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ClinicalTrials.gov public records Last synced Oct 27, 2026, 6:56 PM EDT

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Showing 409–432 of 689 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Cigarette Use Clear all
Completed No phase listed Observational

A Comparison of Exhaled Carbon Monoxide Measurements Using the iCOquit Smokerlyzer and Vitalograph Breath CO Monitor vs Carboxyhemoglobin From Venous Samples While Validating a Mobile Research Application

NCT04826549
View directory record Official record
Conditions
Smoking, Cigarette
Interventions
Not listed
Lead sponsor
Rose Research Center, LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
30 participants
Timeline
2021
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 13, 2022 · Synced Oct 27, 2026, 6:56 PM EDT
Withdrawn Not applicable Interventional

Understanding Factors That Influence Electronic Cigarette Nicotine Delivery Through PET Imaging of Beta-2 Nicotinic Acetylcholine Receptors

NCT04258852
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Low strength nicotine e-liquid, High strength nicotine e-liquid
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 16, 2024 · Synced Oct 27, 2026, 6:56 PM EDT
Completed No phase listed Observational

Vape Use Among Younger & Older Smokers

NCT07214168
View directory record Official record
Conditions
Smoking Cigarette, Smoking Behaviors, Vaping, Vaping Behaviors
Interventions
Not listed
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
21 Years to 65 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional

The Impact of Innovative Tax Proposals on Purchase Patterns

NCT05370313
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Market Price Condition (control), Tobacco Parity Tax Condition, Nicotine-Content Tax Condition, Harm-Reduction Tax Condition, Modified Risk Tobacco Product (MRTP) Tax Condition
Behavioral
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
21 Years and older
Enrollment
285 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
2
States / cities
Buffalo, New York • Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 18, 2025 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Examining Brain Responses Linked to Emotion in Individuals Who Smoke Cigarettes

NCT04310735
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
Verbal smoking expectancy manipulation
Behavioral
Lead sponsor
Penn State University
Other
Eligibility
21 Years to 55 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 7, 2025 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Preventing Cigarette Use Among Urban Youth Via an M-Health Primary Care Preventive Intervention

NCT03855410
View directory record Official record
Conditions
Tobacco Use, Drug Use, Adolescent Behavior, Alcohol Use, Sexual Risk Behavior
Interventions
S4E, Attention-Matched Control Group
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
13 Years to 21 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
2
States / cities
Ann Arbor, Michigan • Ypsilanti, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 26, 2019 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Naltrexone and Varenicline: Weight Gain and Tolerability in Cigarette Smokers

NCT00502216
View directory record Official record
Conditions
Smoking, Nicotine Dependence
Interventions
Naltrexone, Varenicline
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 17, 2018 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional

Electronic Cigarettes as a Harm Reduction Strategy Among People Living With HIV/AIDS

NCT04218708
View directory record Official record
Conditions
Nicotine Addiction
Interventions
Nicotine patch and gum, Minnesota Nicotine Withdrawal Scale (MNWS), ASSIST (the Alcohol, Smoking and Substance Involvement Screening), Counseling, NIDA Standardized Research E-cigarettes (SREC)
Other · Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 20, 2024 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Perceptions of Cigarette Smoking in Young Adults

NCT03953508
View directory record Official record
Conditions
Smoking, Cigarette
Interventions
Cigarette flavor type
Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 26 Years
Enrollment
199 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 16, 2024 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of E-Liquid Flavor on Respiratory Symptoms in People Using Electronic Nicotine Delivery Systems

NCT05423340
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
E-cigarette Flavor, Tobacco Free Nicotine Pouch
Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years to 55 Years
Enrollment
163 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional

Effect of Cigarette Pack Warnings and Packaging Among Young Adult Smokers

NCT03446170
View directory record Official record
Conditions
Tobacco Use
Interventions
Graphic cigarette warning labels, plain packaging
Behavioral
Lead sponsor
Georgetown University
Other
Eligibility
18 Years to 30 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jan 4, 2022 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Phase 4 Interventional Results available

Neurobehavioral Substrates of Propranolol's Effects on Drug Cue Reactivity

NCT03309943
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Propranolol, Placebo
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 13, 2020 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

THC Crossover Study

NCT04429568
View directory record Official record
Conditions
THC, Cannabis, Cannabis Smoking, Cannabis Use, Unspecified, Cigarette Smoking, Tobacco Use, Nicotine Dependence, Nicotine Withdrawal, Cardiovascular Risk Factor
Interventions
Smoked Cannabis, Vaped Cannabis, Tobacco Cigarette
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2024 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Incentives for Oklahoma Tobacco Helpline Engagement in Persistent Poverty Counties

NCT05095779
View directory record Official record
Conditions
Cigarette Smoking, Nicotine Dependence
Interventions
Coaching calls, Nicotine replacement therapy, Financial Incentives
Behavioral · Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 30, 2024 · Synced Oct 27, 2026, 6:56 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Novel vs. Usual Brand Menthol Cigarettes on Abuse Liability

NCT07564648
View directory record Official record
Conditions
Cigarette Addiction, Tobacco Use Disorder
Interventions
Biospecimen Collection, Questionnaire Administration, Cigarette Purchase Task, Cross-Price Elasticity Task, Daily Diary Surveys, Progressive Ratio Task
Behavioral
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 27, 2026, 6:56 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

An Evaluation of the Tobacco Prevention Toolkit Healthy Futures: Alternative-to-Suspension Vaping Intervention

NCT06483412
View directory record Official record
Conditions
Tobacco Use Cessation, Addiction
Interventions
Healthy Futures: Alternative-to-Suspension Curriculum
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
14 Years to 18 Years
Enrollment
2,540 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Using Computers to Assist in Parental Smoking Cessation in a Pediatric Setting

NCT01334216
View directory record Official record
Conditions
Cigarette Smoking
Interventions
CHICA Smoking Cessation Module, CHICA Placebo
Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
362 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 13, 2017 · Synced Oct 27, 2026, 6:56 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 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cigarette and E-cigarette Nicotine Content in an Electronic Tobacco Marketplace (ETM)

NCT05320887
View directory record Official record
Conditions
Tobacco Use
Interventions
Normal Nicotine Content Vape with all flavor e-liquids, Normal nicotine content vape with tobacco e-liquids, Low nicotine content vape with all flavor e-liquids, Low nicotine content vape with tobacco e-liquids
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
21 Years and older
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 9, 2024 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Short Messaging Service Program to Help Quit Smoking During Perioperative Period.

NCT03839043
View directory record Official record
Conditions
Tobacco Use Cessation, Perioperative/Postoperative Complications, Tobacco Smoking
Interventions
Brief behavioral intervention, SMS Program
Behavioral · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 9, 2021 · Synced Oct 27, 2026, 6:56 PM EDT
Recruiting Phase 2 Interventional

GLP-1 Receptor Agonists to Decrease Ethanol and CVD Risk in HIV

NCT07221214
View directory record Official record
Conditions
HIV, Alcohol, Smoking Cigarette, Cardiovascular Disease Prevention
Interventions
Semaglutide (Rybelsus®), Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 89 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Examining the Effects of Neural Stimulation on Inhibitory Control and Cigarette Smoking

NCT03960138
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Intermittent Theta-burst stimulation (iTBS), Continuous Theta-burst stimulation (cTBS)
Device
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 65 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 10, 2023 · Synced Oct 27, 2026, 6:56 PM EDT
Completed Not applicable Interventional Results available

Quit or Switch: E-cigarette Study

NCT05525078
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 26, 2024 · Synced Oct 27, 2026, 6:56 PM EDT