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ClinicalTrials.gov public records Last synced Oct 22, 2026, 2:39 PM EDT

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Showing 1–24 of 47 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Placebo lozenge Clear all
Completed Phase 4 Interventional Results available

Smoking Cessation Medications: Efficacy, Mechanisms and Algorithms

NCT00332644
View directory record Official record
Conditions
Nicotine Dependence
Interventions
nicotine patch, nicotine lozenge, nicotine patch + nicotine lozenge, bupropion, bupropion + lozenge, placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1,504 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 30, 2011 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 3 Interventional Results available

Progesterone vs Placebo Therapy for Women With Epilepsy

NCT00029536
View directory record Official record
Conditions
Epilepsy
Interventions
Progesterone Lozenges, Matched Placebo Lozenges
Biological · Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
13 Years to 45 Years · Female only
Enrollment
294 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2010
U.S. locations
14
States / cities
Los Angeles, California • Atlanta, Georgia • Baltimore, Maryland + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2017 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Not applicable Interventional Results available

Nicotinic Enhancement of Cognitive Remediation Training in Schizophrenia

NCT02069392
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Cognitive remediation training, Nicotine polacrilex lozenge
Behavioral · Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 60 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 12, 2019 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 1Phase 2 Interventional

Phase 1b Food Based Modulation of Biomarkers in Human Tissues at High-Risk for Oral Cancer.

NCT01469429
View directory record Official record
Conditions
Metastatic Squamous Neck Cancer With Occult Primary Squamous Cell Carcinoma, Salivary Gland Squamous Cell Carcinoma, Stage 0 Hypopharyngeal Cancer, Stage 0 Laryngeal Cancer, Stage 0 Lip and Oral Cavity Cancer, Stage 0 Nasopharyngeal Cancer, Stage 0 Oropharyngeal Cancer, Stage 0 Paranasal Sinus and Nasal Cavity Cancer, Stage I Salivary Gland Cancer, Stage I Squamous Cell Carcinoma of the Hypopharynx, Stage I Squamous Cell Carcinoma of the Larynx, Stage I Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage I Squamous Cell Carcinoma of the Nasopharynx, Stage I Squamous Cell Carcinoma of the Oropharynx, Stage I Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity, Stage I Verrucous Carcinoma of the Larynx, Stage I Verrucous Carcinoma of the Oral Cavity, Stage II Salivary Gland Cancer, Stage II Squamous Cell Carcinoma of the Hypopharynx, Stage II Squamous Cell Carcinoma of the Larynx, Stage II Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage II Squamous Cell Carcinoma of the Nasopharynx, Stage II Squamous Cell Carcinoma of the Oropharynx, Stage II Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity, Stage II Verrucous Carcinoma of the Larynx, Stage II Verrucous Carcinoma of the Oral Cavity, Stage III Salivary Gland Cancer, Stage III Squamous Cell Carcinoma of the Hypopharynx, Stage III Squamous Cell Carcinoma of the Larynx, Stage III Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage III Squamous Cell Carcinoma of the Nasopharynx, Stage III Squamous Cell Carcinoma of the Oropharynx, Stage III Verrucous Carcinoma of the Larynx, Stage III Verrucous Carcinoma of the Oral Cavity, Stage IV Squamous Cell Carcinoma of the Hypopharynx, Stage IV Squamous Cell Carcinoma of the Nasopharynx, Stage IVA Salivary Gland Cancer, Stage IVA Squamous Cell Carcinoma of the Larynx, Stage IVA Oral Cavity Squamous Cell Carcinoma, Stage IVA Squamous Cell Carcinoma of the Oropharynx, Stage IVA Nasal Cavity and Paranasal Sinus Cancer, Stage IVA Verrucous Carcinoma of the Larynx, Stage IVA Verrucous Carcinoma of the Oral Cavity, Stage IVB Salivary Gland Cancer, Stage IVB Squamous Cell Carcinoma of the Larynx, Stage IVB Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage IVB Squamous Cell Carcinoma of the Oropharynx, Stage IVB Oral Cavity Squamous Cell Carcinoma, Stage IVB Verrucous Carcinoma of the Larynx, Stage IVB Verrucous Carcinoma of the Oral Cavity, Stage IVC Salivary Gland Cancer, Stage IVC Squamous Cell Carcinoma of the Larynx, Stage IVC Oral Cavity Squamous Cell Carcinoma, Stage IVC Squamous Cell Carcinoma of the Oropharynx, Paranasal Sinus and Nasal Cavity Squamous Cell Carcinoma, Stage IVC Verrucous Carcinoma of the Larynx, Stage IVC Verrucous Carcinoma of the Oral Cavity, Tongue Cancer
Interventions
placebo, laboratory biomarker analysis, questionnaire administration, chemoprevention
Other · Drug
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 20, 2020 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Not applicable Interventional

