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ClinicalTrials.gov public records Last synced Oct 13, 2026, 7:11 PM EDT

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Showing 265–288 of 368 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Ascorbic acid (Vitamin C) Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Evaluating the Effects of Supplemental Vitamin C on Infant Lung Function in Pregnant Smoking Women

NCT00632476
View directory record Official record
Conditions
Pregnancy, Smoking
Interventions
Placebo, Vitamin C
Other · Dietary Supplement
Lead sponsor
Oregon Health and Science University
Other
Eligibility
15 Years and older · Female only
Enrollment
282 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 4, 2013 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Phase 2 Interventional Results available

Tetrahydrobiopterin in Patients With Chronic Kidney Disease (CKD) and Albuminuria

NCT00625820
View directory record Official record
Conditions
Kidney Disease, Albuminuria
Interventions
6R BH4, Vitamin C
Drug · Dietary Supplement
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 75 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Oct 13, 2026, 7:11 PM EDT
Recruiting Phase 1 Interventional

High-dose Ascorbate (HDA) in Combination With Standard of Care Azacitidine and Venetoclax in Acute Myeloid Leukemia (AML)

NCT07177079
View directory record Official record
Conditions
Acute Myeloid Leukemia
Interventions
Azacitidine, Venetoclax, High-dose ascorbate, Decitabine
Drug
Lead sponsor
Kittika Poonsombudlert
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Phase 2 Interventional Results available

Herbal Mouthrinse for Oral Mucositis Study

NCT01898091
View directory record Official record
Conditions
Oral Mucositis
Interventions
Neem Mouthrinse, Placebo Mouthrinse
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 89 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 6, 2017 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Phase 1 Interventional

High Dose Ascorbic Acid for Plasma Cell Disorders

NCT03602235
View directory record Official record
Conditions
Multiple Myeloma
Interventions
Ascorbate, Melphalan
Other · Drug
Lead sponsor
Christopher Strouse
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Oct 21, 2025 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Early Phase 1 Interventional Results available

Treatment of HFpEF With Nitrate Supplement

NCT03289481
View directory record Official record
Conditions
Heart Failure With Normal Ejection Fraction
Interventions
Active lozenge, Placebo
Dietary Supplement · Drug
Lead sponsor
MaineHealth
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Rockport, Maine
Source: ClinicalTrials.gov public record
Updated Oct 6, 2021 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Phase 2 Interventional Results available

Vitamin C & Thiamine to Treat Sepsis and Septic Shock

NCT03592277
View directory record Official record
Conditions
Sepsis, Septic Shock
Interventions
Vitamin C, Vitamin B1
Drug
Lead sponsor
Trinity Health Of New England
Other
Eligibility
18 Years to 90 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Assessment of Endogenous Oxalate Synthesis

NCT05229952
View directory record Official record
Conditions
Healthy, Kidney Stone, Obesity
Interventions
Low-oxalate controlled diet, Primed, continuous intravenous infusion of 13C2-oxalate
Dietary Supplement · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 75 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Oct 13, 2026, 7:11 PM EDT
Recruiting Phase 2 Interventional

Ascorbic Acid and Chemotherapy for the Treatment of Relapsed or Refractory Lymphoma, CCUS, and Chronic Myelomonocytic Leukemia

NCT03418038
View directory record Official record
Conditions
Clonal Cytopenia of Undetermined Significance, High Grade B-Cell Lymphoma With MYC and BCL2 or BCL6 Rearrangements, Recurrent Diffuse Large B-Cell Lymphoma, Recurrent Hodgkin Lymphoma, Recurrent Lymphoma, Refractory Diffuse Large B-Cell Lymphoma, Refractory Lymphoma, Chronic Myelomonocytic Leukemia
Interventions
Ascorbic Acid, Carboplatin, Cisplatin, Cytarabine, Dexamethasone, Etoposide, Gemcitabine Hydrochloride, Ifosfamide, Laboratory Biomarker Analysis, Oxaliplatin, Placebo Administration, Questionnaire Administration, Rituximab, Decitabine, Biospecimen Collection, Core Biopsy, Bone Marrow Aspiration, Bone Marrow Biopsy, Echocardiography, Positron Emission Tomography, Magnetic Resonance Imaging, Central Venous Cannula Insertion, Portacath Placement, Computed Tomography, Decitabine and Cedazuridine
Dietary Supplement · Drug · Other + 2 more
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2033
U.S. locations
4
States / cities
Mankato, Minnesota • Rochester, Minnesota • Eau Claire, Wisconsin + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 13, 2026, 7:11 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 13, 2026, 7:11 PM EDT
Completed Phase 2 Interventional Results available

A Phase 2 Trial of High-dose Ascorbate for Pancreatic Cancer (PACMAN 2.1)

