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Showing 1–24 of 142 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo (US) Clear all
Not listed Phase 1Phase 2 Interventional

Metformin in Patients With Fragile X

NCT04141163
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
Metformin, Placebo oral tablet
Drug
Lead sponsor
Rowan University
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Stratford, New Jersey
Source: ClinicalTrials.gov public record
Updated Oct 30, 2019 · Synced Sep 10, 2026, 4:12 AM EDT
Recruiting Phase 3 Interventional

A Study to Evaluate Efficacy of Remibrutinib Compared to Dupilumab at Early Timepoints in Adults With Chronic Spontaneous Urticaria Inadequately Controlled by Second Generation H1-antihistamines

NCT06868212
View directory record Official record
Conditions
Chronic Spontaneous Urticaria (CSU)
Interventions
Remibrutinib, Remibrutinib matching placebo, Dupilumab, Placebo solution for injection
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
132
States / cities
Birmingham, Alabama • Litchfield Park, Arizona • Payson, Arizona + 104 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 10, 2026, 4:12 AM EDT
Terminated Phase 3 Interventional Results available

Filgotinib in Long-Term Extension Study of Adults With Crohn's Disease

NCT02914600
View directory record Official record
Conditions
Crohn's Disease
Interventions
Filgotinib, Placebo
Drug
Lead sponsor
Lakefront Biotherapeutics NV
Industry
Eligibility
18 Years and older
Enrollment
1,188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
100
States / cities
Dothan, Alabama • Sun City, Arizona • Coronado, California + 80 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2024 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety, Tolerability and Efficacy of PfSPZ Vaccine Against Heterologous CHMI in US Malaria naïve Adults

NCT04966871
View directory record Official record
Conditions
Malaria
Interventions
PfSPZ Vaccine, PfSPZ Challenge (7G8) for CHMI, Normal Saline
Biological · Other
Lead sponsor
Sanaria Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 17, 2022 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 2 Interventional

A 12-Week Study of Topical Pirenzepine or Placebo in Type 2 Diabetic Patients (T2DM) With Painful Peripheral Neuropathy

NCT04786340
View directory record Official record
Conditions
Painful Diabetic Neuropathy, Diabetes Mellitus
Interventions
Active: WST-057 4mL (146 mg pirenzepine free base monohydrate) topical solution, Placebo: WST-057 4mL topical solution
Drug
Lead sponsor
WinSanTor, Inc
Industry
Eligibility
18 Years to 75 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 17, 2023 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ranger Resilience and Improved Performance on Phospholipid Bound Omega-3's

NCT02908932
View directory record Official record
Conditions
Nutrition, Fatty Acids, Omega-3, Cognition, Resilience, Psychological, Psychology, Military
Interventions
Phospholipid-bound omega-3 supplement, Placebo supplement
Dietary Supplement
Lead sponsor
Medical University of South Carolina
Other
Eligibility
Not listed
Enrollment
555 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
3
States / cities
Fort Benning, Georgia • Bethesda, Maryland • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 4, 2018 · Synced Sep 10, 2026, 4:12 AM EDT
Not listed Phase 2 Interventional

Study to Evaluate R2R01 Plus Terlipressin Versus Terlipressin Alone in Patients With Hepatorenal Syndrome

NCT05875948
View directory record Official record
Conditions
Hepatorenal Syndrome, Acute Kidney Injury
Interventions
R2R01, Terlipressin
Drug
Lead sponsor
River 2 Renal Corp.
Industry
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
7
States / cities
San Francisco, California • Atlanta, Georgia • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2023 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 2 Interventional

A Study of Response-Guided Duration of Combination Therapy With GS-9451, Pegasys® and Copegus® With and Without Tegobuvir (GS-9190) in Previously Untreated Subjects With Genotype 1 Chronic Hepatitis C

NCT01271790
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Tegobuvir (GS-9190), GS-9451, Pegasys®, Copegus®, Tegobuvir placebo, GS-9451 placebo
Drug · Biological
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 70 Years
Enrollment
245 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
85
States / cities
Dothan, Alabama • Montgomery, Alabama • Phoenix, Arizona + 62 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2014 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 1 Interventional

This is a Study to Determine the Effect of Multiple Doses of an Investigational Drug, Taken by Mouth, in People With Narcolepsy-cataplexy. Accepting Both Males and Females Ages of 18 Years to 55 Years. This Study Will be Conducted in the US and Will Require Approximately 13 Weeks Participation.

NCT05015673
View directory record Official record
Conditions
Narcolepsy
Interventions
SEP363856, Placebo
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
6
States / cities
Orange, California • St. Petersburg, Florida • Atlanta, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 1Phase 2 Interventional

IVIG - West Nile Encephalitis: Safety and Efficacy

NCT00068055
View directory record Official record
Conditions
West Nile Virus
Interventions
Omr-lgG-am, Polygam® S/D, Placebo
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
66
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 55 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2011 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 3 Interventional

Prevention of Recurrent Aphthous Stomatitis Using Vitamins

NCT00527306
View directory record Official record
Conditions
Aphthous Stomatitis
Interventions
multivitamin
Dietary Supplement
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 26, 2020 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Study of Varying Injection Schedules of TDENV-PIV Vaccine With AS03B Adjuvant and Placebo in Healthy US Adults

NCT02421367
View directory record Official record
Conditions
Dengue
Interventions
TDENV-PIV with AS03B adjuvant. Placebo: 0.9% Sodium Chloride Solution.
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
20 Years to 49 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
2
States / cities
Baltimore, Maryland • Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 24, 2019 · Synced Sep 10, 2026, 4:12 AM EDT
Not listed Phase 4 Interventional

