Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 10, 2026, 1:02 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 367 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Ascorbic acid (Vitamin C) Clear all
Completed Phase 1 Interventional

Use of ARINA-1 in an Intermediate Size Patient Population of Bilateral Lung Transplant Patients With CLAD Grade 0

NCT03226431
View directory record Official record
Conditions
Lung Transplant
Interventions
Ascorbic Acid
Drug
Lead sponsor
Duke University
Other
Eligibility
21 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 5, 2019 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 4 Interventional Results available

Study of High Dose Vitamin C On Outcome in Cardiac Surgery Patients

NCT01167569
View directory record Official record
Conditions
Reperfusion Injury
Interventions
Ascorbic Acid, 5 % Dextrose Water or Normal Saline
Drug · Other
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Oct 19, 2020 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Vitamin C on Iron Absorption

NCT00570895
View directory record Official record
Conditions
Iron Deficiency
Interventions
Vitamin C
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
4 Years to 8 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 26, 2020 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Early Phase 1 Interventional

Exercise and NO in HFrEF

NCT03136029
View directory record Official record
Conditions
Heart Failure With Reduced Ejection Fraction
Interventions
Antioxidant, Tetrahydrobiopterin (BH4), Exercise training
Dietary Supplement · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Oct 10, 2026, 1:02 PM EDT
Terminated Phase 4 Interventional Results available

The Relationship of Hemoglobin A1c and Diabetic Wound Healing

NCT01350102
View directory record Official record
Conditions
Diabetes, Type 1, Diabetes, Type 2, Foot Ulcer, Diabetic
Interventions
Bacitracin, AmeriGel®, Vitamin C
Drug · Dietary Supplement
Lead sponsor
Susan Hassenbein
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 12, 2017 · Synced Oct 10, 2026, 1:02 PM EDT
Withdrawn Phase 2 Interventional

Melphalan, Arsenic Trioxide, and Ascorbic Acid in Treating Patients With Relapsed or Refractory Multiple Myeloma

NCT00085345
View directory record Official record
Conditions
Stage II Multiple Myeloma, Stage III Multiple Myeloma, Refractory Plasma Cell Neoplasm
Interventions
arsenic trioxide, ascorbic acid, melphalan, chemosensitization/potentiation, chemotherapy
Drug · Procedure
Lead sponsor
Oncotherapeutics
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
19
States / cities
Glendale, Arizona • Bakersfield, California • Campbell, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jul 10, 2013 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 2 Interventional Results available

SAFEty Study of Early Infusion of Vitamin C for Treatment of Novel Coronavirus Acute Lung Injury (SAFE EVICT CORONA-ALI)

NCT04344184
View directory record Official record
Conditions
COVID-19, Lung Injury, Acute, Kidney Injury
Interventions
L-ascorbic acid, Placebo
Drug · Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 4, 2024 · Synced Oct 10, 2026, 1:02 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Phenylalanine Elevations on Brain and Cognition in Adult PKU Carriers

NCT07220265
View directory record Official record
Conditions
Carrier of Phenylketonuria, Healthy
Interventions
Phenylalanine (Phe), Placebo
Dietary Supplement
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 60 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 1 Interventional

Low Antioxidant Diet in Controlling Cachexia in Patients With Oropharyngeal Cancer Receiving Chemotherapy and Radiation Therapy

NCT00486304
View directory record Official record
Conditions
Cachexia, Head and Neck Cancer, Weight Changes
Interventions
ADD, Placebo
Other
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 18, 2012 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 1 Interventional

The Role of Vitamins E and C in Maintaining Lung Health in People With Asthma

NCT00142610
View directory record Official record
Conditions
Asthma
Interventions
Vitamin
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 50 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 4, 2013 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Not applicable Interventional

Literacy and Language Interventions Via Telepractice for School-Age Children

NCT03878641
View directory record Official record
Conditions
Literacy-language Intervention
Interventions
Children in Grade 1 to 5 with literacy and language needs
Behavioral
Lead sponsor
Vanderbilt University
Other
Eligibility
6 Years to 11 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 6, 2020 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 1 Interventional

Anti-Oxidant Treatment of Alzheimer's Disease

NCT00117403
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Vitamin E, Vitamin C, and Alpha-lipoic Acid, Coenzyme Q, Placebo capsules, Placebo wafers
Drug
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
60 Years to 85 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
13
States / cities
Tucson, Arizona • Irvine, California • La Jolla, California + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2009 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 1 Interventional Results available

Beneficial Effects of Quercetin in Chronic Obstructive Pulmonary Disease (COPD)

NCT01708278
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Quercetin, Placebo - sugar chew
Drug · Other
Lead sponsor
University of Michigan
Other
Eligibility
40 Years to 80 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 26, 2016 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Nitric Oxide Supplementation Product on Endothelial Dysfunction and Prehypertensive Adults

NCT03895749
View directory record Official record
Conditions
Hypertension
Interventions
NEO40 Daily
Dietary Supplement
Lead sponsor
Hypertension Institute, Nashville
Other
Eligibility
18 Years to 75 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 30, 2019 · Synced Oct 10, 2026, 1:02 PM EDT
Terminated Phase 2 Interventional Results available

