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Showing 1–24 of 205 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo Instructions Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Heart Rate Variability Biofeedback: It's Role in Asthma Therapeutics

NCT02766374
View directory record Official record
Conditions
Asthma
Interventions
Heart rate variability biofeedback, Placebo
Behavioral
Lead sponsor
Fred Wamboldt, MD
Other
Eligibility
18 Years to 75 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2018
U.S. locations
2
States / cities
Denver, Colorado • Piscataway, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 14, 2019 · Synced Sep 1, 2026, 10:28 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Brain and Genetic Predictors of Individual Differences in Pain and Analgesia

NCT03781570
View directory record Official record
Conditions
Pain, Acute
Interventions
Placebo Cream, Control Cream
Behavioral
Lead sponsor
Trustees of Dartmouth College
Other
Eligibility
18 Years to 55 Years
Enrollment
541 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 3, 2025 · Synced Sep 1, 2026, 10:28 PM EDT
Completed Phase 2 Interventional Results available

Inhaled Mometasone to Reduce Painful Episodes in Patients With Sickle Cell Disease

NCT02061202
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Mometasone Furoate, Placebo
Drug
Lead sponsor
Jeffrey Glassberg
Other
Eligibility
15 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 10, 2019 · Synced Sep 1, 2026, 10:28 PM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Etripamil for the Termination of Spontaneous Paroxysmal Supraventricular Tachycardia (PSVT).

NCT03464019
View directory record Official record
Conditions
Paroxysmal Supraventricular Tachycardia
Interventions
Etripamil, Placebo, Etripamil Test Dose
Drug
Lead sponsor
Milestone Pharmaceuticals Inc.
Other
Eligibility
18 Years and older
Enrollment
1,097 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
54
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Cerritos, California + 44 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Sep 1, 2026, 10:28 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Brain Imaging and Pain: Analysis of Placebo Analgesia

NCT01409538
View directory record Official record
Conditions
Brain Imaging of Placebo Analgesia
Interventions
Placebo Instructions, Control condition
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 19, 2015 · Synced Sep 1, 2026, 10:28 PM EDT
Completed Phase 4 Interventional Results available

Study to Validate the Instructions for Use of TOBI® Podhaler™ in Cystic Fibrosis Patients

NCT02178540
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Placebo, Tobi Podhaler
Drug · Device
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
6 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
13
States / cities
Phoenix, Arizona • Long Beach, California • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 22, 2016 · Synced Sep 1, 2026, 10:28 PM EDT
Completed Phase 3 Interventional Results available

A Study of the Safety and Efficacy of Two Doses of Naltrexone SR/Bupropion SR and Placebo in Overweight and Obese Subjects

NCT00532779
View directory record Official record
Conditions
Obesity, Overweight
Interventions
Naltrexone SR 16 mg/Bupropion SR 360 mg /day, Naltrexone SR 32 mg/Bupropion SR 360 mg /day, Placebo, Ancillary therapy
Drug · Behavioral
Lead sponsor
Orexigen Therapeutics, Inc
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,742 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
34
States / cities
Birmingham, Alabama • Fairhope, Alabama • Chandler, Arizona + 28 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2014 · Synced Sep 1, 2026, 10:28 PM EDT
Completed Phase 2 Interventional Results available

Metabolic Resuscitation Using Ascorbic Acid, Thiamine, and Glucocorticoids in Sepsis.

NCT03422159
View directory record Official record
Conditions
Sepsis, Severe, Septic Shock
Interventions
Ascorbic Acid, Thiamine, Hydrocortisone, Sodium Chloride 0.9%
Drug
Lead sponsor
Community Medical Center, Toms River, NJ
Other
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
2
States / cities
Lakewood, New Jersey • Toms River, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 20, 2021 · Synced Sep 1, 2026, 10:28 PM EDT
Recruiting Phase 1Phase 2 Interventional

Protective Effects of the Nutritional Supplement Sulforaphane on Doxorubicin-Associated Cardiac Dysfunction

NCT03934905
View directory record Official record
Conditions
Anthracycline Related Cardiotoxicity in Breast Cancer
Interventions
sulforaphane, Placebo Oral Tablet
Drug
Lead sponsor
Texas Tech University Health Sciences Center
Other
Eligibility
18 Years to 89 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Jun 28, 2026 · Synced Sep 1, 2026, 10:28 PM EDT
Completed Not applicable Interventional

Functional Chewing Gum in Reduction of Gingival Inflammation

NCT03237624
View directory record Official record
Conditions
Gingivitis
Interventions
Functional Chitosan Chewing Gum, Control Chewing Gum, Oral hygiene measures
Device · Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 25, 2024 · Synced Sep 1, 2026, 10:28 PM EDT
Not listed Not applicable Interventional

Curcumin in Management of Chronic Obstructive Pulmonary Disease

NCT04687449
View directory record Official record
Conditions
COPD
Interventions
Curcumin therapy, Placebo, Standard care
Dietary Supplement · Other
Lead sponsor
Danbury Hospital
Other
Eligibility
40 Years to 89 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Danbury, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 8, 2021 · Synced Sep 1, 2026, 10:28 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

