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ClinicalTrials.gov public records Last synced Oct 6, 2026, 12:41 AM EDT

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Showing 25–48 of 124 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: flavor and nicotine Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cigarette Smoking Among Young Adults

NCT04340947
View directory record Official record
Conditions
Cigarette Smoking, Smoking Behaviors
Interventions
Very low nicotine cigarette: menthol, Very low nicotine cigarette: non-mentol
Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 34 Years
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 22, 2025 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Results available

Patch Study - Intervention for HIV Positive Smokers

NCT02982772
View directory record Official record
Conditions
Smoking Cessation, HIV
Interventions
Combination Therapy, Standard Care Intervention
Other
Lead sponsor
dr. maria miguez
Other
Eligibility
18 Years and older
Enrollment
488 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 6, 2021 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Low Nicotine Content Cigarettes in Vulnerable Populations: Affective Disorders

NCT04090879
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Either normal nicotine content cigarettes (15.8mg/g) or reduced nicotine content cigarettes (0.4mg/g), E-Cigarettes
Other
Lead sponsor
Brown University
Other
Eligibility
18 Years to 70 Years
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
2
States / cities
Providence, Rhode Island • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Apr 1, 2025 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Banning Menthol Flavorant on Cigarette and E-Cigarette Use

NCT03402243
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Menthol ban on cigarettes, Menthol ban on cigarettes and e-cigarettes, No menthol ban
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 64 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 10, 2021 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Social Media Influences on Perceptions of Alternative Nicotine and Nicotine-like Vaping Products Among Youth and Young Adults (AYA)

NCT07849790
View directory record Official record
Conditions
Vaping
Interventions
An image resembling a social media post
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
14 Years to 25 Years
Enrollment
2,829 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Impact of Flavors on Nicotine Perception and Self-Administration Via E-cigarettes

NCT04038515
View directory record Official record
Conditions
Nicotine, E-liquid Flavors
Interventions
Nicotine 0 mg/mL, Nicotine 6 mg/mL, Nicotine 12 mg/mL, Nicotine 24 mg/mL, 'Menthol' flavor, 'Menthol/Mint' flavor, 'Green Apple' flavor, 'Watermelon' flavor, 'Unflavored'
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 30 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 5, 2024 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Characterize the Nicotine Uptake and Subjective Effects With Use of JUUL Electronic Nicotine Delivery Systems

NCT04123041
View directory record Official record
Conditions
Electronic Cigarette Use, Tobacco Smoking
Interventions
JUUL ENDS, Combustible cigarette, comparator e-cigarette, Nicorette gum
Other
Lead sponsor
Juul Labs, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
137 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
2
States / cities
Kansas City, Kansas • Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Feb 13, 2020 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional

Nicotine Pharmacokinetics and Subjective Effects of Oral Nicotine Products Relative to Smokeless Tobacco in Adult Users

NCT06691386
View directory record Official record
Conditions
Tobacco Use
Interventions
Test Product A, Test Product B, Test Product C, Test Product D, Test Product E, Reference Product F: Subjects' OBMST
Other
Lead sponsor
Altria Client Services LLC
Industry
Eligibility
22 Years to 65 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
2
States / cities
Bentonville, Arkansas • Springfield, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 17, 2025 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Impact of Waterpipe Tobacco Flavors on Waterpipe Smoking Intentions, Perceptions, Patterns, and Toxicant Exposure

NCT03232827
View directory record Official record
Conditions
Smoking, Hookah, Waterpipe Smoking
Interventions
Flavored-Sweetened Waterpipe Tobacco, Unflavored-sweetened waterpipe tobacco, Unflavored-very low sweetened waterpipe tobacco, Flavored-very low sweetened waterpipe
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 50 Years
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jun 24, 2019 · Synced Oct 6, 2026, 12:41 AM EDT
Not yet recruiting Phase 4 Interventional

Evaluation of Dependence and Nicotine Replacement Therapy-Supported Cessation Efforts Among Regular Electronic Cigarette Use

NCT07786896
View directory record Official record
Conditions
E Cigarette Use, Cessation, Tobacco, Cessation, Nicotine
Interventions
Nicotine Replacement Therapies, Brief Behavioral Counseling
Drug · Behavioral
Lead sponsor
West Virginia University
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Greenville, North Carolina • Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Potential Effects of Electronic Nicotine Delivery System Flavor Regulations on African American Menthol Smokers

NCT05023096
View directory record Official record
Conditions
Electronic Nicotine Delivery System Flavors
Interventions
Tobacco product administration and assessment
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
21 Years and older
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Oct 6, 2026, 12:41 AM EDT
Recruiting Not applicable Interventional