Effect of Antioxidant Vitamins on Coagulopathy and Nosocomial Pneumonia After Severe Trauma

NCT01897792
View directory record Official record
Conditions
Coagulopathy, Nosocomial Pneumonia
Interventions
Vitamin C, Vitamin E, Saline (for Vitamin C), Placebo (for Vitamin E)
Dietary Supplement · Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 29, 2017 · Synced Oct 10, 2026, 1:02 PM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers

Targeting ER Stress in Vascular Dysfunction

NCT04001647
View directory record Official record
Conditions
Vasodilation, Arterial Stiffness
Interventions
Acetylcholine, Sodium Nitroprusside, Ascorbic Acid
Drug
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 80 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 8, 2025 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study of Hydroxychloroquine, Vitamin C, Vitamin D, and Zinc for the Prevention of COVID-19 Infection

NCT04335084
View directory record Official record
Conditions
COVID-19, Coronavirus Infection, Sars-CoV2, Corona Virus Infection, COVID, Coronavirus, Coronavirus-19, Coronavirus 19
Interventions
Hydroxychloroquine, Vitamin C, Vitamin D, Zinc
Drug · Dietary Supplement
Lead sponsor
ProgenaBiome
Other
Eligibility
18 Years and older
Enrollment
254 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Oct 10, 2026, 1:02 PM EDT
Withdrawn Phase 2 Interventional

Study of High Dose Intravenous (IV) Ascorbic Acid in Measurable Solid Tumor Disease

NCT01125449
View directory record Official record
Conditions
Sarcoma, Adenocarcinoma, Carcinoma, Multiple Myeloma, Desmoplastic Small Round Cell Tumor
Interventions
Ascorbic acid (vitamin C)
Drug
Lead sponsor
Situs Cancer Research Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Rogers, Arkansas
Source: ClinicalTrials.gov public record
Updated May 18, 2025 · Synced Oct 10, 2026, 1:02 PM EDT
Withdrawn Phase 1Phase 2 Interventional

High Dose Ascorbic Acid and Nanoparticle Paclitaxel Protein Bound and Cisplatin and Gemcitabine (AA NABPLAGEM) in Patients Who Have Metastatic Pancreatic Cancer

NCT03908333
View directory record Official record
Conditions
Metastatic Pancreatic Cancer, Pancreatic Cancer, Pancreas Cancer, Pancreatic Adenocarcinoma Resectable, Pancreatic Ductal Adenocarcinoma, Pancreatic Metastasis
Interventions
Ascorbic Acid, Paclitaxel protein-bound, Cisplatin, Gemcitabine
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
6
States / cities
Scottsdale, Arizona • San Diego, California • Atlanta, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated May 30, 2019 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 1 Interventional

Intravenous Vitamin C in Combination With Standard Chemotherapy for Pancreatic Cancer

NCT00954525
View directory record Official record
Conditions
Metastatic Pancreatic Cancer
Interventions
Gemcitabine and Erlotinib, Intravenous Vitamin C
Drug · Dietary Supplement
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
Other
Eligibility
18 Years to 75 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 2, 2025 · Synced Oct 10, 2026, 1:02 PM EDT
Terminated Phase 2 Interventional Results available

Docetaxel With or Without Ascorbic Acid in Treating Patients With Metastatic Prostate Cancer

NCT02516670
View directory record Official record
Conditions
Hormone-Resistant Prostate Cancer, Metastatic Prostate Carcinoma, Stage IV Prostate Cancer
Interventions
Ascorbic Acid, Docetaxel, Laboratory Biomarker Analysis, Pharmacological Study, Placebo, Quality-of-Life Assessment
Dietary Supplement · Drug · Other
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
6
States / cities
Washington D.C., District of Columbia • Annapolis, Maryland • Baltimore, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2023 · Synced Oct 10, 2026, 1:02 PM EDT
Recruiting No phase listed Observational

Testosterone Deficiency and Endothelial Dysfunction After Spinal Cord Injury

NCT07227740
View directory record Official record
Conditions
Spinal Cord Injuries, Endothelial Dysfunction, Testosterone Deficiency
Interventions
Intra-arterial Infusion of Vasoactive Agents, Intra-arterial Vitamin C Infusion, Blood Sampling
Diagnostic Test
Lead sponsor
Craig Hospital
Other
Eligibility
18 Years to 89 Years · Male only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Englewood, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 21, 2025 · Synced Oct 10, 2026, 1:02 PM EDT
Terminated Not applicable Interventional

Soy Modulation of Immune Activation, LDL- Levels, and Lowering Inflammation by Pretzel Isoflavone Dietary Intervention

NCT02818283
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV) Infection, Hypercholesterolemia
Interventions
Soy Pretzel, Wheat Pretzel
Dietary Supplement · Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 6, 2023 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Inorganic Nitrate Supplement on Blood Pressure

NCT03909789
View directory record Official record
Conditions
Blood Pressure, Endothelial Dysfunction
Interventions
Plant based bioequivalent Nitrate supplementation, Placebo
Dietary Supplement
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
40 Years to 75 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Apr 12, 2019 · Synced Oct 10, 2026, 1:02 PM EDT