A Pilot Clinical Evaluation of Astepro® Nasal Spray for Management of Early SARS-CoV-2 Infection

NCT06008860
View directory record Official record
Conditions
COVID-19
Interventions
Experimental: Primary Cohort, Placebo Comparator: Primary Cohort - Placebo
Drug · Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 1, 2026, 10:28 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

The Effects of a Nitrate Supplementation on Erectile Function

NCT06213077
View directory record Official record
Conditions
Erectile Dysfunction
Interventions
Nitric Oxide, Tadalafil, Placebo
Dietary Supplement · Drug · Other
Lead sponsor
RHA Investments Ltd
Industry
Eligibility
40 Years to 65 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 18, 2024 · Synced Sep 1, 2026, 10:28 PM EDT
Recruiting Early Phase 1 Interventional

Type 2 Diabetes and Blood Brain Barrier Improvement

NCT06322212
View directory record Official record
Conditions
Type2diabetes
Interventions
Thiamine, Placebo
Dietary Supplement · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
40 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 1, 2026, 10:28 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

A Randomized, Placebo Controlled Clinical Study to Assess the Effect of a Blend of Digestive Enzymes and Extracts on Bloating in Adults.

NCT07033000
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Dietary Supplement with actives
Dietary Supplement
Lead sponsor
Olly, PBC
Industry
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
New Port Richey, Florida
Source: ClinicalTrials.gov public record
Updated Jun 23, 2025 · Synced Sep 1, 2026, 10:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

An Evaluation of the Efficacy of Oral-B New Product Sensi-Stop on Dentinal Hypersensitivity

NCT02476032
View directory record Official record
Conditions
Tooth Sensitivity
Interventions
Prof applied oxalate, Self applied oxalate, Prof applied placebo
Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 22, 2017 · Synced Sep 1, 2026, 10:28 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Effects of Oral Tranexamic Acid Following Total Knee Arthroplasty

NCT06479161
View directory record Official record
Conditions
Postoperative Pain
Interventions
Tranexamic acid
Drug
Lead sponsor
Matthew Grosso, MD
Other
Eligibility
18 Years to 89 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Sep 1, 2026, 10:28 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Effects of an Acute Dose of a Betalain-rich Concentrate on Repeated-sprint Cycling Performance and Recovery.

NCT06274385
View directory record Official record
Conditions
Nutraceuticals
Interventions
Betalain-rich concentrate (AltRed), Placebo
Dietary Supplement · Other
Lead sponsor
Drexel University
Other
Eligibility
18 Years to 40 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 21, 2024 · Synced Sep 1, 2026, 10:28 PM EDT
Not yet recruiting Phase 2 Interventional

Use of N-Acetylcysteine in the Treatment of Repetitive and Self-Injurious Behaviors in Cornelia de Lange Syndrome

NCT04381897
View directory record Official record
Conditions
Cornelia de Lange Syndrome
Interventions
N-acetyl cysteine, Placebo
Drug · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
13 Years to 35 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 1, 2026, 10:28 PM EDT
Terminated Phase 4 Interventional Results available

Pioglitazone to Reduce Sympathetic Overactivity in CKD Patients

NCT03471117
View directory record Official record
Conditions
Chronic Kidney Diseases
Interventions
Pioglitazone, Placebo
Drug · Other
Lead sponsor
The University of Texas at Arlington
Other
Eligibility
35 Years to 70 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
Arlington, Texas • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 1, 2026, 10:28 PM EDT
Withdrawn Phase 4 Interventional

CBD for Pain Reduction and Opioid Use After Ankle and Tibia Fracture ORIF

NCT04768478
View directory record Official record
Conditions
Ankle Fractures, Tibia Fracture
Interventions
CBD, Placebo
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 27, 2022 · Synced Sep 1, 2026, 10:28 PM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Phentermine/Topiramate as Preventive Pharmacotherapy for Obesity

NCT05834062
View directory record Official record
Conditions
Obesity, Adolescent
Interventions
Qsymia and lifestyle management therapy, Placebo and lifestyle management therapy
Drug · Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
16 Years to 22 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 25, 2023 · Synced Sep 1, 2026, 10:28 PM EDT
Withdrawn Phase 3 Interventional

Clevidipine vs Placebo or Standard of Care for Dyspnea and Blood Pressure Control in AHF

NCT04592380
View directory record Official record
Conditions
Dyspnea, Hypertension, Acute Heart Failure
Interventions
Stage 1: Clevidipine (double-blinded), Stage 1: Placebo (double-blinded), Stage 2: Clevidipine (open-label), Stage 2: Standard of Care (open-label)
Drug
Lead sponsor
The Medicines Company
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
9
States / cities
Montgomery, Alabama • Tucson, Arizona • St Louis, Missouri + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 18, 2020 · Synced Sep 1, 2026, 10:28 PM EDT
Completed Not applicable Interventional

Effectiveness Study of a Computer-Based Colorectal Cancer Screening Decision Aid

NCT00558233
View directory record Official record
Conditions
Colorectal Cancer, Health Literacy
Interventions
CHOICE decision aid, YourMeds patient education program
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
50 Years to 75 Years
Enrollment
264 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 8, 2018 · Synced Sep 1, 2026, 10:28 PM EDT