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ClinicalTrials.gov public records Last synced Oct 30, 2026, 6:01 PM EDT

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Showing 1–24 of 52 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Placebo candy Clear all
Completed Phase 1Phase 2 Interventional

Acute Nicotine Gum and Tinnitus Loudness in Non-Smoking Adults

NCT07772089
View directory record Official record
Conditions
Tinnitus, Chronic Subjective Tinnitus
Interventions
Nicotine polacrilex gum 4 mg, Placebo gum
Drug · Other
Lead sponsor
San Diego State University
Other
Eligibility
18 Years to 80 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Phase 1 Interventional

Effect of Tadalafil on Exercise Capacity in Pediatric Fontan Patients

NCT01291069
View directory record Official record
Conditions
Single Ventricle
Interventions
Tadalafil Citrate, Sugar pill
Drug
Lead sponsor
University of Utah
Other
Eligibility
8 Years to 35 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Oct 30, 2026, 6:01 PM EDT
Terminated Phase 4 Interventional Results available

Nicotine Gum Recovery After Colorectal Surgery

NCT01662115
View directory record Official record
Conditions
Post-operative Ileus
Interventions
Nicotine gum, Regular chewing gum
Drug · Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 85 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Weston, Florida
Source: ClinicalTrials.gov public record
Updated Aug 22, 2017 · Synced Oct 30, 2026, 6:01 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

The Use of Functional Confections in Promoting Oral Health

NCT01514552
View directory record Official record
Conditions
Oral Health, Oral Cancer, Gum Disease
Interventions
Strawberry gummy, Placebo control gummy
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 70 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Oct 30, 2026, 6:01 PM EDT
Withdrawn Phase 3 Interventional Accepts healthy volunteers

Intracervical Balloon Placement With Nitrous Oxide Administration

NCT06498908
View directory record Official record
Conditions
Labor Pain, Induced; Birth
Interventions
Nitrous oxide, Oxygen
Drug
Lead sponsor
Jefferson Drapkin
Other
Eligibility
18 Years to 45 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Oct 30, 2026, 6:01 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Vitamin D Intervention and Associated Changes in the Gut Microbiome and Vitamin D Levels in Healthy Adults

NCT05387876
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Vitamin D intervention, Placebo intervention
Dietary Supplement
Lead sponsor
Baylor University
Other
Eligibility
18 Years to 79 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Waco, Texas
Source: ClinicalTrials.gov public record
Updated May 24, 2022 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cardiometabolic Effects of Sweet Cherry Juice

NCT03948061
View directory record Official record
Conditions
Obesity, Metabolic Syndrome
Interventions
Cherry juice, Placebo beverage
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
20 Years to 65 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Oct 27, 2023 · Synced Oct 30, 2026, 6:01 PM EDT
Terminated Phase 4 Interventional

Oral Vancomycin for Preventing Clostridium Difficile Recurrence

NCT03200093
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Oral Vancomycin, Placebo
Drug
Lead sponsor
Rochester General Hospital
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 26, 2021 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Safety, Tolerability and Efficacy of the Nicotine Patch and Gum for the Treatment of Adolescent Tobacco Dependence

NCT01208935
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Nicotine Patch, Nicotine Gum
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
13 Years to 17 Years
Enrollment
157 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2004
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 12, 2017 · Synced Oct 30, 2026, 6:01 PM EDT
Not yet recruiting Phase 1 Interventional

Impact of Sweeteners on the Addictive Threshold of Nicotine

NCT07771725
View directory record Official record
Conditions
Smoking ( Cigarette)
Interventions
Nicotine 0.05 mg/pulse and 0.1 mg/pulse, Saline Placebo (0.5mL injection), sucralose, Sugar syrup (Placebo)
Drug · Dietary Supplement
Lead sponsor
Yale University
Other
Eligibility
21 Years to 59 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Bupropion Alone or Combined With Nicotine Gum

NCT01621022
View directory record Official record
Conditions
Tobacco Dependence
Interventions
bupropion + nicotine gum, Active bupropion-Placebo gum, Placebo bupropion-Placebo gum
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
608 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2002
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 6, 2016 · Synced Oct 30, 2026, 6:01 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Using Nicotine to Reverse Age-related Auditory Processing Deficits