Zinc Lozenges and Their Effect on Postoperative Sore Throat Syndrome

NCT02405832
View directory record Official record
Conditions
Sore Throat, Post-Operative Sore Throat
Interventions
Zinc, Placebo
Dietary Supplement
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Aug 10, 2018 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 4 Interventional Results available

Evaluation of National Cancer Institute (NCI) Smoking Intervention Resources

NCT01342523
View directory record Official record
Conditions
Smoking Cessation, Smoking, Nicotine Dependence
Interventions
CIS - telephone cessation quitline counseling, Lozenge - nicotine mini-lozenges, Emails - Brief smoking prevention messages, Full website - standard smokefree.gov website content, Lite website - lite version of smokefree.gov, Full mailed booklet - NCI's detailed 36-page quit guide, brief mailed booklet - smaller version of NCI's booklet
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1,034 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 14, 2015 · Synced Oct 22, 2026, 2:39 PM EDT
Terminated Phase 2 Interventional

Interferon-alpha Treatment of Chronic Cough in Chronic Obstructive Pulmonary Disease and Idiopathic Pulmonary Fibrosis

NCT00690885
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive, Pulmonary Fibrosis, Cough
Interventions
interferon-alpha lozenges, placebo lozenges
Drug
Lead sponsor
Ainos, Inc. (f/k/a Amarillo Biosciences Inc.
Industry
Eligibility
40 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Apr 24, 2012 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Not applicable Interventional Results available

A Clinical Trial to Evaluate Long-term Efficacy and Safety of Lozenges Containing Lactobacilli Reuteri (Prodentis™) on Gingivitis

NCT01811316
View directory record Official record
Conditions
Gingivitis
Interventions
Probiotics
Other
Lead sponsor
Sunstar Americas
Industry
Eligibility
18 Years to 65 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 7, 2017 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Not applicable Interventional Results available

Medicinal Nicotine for Preventing Cue Induced Craving

NCT02347605
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Nicotine lozenge 4 mg, Placebo lozenge
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 64 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 18, 2017 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Varenicline and Combined NRT for Smoking Cessation

NCT02271919
View directory record Official record
Conditions
Cigarette Smoker, Tobacco Use Disorder
Interventions
Nicotine Lozenge, Nicotine Patch, Placebo, Tobacco Cessation Counseling, Varenicline
Drug · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years to 75 Years
Enrollment
631 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 24, 2026 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Clinical Study of the Effect of Two Experimental Lozenges on Oral Malodor After Single Use

NCT05950529
View directory record Official record
Conditions
Oral Malodor
Interventions
Experimental lozenge with the enzyme Polyphenol oxidase and green coffee extract, Experimental lozenge with the enzyme Polyphenol oxidase, green coffee extract and flavor, Placebo lozenge control (sorbitol only), No product
Other
Lead sponsor
Novozymes A/S
Industry
Eligibility
18 Years and older
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 18, 2023 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 2 Interventional

Evaluating the Dietary Supplement Anatabloc in Thyroid Health-ASAP (Antabloc Supplementation Autoimmune Prevention)

NCT01551498
View directory record Official record
Conditions
Thyroiditis, Autoimmune
Interventions
Anatabloc Supplement, Placebo
Dietary Supplement
Lead sponsor
Rock Creek Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
9
States / cities
West Palm Beach, Florida • Zephyrhills, Florida • La Grange, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Nov 2, 2015 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Nicotine on Brain Reward Pathways

NCT02346539
View directory record Official record
Conditions
Depressive Disorder
Interventions
Nicotine polacrilex
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 22, 2018 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 3 Interventional Results available

A Study of Flurbiprofen 8.75 mg Lozenge in Patients With Pharyngitis

NCT01048866
View directory record Official record
Conditions
Pharyngitis
Interventions
placebo, flurbiprofen, acetaminophen 650mg
Drug
Lead sponsor
Reckitt Benckiser LLC
Industry
Eligibility
18 Years and older
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 21, 2017 · Synced Oct 22, 2026, 2:39 PM EDT
Active, not recruiting Not applicable Interventional

