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ClinicalTrials.gov public records Last synced Sep 28, 2026, 11:32 AM EDT

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Showing 25–47 of 23 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: placebo lozenges Clear all
Completed Phase 3 Interventional Results available

Nicotine Lozenges for Treatment of Smokeless Tobacco Addiction

NCT00392379
View directory record Official record
Conditions
Smokeless Tobacco Use
Interventions
Nicotine Lozenges, Placebo lozenge
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
2
States / cities
Rochester, Minnesota • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 23, 2013 · Synced Sep 28, 2026, 11:32 AM 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 29, 2015 · Synced Sep 28, 2026, 11:32 AM 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 9, 2018 · Synced Sep 28, 2026, 11:32 AM 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 9, 2013 · Synced Sep 28, 2026, 11:32 AM EDT
Completed Early Phase 1 Interventional Results available

Using MASL to Combat Oral Cancer

NCT04188665
View directory record Official record
Conditions
Squamous Cell Carcinoma of Head and Neck
Interventions
MASL, Placebo
Drug · Other
Lead sponsor
Rowan University
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
4
States / cities
Newark, New Jersey • Stratford, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Sep 28, 2026, 11:32 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Enzymes on Dental Biofilm Accumulation

NCT05579938
View directory record Official record
Conditions
Dental Plaque
Interventions
Enzyme-containing lozenge, Placebo lozenge
Dietary Supplement
Lead sponsor
Novozymes A/S
Industry
Eligibility
18 Years to 75 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 11, 2023 · Synced Sep 28, 2026, 11:32 AM EDT
Completed Phase 3 Interventional Results available

A Study of Flurbiprofen 8.75 mg Lozenge in Patient With Pharyngitis

NCT01049334
View directory record Official record
Conditions
Pharyngitis
Interventions
Placebo, Flurbiprofen
Drug
Lead sponsor
Reckitt Benckiser LLC
Industry
Eligibility
18 Years and older
Enrollment
204 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 20, 2017 · Synced Sep 28, 2026, 11:32 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Smoking Relapse Prevention in Schizophrenia

NCT00320697
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Smokers
Interventions
bupropion + nicotine patch + nicotine gum or lozenges, Placebo pill + placebo patch
Drug
Lead sponsor
North Suffolk Mental Health Association
Other
Eligibility
18 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 26, 2016 · Synced Sep 28, 2026, 11:32 AM 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 23, 2024 · Synced Sep 28, 2026, 11:32 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Acute and Chronic Nicotine Modulation of Reinforcement Learning

NCT01830842
View directory record Official record
Conditions
Nicotine Addiction
Interventions
Nicotine polacrilex, Placebo, satiety, abstinence
Drug · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 55 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 18, 2017 · Synced Sep 28, 2026, 11:32 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effects of Neo40(TM) With Caffeine on Cycling Time Trial Performance

NCT01710761
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Nitrate supplement with caffeine
Dietary Supplement
Lead sponsor
University of Texas at Austin
Other
Eligibility
21 Years to 49 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2013 · Synced Sep 28, 2026, 11:32 AM 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 20, 2017 · Synced Sep 28, 2026, 11:32 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Evaluation of a Daily Oral Care Lozenge on Oral Health and Quality of Life in Older Adults

NCT03693027
View directory record Official record
Conditions
Oral Health
Interventions
PTx800 lozenges, Placebo control
Dietary Supplement
Lead sponsor
Primal Therapies Inc.
Industry
Eligibility
60 Years to 85 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 8, 2018 · Synced Sep 28, 2026, 11:32 AM EDT
Completed Early Phase 1 Interventional Results available

Treatment of HFpEF With Nitrate Supplement

NCT03289481
View directory record Official record
Conditions
Heart Failure With Normal Ejection Fraction
Interventions
Active lozenge, Placebo
Dietary Supplement · Drug
Lead sponsor
MaineHealth
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Rockport, Maine
Source: ClinicalTrials.gov public record
Updated Oct 5, 2021 · Synced Sep 28, 2026, 11:32 AM 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 27, 2017 · Synced Sep 28, 2026, 11:32 AM 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 6, 2017 · Synced Sep 28, 2026, 11:32 AM EDT
Completed Not applicable Interventional

The Oral Microbiome in OSCC

NCT04925700
View directory record Official record
Conditions
Oral Cancer
Interventions
ProDentis Lozenge, Placebo Lozenge
Dietary Supplement · Other
Lead sponsor
University of Iowa
Other
Eligibility
21 Years to 89 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 17, 2023 · Synced Sep 28, 2026, 11:32 AM 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 11, 2011 · Synced Sep 28, 2026, 11:32 AM 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 13, 2015 · Synced Sep 28, 2026, 11:32 AM 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 23, 2026 · Synced Sep 28, 2026, 11:32 AM 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 20, 2023 · Synced Sep 28, 2026, 11:32 AM EDT
Completed Phase 4 Interventional Results available

Pilot Study: Preoperative Nicotine Lozenges

NCT00586482
View directory record Official record
Conditions
Smoking
Interventions
Nicotine Lozenge, Placebo Lozenge, Abstinence Advisement
Drug · Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 21, 2014 · Synced Sep 28, 2026, 11:32 AM EDT
Terminated Phase 2 Interventional

An Outpatient Study Investigating Non-prescription Treatments for COVID-19

NCT04621149
View directory record Official record
Conditions
COVID-19
Interventions
chlorine dioxide, zinc acetate, Famotidine, placebo, lactoferrin, green tea extract
Other · Dietary Supplement · Drug
Lead sponsor
Profact, Inc.
Other
Eligibility
20 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 29, 2022 · Synced Sep 28, 2026, 11:32 AM EDT