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ClinicalTrials.gov public records Last synced Oct 18, 2026, 8:45 AM EDT

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Showing 169–192 of 4,731 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Placebo capsules Clear all
Completed Not applicable Interventional Results available

Prazosin Augmentation of Outpatient Treatment of Alcohol Use Disorders in Active Duty Soldiers With and Without PTSD

NCT02226367
View directory record Official record
Conditions
Alcohol Use Disorders, Stress Disorders, Posttraumatic, Combat Disorders
Interventions
prazosin hydrochloride, placebo
Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
21 Years and older
Enrollment
158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Feb 3, 2023 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Probiotic Intake on Intestinal Permeability in Healthy Adults

NCT03611400
View directory record Official record
Conditions
Intestinal Barrier Function
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 50 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 21, 2019 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase I Study of PH100 (Ecklonia Cava Phlorotannins)

NCT04335045
View directory record Official record
Conditions
Safety Issues
Interventions
Placebo, PH100 100mg, PH100 200mg, PH100 400mg, PH100 800mg, PH100 1200mg, PH100 1600mg
Drug
Lead sponsor
Phloronol Inc.
Industry
Eligibility
40 Years to 75 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Apr 6, 2020 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate Efficacy and Safety of Gepotidacin in the Treatment of Uncomplicated Urinary Tract Infection (UTI)

NCT04020341
View directory record Official record
Conditions
Urinary Tract Infections
Interventions
Gepotidacin, Placebo matching nitrofurantoin, Nitrofurantoin, Placebo matching gepotidacin
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older · Female only
Enrollment
1,531 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
41
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 36 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 4 Interventional Results available

Minocycline and Tobacco Craving in Smokers With Schizophrenia

NCT02968602
View directory record Official record
Conditions
Schizophrenia, Tobacco Use
Interventions
Minocycline, Placebo
Drug · Other
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 6, 2022 · Synced Oct 18, 2026, 8:45 AM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

Effects of an Immunosuppressant Mycophenolate Mofetil or MMF on the Urinary Sodium Excretion Response to Mental Stress

NCT02432339
View directory record Official record
Conditions
Psychological Stress, Hypertension, Renal
Interventions
mycophenolate mofetil (MMF), Placebo
Drug
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 50 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 20, 2019 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 3 Interventional

A Phase 3 STudy of CaPRe in LOwering Very hiGh TriglYcerides (TRILOGY 2)

NCT03361501
View directory record Official record
Conditions
Hypertriglyceridemia
Interventions
CaPre, Placebo
Drug
Lead sponsor
Grace Therapeutics Inc.
Industry
Eligibility
18 Years and older
Enrollment
278 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
53
States / cities
Birmingham, Alabama • Childersburg, Alabama • Encino, California + 44 more
Source: ClinicalTrials.gov public record
Updated Aug 12, 2020 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effect of Rosiglitazone on the Vascular Biology of Human Fat Tissue

NCT01150981
View directory record Official record
Conditions
Metabolic Syndrome, Insulin Resistance
Interventions
Rosiglitazone, Placebo
Drug
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years to 55 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 26, 2012 · Synced Oct 18, 2026, 8:45 AM EDT
Not yet recruiting Phase 2 Interventional

Inhibition of Aggressive Behavior in Participants With Fragile X Syndrome

NCT07328529
View directory record Official record
Conditions
Aggressive Behavior in Fragile X Syndome
Interventions
SRX246, Placebo
Drug
Lead sponsor
Azevan Pharmaceuticals
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
3
States / cities
Sacramento, California • Chicago, Illinois • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 9, 2026 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Effect Of Single-Dose PF-05175157 On Metabolic And Cardiopulmonary Parameters

NCT01819922
View directory record Official record
Conditions
Healthy
Interventions
PF-05175157, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 40 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 2, 2016 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 4 Interventional Results available

Paliperidone and Lithium in the Treatment of Suicidality - Treatment Indication and Epigenetic Regulation

NCT01134731
View directory record Official record
Conditions
Major Depressive Disorder, Suicidal Ideation
Interventions
paliperidone, lithium, Placebo
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 65 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 3, 2016 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Acute Effects of Organic Guayusa Extract

NCT05928195
View directory record Official record
Conditions
Acute Physiological Effects of Organic Guayusa Extract
Interventions
Acute Moderate-Dose Guayusa Extract Supplementation, Acute High-Dose Guayusa Extract Supplementation, Placebo
Dietary Supplement
Lead sponsor
Nathaniel Jenkins
Other
Eligibility
18 Years to 45 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 5, 2023 · Synced Oct 18, 2026, 8:45 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition: Substudy III

NCT02710331
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active Dronabinol, Placebo, Active Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 2 Interventional Results available

