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ClinicalTrials.gov public records Last synced Oct 4, 2026, 3:13 PM EDT

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Showing 25–48 of 112 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Oral tobacco Clear all
Completed Phase 2 Interventional Accepts healthy volunteers

Effectiveness of a Web-Assisted Quitline for Smokeless Tobacco Users

NCT00820495
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Web + Phone, Web Only, Phone Only, Usual Care
Behavioral
Lead sponsor
Oregon Research Institute
Other
Eligibility
18 Years and older
Enrollment
1,683 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
2
States / cities
San Diego, California • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 5, 2013 · Synced Oct 4, 2026, 3:13 PM EDT
Recruiting Phase 1 Interventional

Effects of Cannabidiol on Stress and Nicotine Withdrawal

NCT07001930
View directory record Official record
Conditions
CBD, Stress, Nicotine Dependence, Tobacco Smoking
Interventions
Epidiolex
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 70 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Oct 4, 2026, 3:13 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Biomarker Approach to Screening for the Early Detection of HPV-related Oropharyngeal Cancer (BASH OPC)

NCT06305676
View directory record Official record
Conditions
Oropharyngeal Cancer, HPV-Related Carcinoma
Interventions
combined HPV 16 DNA and host gene methylation oral biomarker panel
Diagnostic Test
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
3
States / cities
Tampa, Florida • Omaha, Nebraska • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Food Effect and CYP1A2 Induction Study in Healthy Subjects

NCT02168205
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Pomalidomide, Caffeine, Tobacco
Drug · Other
Lead sponsor
Celgene
Industry
Eligibility
40 Years to 80 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Daytona Beach, Florida
Source: ClinicalTrials.gov public record
Updated Nov 15, 2018 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Acute Pharmacokinetic and Pharmacodynamic Effects of "Tobacco-Free" Oral Nicotine Pouches in Smokers

NCT05335915
View directory record Official record
Conditions
Nicotine Withdrawal, Nicotine Addiction, Drug Effect
Interventions
Nicotine, Cigarette
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years and older
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Not applicable Interventional Results available

Varenicline or Nicotine Patch and Nicotine Gum in Helping Smokers in a Methadone Treatment Program Stop Smoking

NCT00790569
View directory record Official record
Conditions
Bladder Cancer, Cervical Cancer, Esophageal Cancer, Gastric Cancer, Head and Neck Cancer, Kidney Cancer, Leukemia, Liver Cancer, Lung Cancer, Pancreatic Cancer, Tobacco Use Disorder
Interventions
nicotine, varenicline, placebo
Drug · Other
Lead sponsor
Butler Hospital
Other
Eligibility
18 Years to 120 Years
Enrollment
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jun 6, 2018 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of Oral Tobacco as a Harm Reduction Method for Smokers

NCT00711100
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Camel Snus, Marlboro Snus, Stonewall, Ariva, General Snus
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 70 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
2
States / cities
Minneapolis, Minnesota • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 18, 2019 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tobacco Product Susceptibility and Substitutability by Rurality and Alcohol Use

NCT07010601
View directory record Official record
Conditions
Alcohol Use, E-cigarette Use, Cigarette Use
Interventions
Experimental Tobacco Marketplace, Hypothetical Novel Nicotine Product Purchase Tasks
Behavioral
Lead sponsor
Mark J Rzeszutek, PhD
Other
Eligibility
21 Years and older
Enrollment
737 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Oct 4, 2026, 3:13 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Oral Cannabidiol for Tobacco Cessation

NCT05445804
View directory record Official record
Conditions
Tobacco Use, Tobacco Smoking, Tobacco Dependence, Tobacco Use Disorder, Tobacco Use Cessation
Interventions
300 mg Cannabidiol, 600 mg Cannabidiol, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 4, 2026, 3:13 PM EDT
Recruiting Phase 2 Interventional

Examining the Effects of Cytisinicline on Neural Substrates of Cigarette Cue-reactivity

NCT06617312
View directory record Official record
Conditions
Smoking Cessation, Tobacco Use Disorder
Interventions
Cytisinicline, Placebo Oral Capsule
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Nicotine Lozenge to Reduce Smokeless Tobacco Use

NCT00218283
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Nicotine Lozenge, Behavioral Counseling
Drug · Behavioral
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 10, 2017 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Phase 2 Interventional Results available

Free Samples for Health

NCT05627596
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Ask-Advise-Refer, Nicotine Patch, 14 Mg/24 Hr Transdermal Film, Extended Release, Nicotine lozenge
Behavioral · Drug
Lead sponsor
Sandra Japuntich
Other
Eligibility
18 Years and older
Enrollment
1,239 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Not applicable Interventional Results available

