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ClinicalTrials.gov public records Last synced Oct 19, 2026, 2:13 AM EDT

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Showing 1–24 of 88 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Combustible cigarette 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 19, 2026, 2:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Comparative Abuse Liability Among African American and White Smokers

NCT04646668
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
E-cigarette and Heat not burn
Combination Product
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 28, 2023 · Synced Oct 19, 2026, 2:13 AM EDT
Not listed Not applicable Interventional

The Effect of Electronic Cigarette Use on Smoking Behaviors Among Smokers Receiving Outpatient Psychiatric Treatment

NCT04014322
View directory record Official record
Conditions
Tobacco Smoking, Psychiatric Disorders
Interventions
E-cigarette
Other
Lead sponsor
Fordham University
Other
Eligibility
21 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 18, 2023 · Synced Oct 19, 2026, 2:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assess Biomarkers of Tobacco Exposure and Nicotine Pharmacokinetics in Smokers After a 5-Day In-Clinic Confinement Switch to an Electronic Cigarette or Nicotine Gum

NCT02323438
View directory record Official record
Conditions
Smoking
Interventions
Usual Brand Cigarette, Electronic Cigarette #1, Electronic Cigarette #2, Leading U.S. Nicotine Gum
Other
Lead sponsor
R.J. Reynolds Vapor Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
153 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 1, 2018 · Synced Oct 19, 2026, 2:13 AM EDT
Not listed No phase listed Observational

Comparative Tobacco Interventions for Individuals With Severe and Persisting Behavioral Health Disorders

NCT04523948
View directory record Official record
Conditions
Tobacco Use
Interventions
Behavioral and pharmacological support to reduce combustible tobacco use.
Behavioral
Lead sponsor
Rose Research Center, LLC
Industry
Eligibility
21 Years and older
Enrollment
100 participants
Timeline
2020 – 2023
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 28, 2021 · Synced Oct 19, 2026, 2:13 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Study to Determine the Effects of ENDS Flavor Availability on Abstinence Within Smokers

NCT07598136
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
P2613422, P2611222, P2615522, P2615122, P2615422
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 65 Years
Enrollment
1,280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
7
States / cities
Maitland, Florida • Atlanta, Georgia • St Louis, Missouri + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 19, 2026, 2:13 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Nicotine Pouch Pharmacokinetics Abuse Liability

NCT07476144
View directory record Official record
Conditions
Smoking Behaviors
Interventions
Participants will place the pouch between their top lip and their gum for 30 minutes as per use instructions.
Drug
Lead sponsor
JT International SA
Industry
Eligibility
22 Years to 65 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
2
States / cities
Knoxville, Tennessee • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 19, 2026, 2:13 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Evaluation of Low and High Nicotine Tobacco Free Nicotine Pouches

NCT06678789
View directory record Official record
Conditions
Cigarette Smoking, Nicotine Dependence, Smoking Cessation
Interventions
High Nicotine Dose, Low Nicotine Dose
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 19, 2026, 2:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exploratory Study of Switching From Combustible Cigarettes to the BIDI E-cigarette

NCT05855343
View directory record Official record
Conditions
Smoking Cessation
Interventions
BIDI Stick e-cigarette
Other
Lead sponsor
Rose Research Center, LLC
Industry
Eligibility
22 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Oct 19, 2026, 2:13 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Abuse Liability for Five Modern Oral Nicotine Products

NCT07132814
View directory record Official record
Conditions
Smoking, Smoking Behaviors, Tobacco Use, Tobacco Smoking
Interventions
Product A, Product B, Product C, Product D, Product E, Product F, Product N
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 30, 2025 · Synced Oct 19, 2026, 2:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of e-Cigarettes on Perceptions and Behavior

NCT03742817
View directory record Official record
Conditions
Electronic Cigarettes
Interventions
e-Cigarette
Other
Lead sponsor
University of Southern California
Other
Eligibility
21 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 11, 2023 · Synced Oct 19, 2026, 2:13 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Role of Flavor in the Substitutability of E-cigarettes for Combustible Cigarettes Among Persistent Smokers

NCT06264154
View directory record Official record
Conditions
Smoking, Tobacco Use, Cigarette Smoking, E-Cig Use
Interventions
E-cigarettes
Other
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
21 Years and older
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Oct 19, 2026, 2:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Modern Nicotine Oral Product Abuse Liability

NCT06777784
View directory record Official record
Conditions
Smoking, Tobacco Use
Interventions
Product A, Product B, Product C, Product D, Product E, Product F, Product G, Product N
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
2
States / cities
Lexington, Kentucky • Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 23, 2025 · Synced Oct 19, 2026, 2:13 AM EDT
Completed Phase 2 Interventional