SLeep and OPioid UsE in Patients Undergoing Total Knee Arthroplasty

NCT04247646
View directory record Official record
Conditions
Opioid Use, Pain, Postoperative, Sleep, Delirium
Interventions
Melatonin, Placebo
Dietary Supplement
Lead sponsor
Scripps Health
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jan 24, 2024 · Synced Oct 22, 2026, 2:39 PM EDT
Terminated Phase 2 Interventional

Study to Evaluate Dietary Supplementation With a Version of Anatabloc(R) in Subjects With Alzheimer's Disease

NCT01669876
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Anatabloc(R), Placebo
Dietary Supplement
Lead sponsor
Rock Creek Pharmaceuticals, Inc.
Industry
Eligibility
65 Years to 90 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Sarasota, Florida
Source: ClinicalTrials.gov public record
Updated Apr 30, 2015 · Synced Oct 22, 2026, 2:39 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Probiotic Effect on Dietary Nitrate to Plasma Nitrite Production ( OPEDNPN )

NCT06375694
View directory record Official record
Conditions
Hypertension, Cardiovascular Diseases, Diabetes
Interventions
Herbiotics Oral + Ent Probiotic, Placebo
Dietary Supplement
Lead sponsor
Wake Forest University
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 19, 2024 · Synced Oct 22, 2026, 2:39 PM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

Study of the Effects of an Oral Nitric Oxide Supplement on Blood Pressure in Prehypertensive Adults

NCT01937754
View directory record Official record
Conditions
Prehypertension
Interventions
Nitric Oxide supplement, Placebo
Dietary Supplement
Lead sponsor
Neogenis Laboratories
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2013
U.S. locations
1
States / cities
Beverly Hills, California
Source: ClinicalTrials.gov public record
Updated Sep 10, 2013 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 2 Interventional Results available

Treatment of Oral Warts in HIV+ Patients

NCT00454181
View directory record Official record
Conditions
Papillomatosis, HIV Infections
Interventions
Interferon-alpha, placebo
Drug · Other
Lead sponsor
Ainos, Inc. (f/k/a Amarillo Biosciences Inc.
Industry
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
12
States / cities
San Francisco, California • Fort Lauderdale, Florida • Augusta, Georgia + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 16, 2011 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of an Oral Probiotic Intervention With or Without a Novel ADP-1 Toothpaste

NCT05330793
View directory record Official record
Conditions
Oral Health
Interventions
Oral probiotic, Placebo
Dietary Supplement
Lead sponsor
USANA Health Sciences
Industry
Eligibility
18 Years to 65 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
South Jordan, Utah
Source: ClinicalTrials.gov public record
Updated Apr 21, 2023 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 3 Interventional Results available

Placebo-Controlled Onset-of-Action Study of Flurbiprofen Utilizing the Double-Stopwatch Method

NCT01986361
View directory record Official record
Conditions
Acute Pharyngitis, Sore Throat
Interventions
flurbiprofen, placebo
Drug
Lead sponsor
Reckitt Benckiser LLC
Industry
Eligibility
18 Years and older
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 28, 2017 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 3 Interventional

Xylitol Adult Caries Trial (X-ACT)

NCT00393055
View directory record Official record
Conditions
Dental Caries
Interventions
xylitol, inactive lozenge
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
25 Years to 80 Years
Enrollment
709 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
3
States / cities
Birmingham, Alabama • Chapel Hill, North Carolina • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Sep 12, 2011 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Pilot Study to Evaluate the Efficacy of Ariva® Silver Wintergreen, a Smoking Aversive Lozenge

NCT01336816
View directory record Official record
Conditions
Tobacco Use Disorder, Smoking
Interventions
Ariva Silver Wintergreen, Placebo Wintergreen
Other
Lead sponsor
Star Scientific, Inc
Industry
Eligibility
23 Years to 72 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Martinsburg, West Virginia
Source: ClinicalTrials.gov public record
Updated Oct 24, 2014 · Synced Oct 22, 2026, 2:39 PM EDT
Completed Not applicable Interventional

Nitric Oxide Supplementation on Neurocognitive Functions in Patients With ASLD

NCT03064048
View directory record Official record
Conditions
Argininosuccinate Lyase Deficiency, Urea Cycle Disorder, Urea Cycle Disorders, Inborn, Argininosuccinic Aciduria
Interventions
Neo-ASA, Placebo
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
6 Years to 50 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 27, 2023 · Synced Oct 22, 2026, 2:39 PM EDT