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Showing 1–24 of 56 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Smokeless Tobacco Use Clear all
Completed Not applicable Interventional Results available

Individualized vs. Household MRSA Decolonization

NCT01814371
View directory record Official record
Conditions
Staphylococcal Skin Infection, Abscess, Furunculosis, Staphylococcus Aureus, MRSA Infection
Interventions
2% mupirocin ointment, Bleach Bath (dilute), Hygiene Protocol
Drug · Other · Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
Not listed
Enrollment
474 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 20, 2019 · Synced Sep 13, 2026, 5:24 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Human Laboratory Study of Smokeless Tobacco Products

NCT01100216
View directory record Official record
Conditions
Smokeless Tobacco
Interventions
Nicotine Lozenge, Stonewall Dissolvable Tobacco Pieces, Camel Snus Frost, Skoal Wintergreen
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 60 Years · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 9, 2014 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Not applicable Interventional Results available

Neurocognitive Factors in Substance Use Treatment Response: The Ways of Rewarding Abstinence Project

NCT03799341
View directory record Official record
Conditions
Cocaine Use Disorder
Interventions
Prize-Based Contingency Management, Treatment As Usual Outpatient Substance Use Treatment
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 75 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Pilot Study Evaluating Nicotine Lozenges and Self Help

NCT00888459
View directory record Official record
Conditions
Smokeless Tobacco Use
Interventions
nicotine replacement therapy, placebo NRT
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Male only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
2
States / cities
Rochester, Minnesota • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 22, 2023 · Synced Sep 13, 2026, 5:24 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Metabolism of Deuterated NNN in Smokeless Tobacco Users

NCT02414477
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jan 29, 2025 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Methods Project 4: Clinical Trial

NCT01867242
View directory record Official record
Conditions
Smoker
Interventions
Cigarettes, Snus
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
3
States / cities
Minneapolis, Minnesota • Buffalo, New York • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 2, 2023 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Not applicable Interventional

Tobacco Cessation Via Doctors of Chiropractic

NCT00386945
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Brief counseling (Ask, Advise, Arrange)
Behavioral
Lead sponsor
Oregon Research Institute
Other
Eligibility
18 Years and older
Enrollment
201 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 25, 2011 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD190103: A Study to Assess Nicotine Pharmacokinetic Parameters After Use of Two Smokeless Tobacco Products

NCT03993795
View directory record Official record
Conditions
Tobacco Use
Interventions
A19010-W, B19010-F
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
6
States / cities
Rogers, Arkansas • Lexington, Kentucky • Springfield, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 24, 2019 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Phase 2 Interventional

Tobacco Quitlines:Adjunct to Dental Office Tobacco Intervention

NCT00384254
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
5 A, 3 A
Behavioral
Lead sponsor
Oregon Research Institute
Other
Eligibility
18 Years and older
Enrollment
2,177 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Oct 25, 2011 · Synced Sep 13, 2026, 5:24 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Efficacy of Conventional Screening Versus mHealth Screening in Early Detection of Oral Potentially Malignant Disorders and Oral Cancer Amongst the Rural Population of Varanasi: A Prospective and Blinded Study

NCT06535867
View directory record Official record
Conditions
Smoking, Smoking, Cigarette, Smoking, Tobacco, Betel Chewer's Mucosa, Tobacco Use, Tobacco Smoking, Alcohol Drinking, Smokeless Tobacco Hyperkeratosis
Interventions
mHealth
Diagnostic Test
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
5,122 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2031
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Novel Determinants and Measures of Smokeless Tobacco Use: Study 2

NCT01067599
View directory record Official record
Conditions
Tobacco Use Disorder, Nicotine Dependence
Interventions
Low nicotine, Medium nicotine, High nicotine
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
278 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
2
States / cities
Minneapolis, Minnesota • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 25, 2018 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effectiveness of Using Tobacco Free Snuff in Reducing Negative Effects of Smokeless Tobacco Use

NCT00218270
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Tobacco free snuff
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 70 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2005
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 9, 2017 · Synced Sep 13, 2026, 5:24 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Study Assessing the Usability and Patient Satisfaction With Digital Urinalysis in the Context of Routine Pre-natal Care.

NCT03134274
View directory record Official record
Conditions
Pregnancy
Interventions
Dip HBDA
Device
Lead sponsor
Healthy.io Ltd.
Industry
Eligibility
18 Years and older · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 21, 2017 · Synced Sep 13, 2026, 5:24 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Preventing Relapse Following Involuntary Smoking Abstinence

NCT01374724
View directory record Official record
Conditions
Smoking, Smoking Cessation
Interventions
Tobacco Use Ban, Tailored Pamphlet, Informational Pamphlet, Relapse Prevention Intervention
Behavioral
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years and older
Enrollment
23,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
2
States / cities
Memphis, Tennessee • Lackland Air Force Base, Texas
Source: ClinicalTrials.gov public record
Updated Oct 31, 2016 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Highdose Nicotine Patch Therapy for Smokeless Tobacco Use

NCT00939029
View directory record Official record
Conditions
Smokeless Tobacco Use
Interventions
nicotine replacement therapy (nicotine patches), placebo NRT
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 55 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 18, 2014 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Text-based Reduction Intervention for Smokeless Tobacco Cessation- Pilot Study

NCT06637358
View directory record Official record
Conditions
Smokeless Tobacco Cessation
Interventions
Extended Scheduled Gradual Reduction (SGR), Quit Coach
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Sep 13, 2026, 5:24 AM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

Use of Allograft Adipose Matrix for Small Joint Arthritis of the Hand

NCT05747469
View directory record Official record
Conditions
Osteoarthritis Hand
Interventions
local anaesthetic injection, Human Adipose Allograft
Drug · Procedure
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 1, 2026 · Synced Sep 13, 2026, 5:24 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Tobacco Cut and Nicotine Form on the Abuse Liability of Moist Snuff

NCT06249984
View directory record Official record
Conditions
Tobacco-Related Carcinoma
Interventions
Biospecimen Collection, Carbon Monoxide Measurement, Smokeless Tobacco Use, Survey Administration
Procedure · Behavioral · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
2
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Varenicline for the Treatment of Smokeless Tobacco

NCT00813917
View directory record Official record
Conditions
Nicotine Dependence
Interventions
varenicline, placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 15, 2012 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Comparison Across Treatment Conditions to Reduce Smokeless Tobacco Use

NCT00218296
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Usual Care Group, Reduction Group
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 70 Years
Enrollment
332 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 15, 2017 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Phase 1Phase 2 Interventional

Using Smokeless Tobacco Products With Lower Nicotine Levels to Reduce Negative Effects of Smokeless Tobacco Use

NCT00218244
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Lower Nicotine Smokeless Tobacco Product, Behavioral Counseling
Other
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 70 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2004
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 9, 2017 · Synced Sep 13, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Smokeless Tobacco Cessation Intervention for Firefighters

NCT05111041
View directory record Official record
Conditions
Smokeless Tobacco Cessation
Interventions
#EnufSnuff.TXT- First Responder, Enough Snuff Intervention
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Sep 13, 2026, 5:24 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Nornicotine in Smokeless Tobacco as a Precursor for Carcinogen Exposure

NCT03998735
View directory record Official record
Conditions
Smokeless Tobacco
Interventions
Herbal Snuff (Smokeless Tobacco)
Drug
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Sep 13, 2026, 5:24 AM 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 5, 2017 · Synced Sep 13, 2026, 5:24 AM EDT