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ClinicalTrials.gov public records Last synced Oct 17, 2026, 9:54 AM EDT

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

Showing 1–24 of 41 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Pharmacological ascorbate Clear all
Active, not recruiting Phase 1 Interventional Results available

A Safety Study of Pharmacologic Ascorbate and Ferumoxytol in Addition to Standard of Care Chemoradiation in Glioblastoma

NCT04900792
View directory record Official record
Conditions
Glioblastoma, Glioblastoma Multiforme
Interventions
Ferumoxytol injection, Pharmacological ascorbate, External beam radiation therapy, Temozolomide
Drug · Radiation
Lead sponsor
Bryan Allen
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Oct 17, 2026, 9:54 AM 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 17, 2026, 9:54 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

The Effect of Nutritional Supplementation on Actinic Purpura: A Pilot Study

NCT06840574
View directory record Official record
Conditions
Skin Health, Skin Aging of Face and Hands, Healthy, Ecchymosis
Interventions
Cyruta Plus: A Whole-Food Based Vitamin C supplement containing organic buckwheat (aerial parts) juice powder, organic buckwheat flour, bovine adrenal Cytosol™ extract, oat flour, honey, ascorbic acid, Low Dose Vitamin C, High Dose Vitamin C
Dietary Supplement
Lead sponsor
Standard Process Inc.
Industry
Eligibility
55 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Oct 17, 2026, 9:54 AM EDT
Completed Phase 1 Interventional

A Research Trial of High Dose Vitamin C and Chemotherapy for Metastatic Pancreatic Cancer

NCT01049880
View directory record Official record
Conditions
Pancreatic Neoplasms
Interventions
Gemcitabine with escalating ascorbic acid
Drug
Lead sponsor
Joseph J. Cullen
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Apr 21, 2017 · Synced Oct 17, 2026, 9:54 AM EDT
Withdrawn Phase 2 Interventional

A Clinical Trial Evaluating the Effect of Pharmacological Ascorbate on Radiation Therapy for Pancreatic Cancer Patients

NCT03541486
View directory record Official record
Conditions
Pancreatic Neoplasm
Interventions
Ascorbate, Gemcitabine, radiation therapy
Drug · Radiation
Lead sponsor
Joseph J. Cullen, MD, FACS
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 10, 2025 · Synced Oct 17, 2026, 9:54 AM EDT
Terminated Phase 1 Interventional

Ascorbate With Durvalumab in Non-Small Cell Lung Cancer (NSCLC)

NCT06083454
View directory record Official record
Conditions
Non-small Cell Lung Cancer
Interventions
Durvalumab, Pharmacological ascorbate, Surgery (SOC)
Drug · Procedure
Lead sponsor
William Zeitler
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 17, 2026, 9:54 AM 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 17, 2026, 9:54 AM EDT
Terminated Phase 2 Interventional Results available

High Dose Vitamin C in the Critically Ill Patient

NCT01587963
View directory record Official record
Conditions
Shock
Interventions
Ascorbic Acid, Ringers Lactate or Normal Saline
Drug · Other
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated May 11, 2017 · Synced Oct 17, 2026, 9:54 AM EDT
Withdrawn Phase 1Phase 2 Interventional

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

NCT03797443
View directory record Official record
Conditions
Metastatic Pancreatic Cancer
Interventions
Ascorbic Acid, nab paclitaxel, Cisplatin, Gemcitabine
Drug
Lead sponsor
Piedmont Cancer Institute
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
3
States / cities
Atlanta, Georgia • Fayetteville, Georgia • Newnan, Georgia
Source: ClinicalTrials.gov public record
Updated May 31, 2019 · Synced Oct 17, 2026, 9:54 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Research Study of IV Vitamin C in Combination With Irinotecan vs Irinotecan Alone for Advanced Colorectal CA

NCT01550510
View directory record Official record
Conditions
Stage IV Colorectal Cancer
Interventions
Ascorbic Acid, Irinotecan
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 6, 2025 · Synced Oct 17, 2026, 9:54 AM EDT
Completed No phase listed Observational

Low Dose Vitamin C in Burns >20% Compared to Previous Studies With High Dose Vitamin C

NCT05612867
View directory record Official record
Conditions
Burns, Ascorbic Acid Deficiency, Burn Shock, Burn Degree Second, Burn Degree Third, Fluid and Electrolyte Imbalance
Interventions
Vitamin C
Dietary Supplement
Lead sponsor
Arrowhead Regional Medical Center
Other
Eligibility
Not listed
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Colton, California
Source: ClinicalTrials.gov public record
Updated Nov 10, 2022 · Synced Oct 17, 2026, 9:54 AM 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 17, 2026, 9:54 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Vitamins C and Vitamin E and Cardiovascular Risk

NCT00362518
View directory record Official record
Conditions
Diabetes
Interventions
Study Arm A, Study Arm B, Study Arm C, Study Arm D
Dietary Supplement
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 12, 2024 · Synced Oct 17, 2026, 9:54 AM EDT
Withdrawn Early Phase 1 Interventional