Effects of Novel E-cigarette Constituents on Adults TCORS 3.0

NCT05932745
View directory record Official record
Conditions
Nicotine Use Disorder
Interventions
E-liquid coolant (No WS-3) for non-menthol (1), E-liquid coolant (No WS-3) for low (0.1%) menthol (1), E-liquid coolant (No WS-3) for high (2.0%) menthol (1), E-liquid coolant (Low [0.1%] WS-3) for non-menthol (2), E-liquid coolant (Low [0.1%] WS-3) for low (0.1%) menthol (2), E-liquid coolant (Low [0.1%] WS-3) for high (2.0%) menthol (2), E-liquid coolant (High [2.0%] WS-3) for non-menthol (3), E-liquid coolant (High [2.0%] WS-3) for low (0.1%) menthol (3), E-liquid coolant (High [2.0%] WS-3) for high (2.0%) menthol (3), E-liquid coolant (Low [0.1%] WS-23) for non-menthol (4), E-liquid coolant (Low [0.1%] WS-23) for low (0.1%) menthol (4), E-liquid coolant (Low [0.1%] WS-23) for high (2.0%) menthol (4), E-liquid coolant (High [2.0%] WS-23) for non-menthol (5), E-liquid coolant (High [2.0%] WS-23) for low (0.1%) menthol (5), E-liquid coolant (High [2.0%] WS-23) for high (2.0%) menthol (5), E-liquid coolant (4% WS-23) for non-menthol (6), E-liquid coolant (4% WS-23) for low (0.1%) menthol (6), E-liquid coolant (4% WS-23) for high (2.0%) menthol (6)
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Menthol as Delivered by an Electronic Cigarette on the Desirability of Nicotine in Tobacco Users

NCT02102100
View directory record Official record
Conditions
Nicotine Dependence
Interventions
nicotine, menthol
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 30 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
2
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 19, 2020 · Synced Oct 6, 2026, 12:41 AM EDT
Not listed Not applicable Interventional

Using ANDS to Reduce Harm for Low SES Cigarette Smokers

NCT05327439
View directory record Official record
Conditions
Smoking, Cigarette, Nicotine Dependence
Interventions
Nicotine (electronic cigarette), Nicotine (nicotine pouch)
Other
Lead sponsor
Brown University
Other
Eligibility
21 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jan 26, 2023 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional

Evaluation of Cessation Preferences of Menthol Smoker

NCT02020005
View directory record Official record
Conditions
Smoking Cessation
Interventions
Non-flavored 2mg nicotine gum, Non-flavored 4mg nicotine gum, Mint-flavored 2mg nicotine gum, Mint-flavored 4mg nicotine gum, Non-flavored nicotine inhaler, Mint-flavored nicotine ihaler
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 3, 2025 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pharmacokinetics, Subjective Effects, and Abuse Liability of Nicotine Salt-Based Vaping Products With Tobacco or Unflavored E-liquids, SALTVAPE Study

NCT04231539
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Nicotine, Vaporizer Device, Salt-HIgh Nicotine Unflavored (Product B), Free-Low Nicotine Tobacco Flavored (Product C), Salt-High Nicotine Tobacco Flavored (Product D)
Drug · Device
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 31, 2025 · Synced Oct 6, 2026, 12:41 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Effects of Tobacco Flavoring and Liquid Composition on Vaping Topography

NCT05876091
View directory record Official record
Conditions
Tobacco-Related Carcinoma
Interventions
Vaping, Biospecimen Collection, Questionnaire Administration
Other · Procedure
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Characterization of Product Use in Smokers Switching From Cigarettes to a RELX Electronic Nicotine Delivery System

NCT04708106
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
RELX ENDS Tobacco Flavor, RELX ENDS Menthol Flavor, RELX ENDS Tobacco and Menthol Flavors
Other
Lead sponsor
Cheerain HK Limited
Industry
Eligibility
22 Years to 65 Years
Enrollment
194 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
5
States / cities
Bentonville, Arkansas • Lexington, Kentucky • Springfield, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2021 · Synced Oct 6, 2026, 12:41 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 6, 2026, 12:41 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effect of Noni Juice on Lipid Peroxidation-derived DNA Adducts in Heavy Smokers

NCT01677169
View directory record Official record
Conditions
DNA Damage
Interventions
Noni juice, Placebo
Dietary Supplement
Lead sponsor
Tahitian Noni International, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
317 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2006
U.S. locations
1
States / cities
Rockford, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 11, 2019 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Study to Assess Tobacco-related Biomarkers of Exposure in Smokers Using myBlu E-cigarettes

NCT04019626
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Continue-smoking, myblu Tobacco 2.5%, myblu Tobacco 4.0%, myblu Honeymoon 2.5%, myblu Honeymoon 4.0%, JUUL 5%
Other
Lead sponsor
Fontem Ventures BV
Industry
Eligibility
21 Years to 65 Years
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 30, 2021 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Uptake, Measures of Abuse Liability, and Puffing Topography With Use of RELX ENDS Products by Smokers

NCT04640285
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
RELX ENDS Tobacco Flavor, RELX ENDS Menthol Flavor, Usual Brand Cigarette, Nicorette White Ice Mint nicotine polacrilex gum
Other
Lead sponsor
Cheerain HK Limited
Industry
Eligibility
22 Years to 59 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 24, 2021 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparison of Nicotine Plasma Concentrations and Subjective Effects for Three Electronic Cigarettes vs Combustible Cigarettes and Nicotine Gum

NCT02269514
View directory record Official record
Conditions
Smoking
Interventions
Own Brand Cigarette, Electronic Cigarette #1, Electronic Cigarette #2, Electronic Cigarette #3, Leading U.S. Nicotine Gum
Other
Lead sponsor
R.J. Reynolds Vapor Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 4, 2018 · Synced Oct 6, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessing the Effect of Flavor on ENDS Users' Experiences and Exposures

NCT04192032
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Preferred Juul pod flavor (5% nicotine), Classic Tobacco Juul pod flavor (5% nicotine), Preferred flavor with HWL, Preferred flavor, 3% nicotine, Preferred flavor, 0% nicotine
Other
Lead sponsor
Florida International University
Other
Eligibility
18 Years to 24 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Oct 6, 2026, 12:41 AM EDT