorder
Interventions
Varenicline, Placebo pill
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 64 Years
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
New Brunswick, New Jersey
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Semaglutide for Alcohol Use Disorder

NCT05520775
Conditions
Alcohol Use Disorder, Cigarette Smoking
Interventions
Semaglutide, Sham/placebo
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
21 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Completed Not applicable Interventional Accepts healthy volunteers Results available

Electronic Cigarette Use in Young Adult Men and Women

NCT03089541
Conditions
Cigarette Smoking, Tobacco Use
Interventions
Survey Arm
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 29 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
New Haven, Connecticut
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Impact of E-cigarette Use on the Body

NCT04972513
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Biospecimen Collection, Nitric Oxide Breath Test, Oscillometry, Spirometry, Survey Administration, Endothelial function
Procedure · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
15 Years to 25 Years
Enrollment
182 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Conditions
Cigarette Smoking
Interventions
Quit Smoking Now (QSN), Prize-based Contingency Management (CM)
Other · Behavioral
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Miami, Florida
Completed Not applicable Interventional Accepts healthy volunteers Results available

A High School Program for Preventing Prescription Drug Misuse

NCT03219190
Conditions
Prescription Drug Abuse, Substance Abuse, Substance Use (Drugs, Alcohol)
Interventions
LST High School Hybrid
Behavioral
Lead sponsor
National Health Promotion Associates, Inc.
Industry
Eligibility
14 Years to 18 Years
Enrollment
1,804 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
White Plains, New York
Conditions
Smoking, Cigarette
Interventions
LNC Cigarettes + Colored Packaging, Own Brand
Other
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
21 Years to 65 Years
Enrollment
219 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Nicotine Dependence
Interventions
Not listed
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 60 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2016
U.S. locations
1
States / cities
Charleston, South Carolina
Completed Not applicable Interventional Accepts healthy volunteers

Cooling Agent Pilot Among Adult Menthol Smokers

NCT06477601
Conditions
Tobacco Dependence
Interventions
Assigning cooling agent type cigarettes, Assigning traditional tobacco type cigarettes, Assigning menthol type cigarettes
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Kansas City, Missouri
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Perceptions of E-Cigarettes and Synthetic Cooling Agents, The ICE Study

NCT06208202
Conditions
Abuse Tobacco, Exposure
Interventions
Behavioral Intervention, Biospecimen Collection, Survey Administration
Behavioral · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 29 Years
Enrollment
158 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Cigar Flavor in Dual Users

NCT04487470
Conditions
Tobacco Use Disorder
Interventions
Flavored filtered cigars, Unflavored filtered cigars
Other
Lead sponsor
UConn Health
Other
Eligibility
21 Years to 34 Years
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Farmington, Connecticut
Conditions
Tobacco Use Disorder
Interventions
Memantine, bupropion, placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
New York, New York
Completed Not applicable Interventional Results available

iQuit Mindfully: Text Messaging for Smoking Cessation

NCT03029819
Conditions
Cigarette Smoking
Interventions
Mindfulness-based Addiction Treatment, iQuit Mindfully, Self-Help guide, Nicotine Patch
Behavioral · Drug
Lead sponsor
Georgia State University
Other
Eligibility
18 Years to 65 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Atlanta, Georgia
Recruiting Not applicable Interventional Accepts healthy volunteers

Communicating About Nicotine Reduction in Cigarettes

NCT06787937
Conditions
Tobacco Products, Smoking Behavior, Cigarette Use
Interventions
VLNC messages, Control message
Behavioral
Lead sponsor
Georgia State University
Other
Eligibility
21 Years and older
Enrollment
1,230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
2
States / cities
Atlanta, Georgia
Conditions
Smoking (Tobacco) Addiction, Smoking ( Cigarette), Tobacco, Tobacco Abstinence, Quitting Smoking, Smoking Cessation
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Denver, Colorado
Conditions
Cigarette Smoking
Interventions
Reat ETM, Hypothetical ETM
Drug
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
21 Years and older
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Roanoke, Virginia
Conditions
Smoking
Interventions
THS 2.2 Menthol (mTHS 2.2), Menthol Conventional Cigarette (mCC), Smoking Abstinence (SA)
Other
Lead sponsor
Philip Morris Products S.A.
Industry
Eligibility
22 Years and older
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
2
States / cities
Daytona Beach, Florida • Dallas, Texas