Pulmonary and Cardiac Effects of E-Cigarette Use in Pulmonary Patients Who Smoke Cigarettes

NCT05610514
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Chronic Bronchitis, Emphysema, Asthma-COPD Overlap Syndrome
Interventions
E-Cigarette, Financial Incentives
Other · Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
40 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Oct 19, 2026, 2:13 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Social Media Influences on Engagement and Susceptibility to Non-combustible Tobacco Product Use Among Youth and Young Adults (AYA)

NCT07721883
View directory record Official record
Conditions
Perceptions of Tobacco Products
Interventions
Each intervention will be a picture of a social media post. The posts will vary (in a 3X2 factorial design) the type of flavor described and whether concealability is described.
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
14 Years to 17 Years
Enrollment
4,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Oct 19, 2026, 2:13 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Effects of E-cigarette Use on Health

NCT06610838
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Health Assessments
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 24, 2025 · Synced Oct 19, 2026, 2:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Development of a Videogame Prototype Targeting Cigarette and Marijuana Smoking, and Tobacco Product Prevention Among Young Adolescents (smokeScreen)

NCT03722888
View directory record Official record
Conditions
Smoking
Interventions
smokeSCREEN video game
Device
Lead sponsor
Yale University
Other
Eligibility
11 Years to 14 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
3
States / cities
Hamden, Connecticut • New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 29, 2018 · Synced Oct 19, 2026, 2:13 AM EDT
Recruiting Not applicable Interventional

Electronic Cigarettes as a Harm Reduction Strategy Among People With Opioid Use Disorder on Buprenorphine

NCT07202039
View directory record Official record
Conditions
Tobacco-flavored EC, Sweet-Cooling EC, Sweet Non-cooling EC
Interventions
Brief individual counseling sessions
Behavioral
Lead sponsor
Prisma Health-Upstate
Other
Eligibility
21 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Oct 19, 2026, 2:13 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Noncombustible Nicotine Delivery Systems as Potential Harm Reduction Tools for Persistent Cigarette Smokers

NCT06372899
View directory record Official record
Conditions
E-cigarette Use, Cigarette Smoking, Harm Reduction, Tobacco Use
Interventions
E-cigarettes, Oral nicotine pouches
Other
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
21 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Oct 19, 2026, 2:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD201201: Study to Assess Elements of Abuse Liability for Electronic Nicotine Delivery System P12

NCT05210699
View directory record Official record
Conditions
Smoking, Smoking Behaviors, Tobacco Use, Tobacco Smoking
Interventions
Product A, Product B, Product C, Product D, Product E, Product N
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
2
States / cities
Springfield, Missouri • Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 29, 2022 · Synced Oct 19, 2026, 2:13 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

A RCT to Determine the Effect of ENDS Flavor Availability on Abstinence Within Smokers

NCT07172438
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
P2611222, P2615022, P2615122, P2613422
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 65 Years
Enrollment
668 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
27
States / cities
Chandler, Arizona • Fort Smith, Arkansas • Altamonte Springs, Florida + 21 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 19, 2026, 2:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluating Selected Constituents in the Exhaled Breath Samples

NCT04143256
View directory record Official record
Conditions
Electronic Cigarette Use, Cigarette Use, Electronic, Tobacco Use, Tobacco Smoking
Interventions
JUUL ENDS 5% Virginia Tobacco, JUUL 3% Virginia Tobacco ENDS, JUUL 5% Mint ENDS, JUUL 3% Mint ENDS, JUUL 5% Menthol ENDS, JUUL 3% Menthol ENDS, JUUL 5% Mango ENDS, JUUL 3% Mango ENDS, US Cigarette, Non-menthol - Marlboro Gold King Size, US Cigarette, Menthol - Newport King Size
Other
Lead sponsor
Juul Labs, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
135 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
3
States / cities
Secaucus, New Jersey • Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 11, 2020 · Synced Oct 19, 2026, 2:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Trial for Harm Reduction With Incentives & Vaping E-cigarettes

NCT06111053
View directory record Official record
Conditions
Obesity, Smoking Cessation
Interventions
ENDS, CI, No ENDS, NI
Other
Lead sponsor
Brown University
Other
Eligibility
21 Years to 99 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Nov 18, 2024 · Synced Oct 19, 2026, 2:13 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Heat-not-burn Tobacco Product to Aid in Switching From Combustible to Noncombustible Nicotine (IQOS)

NCT04861428
View directory record Official record
Conditions
Smoking Behaviors
Interventions
IQOS, Smoking as Usual
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
21 Years to 77 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 4, 2024 · Synced Oct 19, 2026, 2:13 AM EDT