Gemcitabine With Ascorbate Including Adolescents

NCT04877587
View directory record Official record
Conditions
Soft Tissue Sarcoma, Bone Sarcoma, Unresectable Soft Tissue Sarcoma, Metastatic Bone Sarcoma, Metastatic Soft-tissue Sarcoma, Unresectable Bone Sarcoma
Interventions
Ascorbate, Gemcitabine
Drug
Lead sponsor
David Dickens
Other
Eligibility
13 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Oct 17, 2026, 9:54 AM EDT
Active, not recruiting Early Phase 1 Interventional

Gemcitabine Plus Ascorbate for Sarcoma in Adults (Pilot)

NCT04634227
View directory record Official record
Conditions
Sarcoma, Soft Tissue Sarcoma, Unresectable Soft Tissue Sarcoma, Metastatic Bone Tumor, Bone Sarcoma
Interventions
Ascorbate
Drug
Lead sponsor
University of Iowa
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 17, 2026, 9:54 AM EDT
Active, not recruiting Phase 2 Interventional Results available

A Phase 2 Study Adding Ascorbate to Chemotherapy and Radiation Therapy for NSCLC

NCT02905591
View directory record Official record
Conditions
Carcinoma, Non-Small-Cell Lung, Non-Small Cell Lung Cancer, Nonsmall Cell Lung Cancer, Non-Small-Cell Lung Carcinoma, NSCLC
Interventions
Radiation Therapy, Paclitaxel, Carboplatin, Ascorbic Acid
Drug
Lead sponsor
Joseph J. Cullen, MD, FACS
Other
Eligibility
18 Years and older
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 31, 2026 · Synced Oct 17, 2026, 9:54 AM EDT
Completed Phase 1 Interventional

A Phase I Trial of High-Dose Ascorbate in Glioblastoma Multiforme

NCT01752491
View directory record Official record
Conditions
Glioblastoma, GBM, Glioblastoma Multiforme
Interventions
Ascorbate, Temozolomide, Radiation therapy
Drug · Radiation
Lead sponsor
Joseph J. Cullen, MD, FACS
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Dec 20, 2024 · Synced Oct 17, 2026, 9:54 AM 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 17, 2026, 9:54 AM EDT
Completed Phase 2 Interventional Results available

High Dose Vitamin C Intravenous Infusion in Patients With Resectable or Metastatic Solid Tumor Malignancies

NCT03146962
View directory record Official record
Conditions
Colorectal Cancer, Pancreatic Cancer, Lung Cancer
Interventions
Vitamin C
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
2
States / cities
Brooklyn, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated May 2, 2024 · Synced Oct 17, 2026, 9:54 AM EDT
Withdrawn Not applicable Interventional

The Effect of High Dose Vitamin C in Burn Patients

NCT00350077
View directory record Official record
Conditions
Burns
Interventions
Intravenous Vitamin C, Vitamin C
Drug
Lead sponsor
United States Army Institute of Surgical Research
Federal
Eligibility
18 Years to 72 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Fort Sam Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 20, 2011 · Synced Oct 17, 2026, 9:54 AM EDT
Completed Phase 1Phase 2 Interventional Results available

High Dose Ascorbate With Preoperative Radiation in Patients With Locally Advanced Soft Tissue Sarcomas

NCT03508726
View directory record Official record
Conditions
Soft Tissue Sarcoma
Interventions
Ascorbate
Drug
Lead sponsor
Mohammed Milhem
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jun 18, 2026 · Synced Oct 17, 2026, 9:54 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Ascorbic Acid (Vitamin C) Infusion in Human Sepsis

NCT01434121
View directory record Official record
Conditions
Sepsis, Septic Shock, Hypotension, Acute Lung Injury
Interventions
Ascorbic Acid, Placebo
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 1, 2018 · Synced Oct 17, 2026, 9:54 AM EDT
Suspended Phase 2 Interventional

Ascorbate in Myelodysplastic Syndrome

NCT07283900
View directory record Official record
Conditions
Myelodysplastic Syndromes
Interventions
High-dose ascorbate, Azacitidine
Drug
Lead sponsor
Prajwal Dhakal
Other
Eligibility
18 Years to 99 Years
Enrollment
38 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 Oct 9, 2026 · Synced Oct 17, 2026, 9:54 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Trial of Ascorbic Acid (AA) + Nanoparticle Paclitaxel Protein Bound + Cisplatin + Gemcitabine (AA NABPLAGEM)

NCT03410030
View directory record Official record
Conditions
Pancreatic Cancer, Pancreas Cancer, Pancreatic Adenocarcinoma Resectable, Pancreatic Ductal Adenocarcinoma, Pancreas Metastases
Interventions
High Dose Ascorbic Acid 25 g/m^2, Nanoparticle Paclitaxel protein bound 125mg/m^2, Cisplatin 25mg/m^2, Gemcitabine 1000mg/m^2, High Dose Ascorbic Acid 37.5 g/m^2, High Dose Ascorbic Acid 56.25 g/m^2, High Dose Ascorbic Acid 75 g/m^2
Drug
Lead sponsor
HonorHealth Research Institute
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Oct 17, 2026, 9:54 AM EDT