Calcitriol in Preventing Lung Cancer in Smokers and Former Smokers at High Risk of Lung Cancer

NCT00690924
View directory record Official record
Conditions
Lung Cancer, Precancerous Condition, Tobacco Use Disorder
Interventions
calcitriol, laboratory biomarker analysis, pharmacological study
Drug · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
40 Years to 79 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2018
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 4, 2018 · Synced Oct 4, 2026, 3:13 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Imaging Extrastriatal Dopamine Release in Tobacco Smokers and Nonsmokers

NCT02348385
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Amphetamine
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Oct 4, 2026, 3:13 PM EDT
Recruiting Not applicable Interventional

Effects of E-cigs vs Pouches on Cigarette Smoking and Addiction

NCT06077240
View directory record Official record
Conditions
Smoking, Smoking Behaviors, Nicotine Dependence
Interventions
E-cigarette with 2.4% Nicotine with Menthol and Tobacco Flavors, E-cigarette with 2.4% Nicotine with Tobacco Flavor Only, E-cigarette with 5% Nicotine with Menthol and Tobacco Flavors, E-cigarette with 5% Nicotine with Tobacco Flavor Only, Tobacco Pouches with 3mg Nicotine with Menthol and Tobacco Flavors, Tobacco Pouches with 3mg Nicotine with Tobacco Flavor Only, Tobacco Pouches with 6mg Nicotine with Menthol and Tobacco Flavors, Tobacco Pouches with 6mg Nicotine with Tobacco Flavor Only
Behavioral
Lead sponsor
Yale University
Other
Eligibility
21 Years and older
Enrollment
256 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Early Phase 1 Interventional

Examining the Impact of Nicotine Pouches in Rural Ohio and Ohio Appalachia

NCT05730439
View directory record Official record
Conditions
Tobacco-Related Carcinoma
Interventions
Biospecimen Collection, Nicotine Oral Pouch, Questionnaire Administration, Smokeless Tobacco
Procedure · Drug · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 4, 2026, 3:13 PM EDT
Recruiting Phase 3 Interventional

V+PSF-M for Tobacco Cessation in HIV Care in India

NCT05786547
View directory record Official record
Conditions
Human Immunodeficiency Virus, Smoking Cessation, Smoking, Tobacco
Interventions
Varenicline, Positively Smoke Free Mobile (PSF-M), Standard Care
Drug · Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 15, 2025 · Synced Oct 4, 2026, 3:13 PM EDT
Recruiting Phase 2 Interventional

Informing Oral Nicotine Pouch Regulations to Promote Public Health

NCT06315881
View directory record Official record
Conditions
Tobacco-Related Carcinoma
Interventions
Biospecimen Collection, Cigarette, Nicotine Oral Pouch, Smokeless Tobacco, Survey Administration, Text Message-Based Navigation Intervention
Procedure · Drug · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A Comparison of Bupropion SR and Placebo for Smoking Cessation

NCT00176449
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Bupropion SR, Placebo Oral Tablet
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 64 Years · Female only
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2005
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 16, 2019 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

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

NCT01092650
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Oct 27, 2014 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Evoked Responses as Pharmacodynamic Biomarkers in Healthy and Schizophrenic Participants (MK-4334-007)

NCT05136690
View directory record Official record
Conditions
Cognitive Impairment Associated With Schizophrenia
Interventions
Nicotine patch, MK-4334, Placebo patch, Placebo capsule
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
2
States / cities
Long Beach, California • Marlton, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 29, 2024 · Synced Oct 4, 2026, 3:13 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Effectiveness of Combination Varenicline and Oral Nicotine Replacement Therapy (COMBO)

NCT03722966
View directory record Official record
Conditions
Smoking Cessation
Interventions
Varenicline, Oral Nicotine Replacement Therapy (NRT), Medication Reminders, Tobacco Cessation Counseling
Drug · Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Feb 6, 2024 · Synced Oct 4, 2026, 3:13 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy of Oral Tobacco Products Compared to a Medicinal Nicotine

NCT00710034
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Oral tobacco, Nicotine Gum
Other · Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 70 Years
Enrollment
391 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
2
States / cities
Minneapolis, Minnesota • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 6, 2017 · Synced Oct 4, 2026, 3:13 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cigarette Smoking and Oral Microbiota

NCT01862809
View directory record Official record
Conditions
Microbiota, Lung Cancer, Oral Cancer
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
25 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2020
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jun 30, 2020 · Synced Oct 4, 2026, 3:13 PM EDT