Supplements, Placebo, or Rosuvastatin Study

NCT04846231
View directory record Official record
Conditions
Hypercholesterolemia
Interventions
Fish Oil, Cinnamon, Garlique,Turmeric, Plant Sterol, Red Yeast Rice, Rosuvastatin, Placebo
Dietary Supplement · Drug · Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
40 Years to 75 Years
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 25, 2023 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 4 Interventional Results available

Mechanistic Evaluation of Glucose-lowering Strategies in Patients With Heart Failure

NCT02917031
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Heart Failure
Interventions
Saxagliptin, Sitagliptin, Placebo to match saxagliptin, Placebo to match sitagliptin
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
348 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
11
States / cities
Torrance, California • Upland, California • Miami, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Nov 8, 2021 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 3 Interventional

Phase 3 Evaluation of Efficacy and Safety of AR882 in Gout Patients (AR882-302)

NCT06439602
View directory record Official record
Conditions
Gout, Arthritis, Gouty, Hyperuricemia, Gout Chronic
Interventions
AR882 50 mg, AR882 75 mg, Placebo
Drug
Lead sponsor
Arthrosi Therapeutics
Industry
Eligibility
18 Years to 85 Years
Enrollment
818 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
52
States / cities
Foley, Alabama • Anchorage, Alaska • Peoria, Arizona + 47 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Prometa Protocol for Alcohol Dependence

NCT00262639
View directory record Official record
Conditions
Alcohol Dependence
Interventions
Flumazenil and Gabapentin, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 15, 2019 · Synced Oct 18, 2026, 8:45 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

IC PaIN Trial: Interstitial Cystitis Pain Improvement With Naltrexone

NCT04313972
View directory record Official record
Conditions
Interstitial Cystitis, Painful Bladder Syndrome, Bladder Pain Syndrome, Low Dose Naltrexone, Low-dose Naltrexone, Naltrexone
Interventions
low-dose naltrexone, Placebo oral tablet
Drug
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years to 110 Years · Female only
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Skokie, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 7, 2025 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study Comparing the Efficacy of Two Ibuprofen Formulations

NCT00740857
View directory record Official record
Conditions
Pain
Interventions
placebo, ibuprofen Formulation 1, ibuprofen Formulation 2
Drug
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
16 Years to 40 Years
Enrollment
211 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 6, 2011 · Synced Oct 18, 2026, 8:45 AM EDT
Terminated Phase 4 Interventional Results available

Prazosin and Cerebrospinal Fluid (CSF) Biomarkers in Mild Traumatic Brain Injury (mTBI)

NCT03221751
View directory record Official record
Conditions
Dementia
Interventions
prazosin hydrochloride, placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
21 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 26, 2024 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 3 Interventional Results available

Comparison of Tiotropium in the HandiHaler Versus the Respimat in Chronic Obstructive Pulmonary Disease

NCT01126437
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
tiotropium 18 mcg, tiotropium 1.25 mcg (2 actuations/day), tiotropium 2.5 mcg (2 actuations/day)
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
40 Years and older
Enrollment
17,183 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
303
States / cities
Athens, Alabama • Birmingham, Alabama • Florence, Alabama + 243 more
Source: ClinicalTrials.gov public record
Updated Jun 20, 2014 · Synced Oct 18, 2026, 8:45 AM EDT
Active, not recruiting Phase 2 Interventional

Clinical Trial Evaluating the Efficacy and Safety of AGB101 for Treatment of Parkinson's Disease Related Psychosis

NCT05824728
View directory record Official record
Conditions
Parkinson Disease Psychosis
Interventions
AGB101
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
40 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 3 Interventional

A Study of Tasquinimod in Men With Metastatic Castrate Resistant Prostate Cancer

NCT01234311
View directory record Official record
Conditions
Prostate Cancer
Interventions
tasquinimod, Placebo
Drug
Lead sponsor
Active Biotech AB
Industry
Eligibility
18 Years and older · Male only
Enrollment
1,245 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
34
States / cities
Tucson, Arizona • Oxnard, California • Santa Monica, California + 31 more
Source: ClinicalTrials.gov public record
Updated Oct 21, 2015 · Synced Oct 18, 2026, 8:45 AM EDT
Completed Phase 2Phase 3 Interventional Results available

26 Week Efficacy, Safety and Tolerability Study of Indacaterol in Patients With Chronic Obstructive Pulmonary Disease (COPD)

NCT00463567
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive, COPD, Lung Diseases, Obstructive
Interventions
Indacaterol, Formoterol (12 µg b.i.d.), Tiotropium (18 µg o.d.), Placebo to Indacaterol, Placebo to Formoterol
Drug
Lead sponsor
Novartis
Industry
Eligibility
40 Years and older
Enrollment
2,059 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
221
States / cities
Anniston, Alabama • Birmingham, Alabama • Homewood, Alabama + 163 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2011 · Synced Oct 18, 2026, 8:45 AM EDT