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ClinicalTrials.gov public records Last synced Oct 21, 2026, 5:31 PM EDT

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Showing 1–24 of 332 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: chewing gum Clear all
Terminated Phase 4 Interventional Accepts healthy volunteers

Testing Pharmacological Therapies for Pregnant Smokers

NCT00224419
View directory record Official record
Conditions
Smoking, Pregnancy
Interventions
Motivational interviewing for smoking cessation, Cognitive behaviors therapy, CBT + NRT
Behavioral · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
181 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2003
U.S. locations
2
States / cities
Durham, North Carolina • Fayetteville, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 21, 2014 · Synced Oct 21, 2026, 5:31 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 21, 2026, 5:31 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Tobacco Intervention in Buprenorphine Treatment

NCT01350011
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Innovative System, Standard Treatment Control (STC)
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2016
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 13, 2018 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Not applicable Interventional

Dietary Fiber for Fecal Incontinence

NCT01738607
View directory record Official record
Conditions
Fecal Incontinence
Interventions
Psyllium, Gum Arabic, carboxymethylcellulose, Placebo
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
206 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 9, 2023 · Synced Oct 21, 2026, 5:31 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Episodic Future Thinking and Future Thinking Priming for Smoking Cessation

NCT04297332
View directory record Official record
Conditions
Tobacco-Related Carcinoma
Interventions
Behavioral Intervention, Informational Intervention, Nicotine Replacement, Telephone-Based Intervention
Behavioral · Other · Drug
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Oct 21, 2026, 5:31 PM EDT
Completed No phase listed Observational

Periodontal Treatment Response in Type II Diabetic Patients

NCT01881074
View directory record Official record
Conditions
Type II Diabetes, Periodontal Disease
Interventions
Triclosan containing toothpaste, Non-triclosan containing toothpaste
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 17, 2018 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparion of Effects of Two Different Power Toothbrushes on Plaque and Gum Health

NCT07813546
View directory record Official record
Conditions
Gingiviits
Interventions
oscillating-rotating powered toothbrush, side-to-side powered toothbrush
Device
Lead sponsor
Philips Clinical & Medical Affairs Global
Industry
Eligibility
18 Years to 59 Years
Enrollment
295 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Enhancing Smoking Cessation in the Homeless Population

NCT01932996
View directory record Official record
Conditions
Cigarette Smoking, Tobacco Smoking, Smoking, Tobacco
Interventions
nicotine patch plus nicotine gum/lozenge, Intensive Alcohol Intervention
Drug · Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 75 Years
Enrollment
352 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 19, 2020 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Phase 1 Interventional Results available

Glycemic Effect of Diazoxide in NAFLD

NCT05729282
View directory record Official record
Conditions
Hyperinsulinemia, Insulin Resistance, Non-Alcoholic Fatty Liver Disease, Prediabetic State
Interventions
Diazoxide oral suspension, 1 mg per kg per dose, Diazoxide oral suspension, 2 mg per kg per dose, Placebo, FreeStyle Libre Pro, Deuterated water (2H2O/D2O)
Drug · Device
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 70 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 30, 2026 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Comparing Over-the-counter Dry Mouth Remedies After Radiation

NCT00595933
View directory record Official record
Conditions
Xerostomia
Interventions
sugar-free chewing gum, chewing gum, mouth rinse, mouth spray
Other · Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
13 Years and older
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Sep 7, 2022 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Not applicable Interventional

Durham Housing Authority (DHA) Community Health Advisor (CHA) Smoking Cessation Project

NCT04114526
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine Replacement Therapy
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 12, 2020 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Phase 2Phase 3 Interventional Results available

CPT and Smoking Cessation

NCT01901848
View directory record Official record
Conditions
Stress Disorders, Post-Traumatic, Smoking
Interventions
Cognitive Processing Therapy (CPT), Bupropion, nicotine replacement therapy (NRT), Integrated Care for Smoking Cessation (ICSC), smokefreeVET
Behavioral · Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 11, 2018 · Synced Oct 21, 2026, 5:31 PM EDT
Completed No phase listed Observational

Genes Associated With Hereditary and Drug-Induced Gingival Overgrowth

NCT00104026
View directory record Official record
Conditions
Gingival Overgrowth
Interventions
Not listed
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
2 Years to 80 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Phase 4 Interventional Results available

Identifying Treatments to Motivate Smokers to Quit

NCT01122238
View directory record Official record
Conditions
Smoking, Smoking Cessation, Motivation, Nicotine Dependence
Interventions
Nicotine Patch, Nicotine Gum, Motivational Interviewing, Smoking Reduction, No Intervention, Nicotine Patch + Nicotine Gum
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
517 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 16, 2015 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of Abuse Liability of Very Low Nicotine (VLN) Mentholated Cigarettes

NCT03559725
View directory record Official record
Conditions
Tobacco Use
Interventions
VLN menthol cigarettes (A), Usual Brand Menthol Cigarettes (B), Nicotine gum (C)
Other · Drug
Lead sponsor
22nd Century Group, Inc.
Industry
Eligibility
22 Years to 65 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 25, 2020 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effectiveness of Various Smoking Cessation Therapies in Reducing Smoking in Adolescents - 1

NCT00158171
View directory record Official record
Conditions
Smoking Cessation, Tobacco Use Disorder
Interventions
Nicotine Replacement Therapies, Nicotine patch, Folic Acid
Drug · Dietary Supplement
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
13 Years to 18 Years
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2004
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 10, 2017 · Synced Oct 21, 2026, 5:31 PM 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 21, 2026, 5:31 PM EDT
Completed Not applicable Interventional

Effect of Gum Arabic on Gastrointestinal Transit and Permeability

NCT03742076
View directory record Official record
Conditions
Diverticulitis
Interventions
High-dose prebiotic, Low-dose prebiotic, Placebo
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 10, 2023 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Research and Innovation to Stop E-cigarette/Vaping in Young Adults

NCT04974580
View directory record Official record
Conditions
Nicotine Dependence, E-Cig Use
Interventions
Nicotine patch, Phone Counseling, Digital Coaching
Drug · Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 24 Years
Enrollment
508 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 29, 2024 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Bronchoscopy in Determining the Effect of E-Cigarette Smoking on Biomarkers in the Lungs

NCT03691350
View directory record Official record
Conditions
Cigarette Smoker, Current Every Day Smoker
Interventions
Bronchoscopy with Bronchoalveolar Lavage, Cigarette, Electronic Cigarette, Laboratory Biomarker Analysis, Nicotine Replacement, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 52 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A Twelve Week Study of Prototypes Mouth Rinses

NCT05526586
View directory record Official record
Conditions
Healthy
Interventions
Colgate Cavity Protection Toothpaste, Zero Alcohol Gum Prototype, Alcohol Gum Prototype, Listerine Cool Mint Antiseptic Mouthwash, 5% Hydroalcohol
Other
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
18 Years and older
Enrollment
192 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 5, 2023 · Synced Oct 21, 2026, 5:31 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Chewing Gum for Weight Loss

NCT00971347
View directory record Official record
Conditions
Obesity, Overweight, Weight Loss
Interventions
Extra sugar-free chewing gum sticks, nutrition brochure
Other · Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 50 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 23, 2010 · Synced Oct 21, 2026, 5:31 PM 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 21, 2026, 5:31 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Dimensional Changes: Randomized Clinical Trial

NCT05684068
View directory record Official record
Conditions
Gingival Recession
Interventions
Gum Graft Placed on Denuded Bone, Gum Graft Placed on Split Thickness Periosteal Bed Preparation
Procedure
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 95 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2028 – 2031
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 21, 2026, 5:31 PM EDT