NCT04971954
View directory record Official record
Conditions
Auditory Perceptual Impairment, Aging
Interventions
Nicotine gum, Placebo gum
Other
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 85 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
2
States / cities
Irvine, California • San Diego, California
Source: ClinicalTrials.gov public record
Updated Oct 19, 2026 · Synced Oct 30, 2026, 6:01 PM EDT
Withdrawn Not applicable Interventional

Caffeinated Gum to Prevent Post-Operative Ileus: A Prospective, Randomized, Placebo-controlled Trial

NCT02250924
View directory record Official record
Conditions
C.Surgical Procedure; Digestive System
Interventions
Caffeine, Gum, wear silicone bracelet
Dietary Supplement · Other · Behavioral
Lead sponsor
The Guthrie Clinic
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Sayre, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 4, 2020 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Green Tea Confection For Resolving Gut Permeability-Induced Metabolic Endotoxemia In Obese Adults

NCT03413735
View directory record Official record
Conditions
Obesity, Endotoxemia, Inflammation
Interventions
Green Tea Extract, Placebo
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 13, 2025 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Not applicable Interventional

Effects of L-Carnitine on Postprandial Clearance of Triglyceride-rich Lipoproteins in HIV Patients on HAART

NCT00386971
View directory record Official record
Conditions
Hyperlipidemia, HIV Infections
Interventions
L-carnitine, placebo
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 70 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Oct 30, 2026, 6:01 PM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Aromatherapy Randomization of Pain Management in Adults

NCT03377088
View directory record Official record
Conditions
Back Pain, Back Pain, Low, Sciatica
Interventions
Rose oil, Almond Oil
Other
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 110 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2024
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Feb 14, 2024 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Pharmacokinetics of an Extract of Naringenin

NCT03582553
View directory record Official record
Conditions
Safety Issues, Pharmacokinetics
Interventions
Naringenin, Placebo
Dietary Supplement · Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 18, 2020 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Phase 2 Interventional Results available

Sweet Preference and Alcohol Craving

NCT01296646
View directory record Official record
Conditions
Alcohol Dependence, Alcohol Abuse
Interventions
Naltrexone, Brenda Therapy Sessions, Placebo
Drug · Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 25, 2013 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Safety and Effectiveness of Sustained Release Bupropion in Treating Individuals With Schizophrenia Who Smoke

NCT00307203
View directory record Official record
Conditions
Tobacco-Use Disorder, Schizophrenia, Psychotic Disorders
Interventions
bupropion SR, Cognitive Behavioral Group Therapy, nicotine replacement therapy
Drug · Behavioral
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2004
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Dihydrocapsiate on Energy Expenditure in Women

NCT01773356
View directory record Official record
Conditions
Obesity
Interventions
Dihydrocapsiate
Dietary Supplement
Lead sponsor
Ellen Evans
Other
Eligibility
25 Years to 45 Years · Female only
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 25, 2015 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Phase 4 Interventional Results available

Combination Nicotine Replacement for Alcoholic Smokers

NCT00064844
View directory record Official record
Conditions
Smoking, Alcoholism
Interventions
Cognitive Behavior Therapy for alcohol and smoking cessation, Nicoderm CQ nicotine patch, Placebo gum, Nicotine gum - Nicorette®
Behavioral · Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
1
States / cities
Newington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 13, 2021 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Interactions of Human Gut Microbiota With Intestinal Sweet Taste Receptors

NCT03032640
View directory record Official record
Conditions
Obesity
Interventions
Oral Glucose Tolerance Test (OGTT), Assessment of dietary compliance, Stool sampling, Sodium Saccharin, Placebo, Lactisole
Other
Lead sponsor
AdventHealth Translational Research Institute
Other
Eligibility
18 Years to 45 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Oct 30, 2026, 6:01 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Treatment to Regress to Normoglycemia in Women with a Recent History of GDM

NCT04873050
View directory record Official record
Conditions
Pre Diabetes, Postpartum Disorder
Interventions
Semaglutide Pen Injector [Ozempic], Placebo semaglutide pen injector
Drug
Lead sponsor
Woman's
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 13, 2025 · Synced Oct 30, 2026, 6:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sweet Scents to Sweet Dreams

NCT06247696
View directory record Official record
Conditions
Sleep Disturbance, Mental Health Issue
Interventions
Herbal Pillows
Other
Lead sponsor
Duquesne University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Oct 30, 2026, 6:01 PM EDT