Safety and Efficacy of the Novel Selective Nicotinic Receptor Partial Agonist, CHANTIX (Varenicline) in Patients With Acute Coronary Syndrome

NCT01170338
View directory record Official record
Conditions
Smoking, Acute Coronary Syndrome
Interventions
Varenicline 100 mg by mouth twice daily, control
Drug
Lead sponsor
Newark Beth Israel Medical Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2008
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 26, 2010 · Synced Sep 10, 2026, 4:12 AM EDT
Terminated Phase 2 Interventional Results available

Saroglitazar Magnesium 4 mg for Nonalcoholic Fatty Liver Disease (NAFLD) in People Living With HIV in the US

NCT05211284
View directory record Official record
Conditions
Nonalcoholic Fatty Liver Disease
Interventions
Saroglitazar Magnesium 4 mg, Placebo
Drug
Lead sponsor
Zydus Therapeutics Inc.
Industry
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
8
States / cities
Birmingham, Alabama • La Jolla, California • San Francisco, California + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2025 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 3 Interventional

Subject Information and Consent Form F1J-US-HMCB Duloxetine Once-Daily Dosing Versus Placebo in Patients With Major Depression and Pain

NCT00036335
View directory record Official record
Conditions
Depression, Pain
Interventions
Duloxetine Hydrochloride
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
286 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
25
States / cities
Peoria, Arizona • Burbank, California • Fresno, California + 22 more
Source: ClinicalTrials.gov public record
Updated Jul 18, 2006 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study of Menactra® in US Adolescents When Administered Concomitantly With Tdap Vaccine

NCT00777257
View directory record Official record
Conditions
Meningitis, Meningococcemia, Pertussis, Tetanus, Diphtheria
Interventions
T dap + Meningococcal Polysaccharide Diphtheria Toxoid Conj., Tdap + Meningococcal Polysaccharide Diphtheria Toxoid Conj., Meningococcal Polysaccharide Diphtheria Toxoid Conj. + T dap
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
11 Years to 17 Years
Enrollment
1,345 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
20
States / cities
Jonesboro, Arkansas • Little Rock, Arkansas • Boulder, Colorado + 17 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2014 · Synced Sep 10, 2026, 4:12 AM EDT
Recruiting Not applicable Interventional

Treatment Validation for Myofascial Pain

NCT07133139
View directory record Official record
Conditions
Chronic Low-back Pain (cLBP), Myofacial Pain
Interventions
Dry Needling, Sham Dry Needling, NUN Biomarker
Device · Other
Lead sponsor
Ajay Wasan, MD, Msc
Other
Eligibility
20 Years to 70 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 23, 2025 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bovine Milk Oligosaccharide Study

NCT01814540
View directory record Official record
Conditions
Healthy
Interventions
Bovine Milk Oligosaccharide, Placebo Glucose Polymer
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 40 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2021
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Blood Flow Restriction With and Without Arginine on Physical Performance and Growth Hormone

NCT04079010
View directory record Official record
Conditions
Blood Flow Restriction, Growth Hormone, Strength Outcomes, Arginine
Interventions
BFR, Arginine, Placebo Pill
Procedure · Dietary Supplement
Lead sponsor
University of Mary Hardin-Baylor
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Belton, Texas
Source: ClinicalTrials.gov public record
Updated Apr 1, 2020 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 3 Interventional

Phase III/Seroquel SR Bipolar Depression Monotherapy - US

NCT00422214
View directory record Official record
Conditions
Affective Psychosis, Bipolar, Depression, Bipolar, Manic-Depressive Psychosis, Psychoses, Manic-Depressive
Interventions
Quetiapine fumarate (Seroquel) SR
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 65 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
54
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 51 more
Source: ClinicalTrials.gov public record
Updated Mar 24, 2009 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Treatment of Chronic Pain With Cannabidiol (CBD) and Delta-9-tetrahydrocannabinol (THC)

NCT03215940
View directory record Official record
Conditions
Chronic Pain, Widespread
Interventions
Delta-9-Tetrahydrocannabinol, Cannabidiol, Placebos
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 50 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 12, 2025 · Synced Sep 10, 2026, 4:12 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers Results available

Study of Lenacapavir for HIV Pre-Exposure Prophylaxis in People Who Are at Risk for HIV Infection

NCT04925752
View directory record Official record
Conditions
Pre-Exposure Prophylaxis of HIV Infection
Interventions
Oral Lenacapavir (LEN), F/TDF, Sub-cutaneous (SC) Lenacapavir (LEN), Placebo SC LEN, PTM F/TDF, PTM Oral LEN, F/TAF (for US participants only)
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
16 Years and older
Enrollment
3,292 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
60
States / cities
Birmingham, Alabama • Loma Linda, California • Los Angeles, California + 43 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 4 Interventional Results available

Sugammadex as Rescue Therapy

NCT05661409
View directory record Official record
Conditions
Neuromuscular Blockade
Interventions
Sugammadex, Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Sep 10, 2026, 4:12 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Safety Study Of The Caya® Diaphragm Used With ContraGel®

NCT02462954
View directory record Official record
Conditions
Contraception
Interventions
ContraGel, HEC Universal Placebo gel
Device
Lead sponsor
CONRAD
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated May 26, 2016 · Synced Sep 10, 2026, 4:12 AM EDT