Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Jun 26, 2026, 5:51 PM EDT

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Showing 1–9 of 9 matching trials from the live ClinicalTrials.gov search.
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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
Completed Phase 1 Interventional Accepts healthy volunteers

Determining Levels of [D10] Phenanthrene Tetraol in Smokers' Urine

NCT01092650
Conditions
Tobacco Toxicant Exposure
Interventions
Deuterated phenanthrene
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Minneapolis, Minnesota
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
Terminated Phase 1 Interventional Accepts healthy volunteers

Metabolism of Deuterated NNN in Smokeless Tobacco Users

NCT02414477
Conditions
Tobacco Toxicant Exposure
Interventions
Deuterated NNN
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years to 70 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Minneapolis, Minnesota
Completed No phase listed Observational Accepts healthy volunteers Results available

Novel Determinants and Measures of Smokeless Tobacco Use: Study 1

NCT01067586
Conditions
Smokeless Tobacco Use, Tobacco Dependence
Interventions
Not listed
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
359 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
3
States / cities
Minneapolis, Minnesota • Eugene, Oregon • Morgantown, West Virginia
Conditions
Cigarette Smoking, E-Cigarette Use, Smoking Cessation
Interventions
Varenicline, Counseling, Guided Self-Change Booklets
Drug · Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Menthol on ENDS Users' Addiction and Exposure

NCT05338801
Conditions
Electronic Cigarette Use
Interventions
Menthol-flavored e-cigarette, Tobacco-flavored e-cigarette
Other
Lead sponsor
Florida International University
Other
Eligibility
21 Years to 35 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Miami, Florida
Recruiting Not applicable Interventional

Cigarette Filter Study

NCT07348679
Conditions
Smoking ( Cigarette)
Interventions
Charcoal filtered cigarettes with marketing, Charcoal filtered cigarette without marketing, Non-charcoal filtered cigarettes
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
21 Years and older
Enrollment
252 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
New Brunswick, New Jersey
Completed Not applicable Interventional Accepts healthy volunteers Results available

Hookah Additive Research to Inform Product Standards

NCT05453773
Conditions
Tobacco-Related Carcinoma
Interventions
Questionnaire Administration, Tobacco Smoking
Other · Behavioral
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 50 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Columbus, Ohio