NCT02905578
View directory record Official record
Conditions
Pancreatic Neoplasms, Cancer of Pancreas, Cancer of the Pancreas, Neoplasms, Pancreatic, Pancreas Cancer, Pancreas Neoplasms, Adenocarcinoma
Interventions
Gemcitabine, nab-paclitaxel, Pharmacological ascorbate
Drug
Lead sponsor
University of Iowa
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fatigue Reduction Diet

NCT01902745
View directory record Official record
Conditions
Chronic Fatigue
Interventions
Social Cognitive Theory
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 6, 2017 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Phase 1 Interventional

Study of High-Dose Intravenous (IV) Vitamin C Treatment in Patients With Solid Tumors

NCT00441207
View directory record Official record
Conditions
Cancer
Interventions
Ascorbic Acid
Drug
Lead sponsor
Midwestern Regional Medical Center
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Zion, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 23, 2013 · Synced Oct 13, 2026, 7:11 PM EDT
Terminated Phase 2 Interventional

L-Arginine and Antioxidant Vitamins During Pregnancy to Reduce Preeclampsia

NCT00469846
View directory record Official record
Conditions
Pre-Eclampsia
Interventions
L-arginine supplementation in a medical food, Vitamin C and E supplementation in a medical food
Procedure
Lead sponsor
Instituto Nacional de Perinatologia Isidro Espinosa de los Reyes
Government
Eligibility
19 Years to 32 Years · Female only
Enrollment
585 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 8, 2007 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Phase 2 Interventional Results available

A Phase 2, Pharmacokinetic (PK) Study of 6R-BH4 Alone or 6R-BH4 With Vitamin C in Subjects With Endothelial Dysfunction

NCT00532844
View directory record Official record
Conditions
Endothelial Dysfunction
Interventions
Sapropterin Dihydrochloride, Sapropterin Dihydrochloride and Vitamin C
Drug
Lead sponsor
BioMarin Pharmaceutical
Industry
Eligibility
18 Years to 75 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated May 17, 2021 · Synced Oct 13, 2026, 7:11 PM EDT
Terminated Phase 1 Interventional Results available

Clinical Utility of Endothelial Dysfunction in PAD

NCT00491751
View directory record Official record
Conditions
Peripheral Arterial Disease
Interventions
atorvastatin, ascorbic acid, Placebo
Drug
Lead sponsor
Boston University
Other
Eligibility
18 Years and older
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 27, 2018 · Synced Oct 13, 2026, 7:11 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 13, 2026, 7:11 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional Results available

Intravenous (IV) Vitamin C With Chemotherapy for Cisplatin Ineligible Bladder Cancer Patients

NCT04046094
View directory record Official record
Conditions
Bladder Cancer
Interventions
Ascorbic Acid
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
3
States / cities
Fairway, Kansas • Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 25, 2025 · Synced Oct 13, 2026, 7:11 PM EDT
Not listed Phase 1Phase 2 Interventional

Tolerability and Efficacy of RJX in Patients With COVID-19

NCT04708340
View directory record Official record
Conditions
COVID-19, Acute Respiratory Distress Syndrome, SARS-CoV-2, Hypoxemia
Interventions
Rejuveinix (RJX) Active Comparator, Placebo Comparator
Drug
Lead sponsor
Reven Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
237 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
3
States / cities
Houston, Texas • New Braunfels, Texas
Source: ClinicalTrials.gov public record
Updated Mar 15, 2022 · Synced Oct 13, 2026, 7:11 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 13, 2026, 7:11 PM EDT
Completed No phase listed Observational

Ascorbic Acid Levels in MDS, AML, and CMML Patients

NCT03526666
View directory record Official record
Conditions
Myelodysplastic Syndromes, Acute Myeloid Leukemia, Chronic Myelomonocytic Leukemia, MDS, AML, CMML
Interventions
Peripheral blood collection
Other
Lead sponsor
Van Andel Research Institute
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
2
States / cities
Grand Rapids, Michigan • Wyoming, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 3, 2019 · Synced Oct 13, 2026, 7:11 PM EDT
Withdrawn Not applicable Interventional

Effect of Ascorbic Acid Supplementation in Pregnancy on Anemia (AAA)

NCT03564756
View directory record Official record
Conditions
Anemia in Pregnancy
Interventions
Vitamin C
Dietary Supplement
Lead sponsor
Fetal Medicine Foundation
Other
Eligibility
18 Years to 50 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Dayton, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 22, 2022 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Not applicable Interventional

Impact of Maternal Pomegranate Juice on Brain Injury in Infants With Intrauterine Growth Restriction (IUGR)

NCT00788866
View directory record Official record
Conditions
Intrauterine Growth Restriction
Interventions
Pomegranate Juice, Placebo
Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
Female only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 17, 2014 · Synced Oct 13, 2026, 7:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Analysis of MicroBial Metabolites After Eating Refined Food

NCT04308473
View directory record Official record
Conditions
Dietary Habits
Interventions
Ultra-processed Food Meal, Whole Food Meal
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Oct 13, 2026, 7:11 PM EDT