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ClinicalTrials.gov public records Last synced Oct 20, 2026, 8:41 AM EDT

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Showing 193–216 of 371 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: ascorbic acid Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Estrogen and Diabetes

NCT03436992
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Antioxidant Cocktail, Resveratrol, Placebo
Dietary Supplement · Other
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 40 Years
Enrollment
143 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
2
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 17, 2025 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Gelatin, Collagen, Gummy and PINP

NCT03357432
View directory record Official record
Conditions
Collagen Synthesis
Interventions
gelatin, collagen, gummy dose
Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 9, 2018 · Synced Oct 20, 2026, 8:41 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 20, 2026, 8:41 AM EDT
Recruiting Phase 2 Interventional

Assessment of Medrol Dosepak to Reduce Opioid Consumption in Foot and Ankle Surgical Patients

NCT06780202
View directory record Official record
Conditions
Foot Injuries and Disorders, Ankle Injuries and Disorders, Achilles Tendon Injury
Interventions
medrol dosepak, HYDROcodone Oral Tablet
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years to 95 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
Atlanta, Georgia • Johns Creek, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Oct 20, 2026, 8:41 AM 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 20, 2026, 8:41 AM 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 20, 2026, 8:41 AM EDT
Terminated Phase 1 Interventional

Arsenic Trioxide With or Without Ascorbic Acid in Treating Patients With Myelofibrosis

NCT01014546
View directory record Official record
Conditions
Essential Thrombocythemia, Polycythemia Vera, Primary Myelofibrosis
Interventions
Arsenic Trioxide, Ascorbic Acid, Laboratory Biomarker Analysis, Pharmacological Study
Drug · Dietary Supplement · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
19 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jul 22, 2022 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Phase 3 Interventional Results available

Vitamin C, Thiamine, and Steroids in Sepsis

NCT03509350
View directory record Official record
Conditions
Sepsis
Interventions
Vitamin C, Thiamine, Hydrocortisone, Vitamin C Placebo, Thiamine Placebo, Hydrocortisone Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
501 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
43
States / cities
Phoenix, Arizona • Tucson, Arizona • Los Angeles, California + 30 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2021 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Phase 2 Interventional Results available

Cephalon Decitabine, Arsenic Trioxide and Ascorbic Acid for Myelodysplastic Syndrome

NCT00621023
View directory record Official record
Conditions
Myelodysplastic Syndrome
Interventions
Decitabine, Arsenic Trioxide and Ascorbic Acid
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 4, 2013 · Synced Oct 20, 2026, 8:41 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 20, 2026, 8:41 AM EDT
Completed Not applicable Interventional

The Effects of a High Protein Diet on Microbiota, Gastrointestinal Function and Wellness in Older Women

NCT02445560
View directory record Official record
Conditions
Aging
Interventions
Probiotic capsule and Fiber Sachet, Probiotic capsule and Placebo sachet, Placebo capsule and Fiber Sachet, Placebo capsule and Placebo sachet
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
65 Years and older · Female only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
2
States / cities
Gainesville, Florida • Ocala, Florida
Source: ClinicalTrials.gov public record
Updated Mar 29, 2018 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Hmong Microbiome ANd Gout, Obesity, Vitamin C (HMANGO-C)

NCT04938024
View directory record Official record
Conditions
Hyperuricemia, Gout
Interventions
Vitamin C
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
135 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 7, 2023 · Synced Oct 20, 2026, 8:41 AM 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 20, 2026, 8:41 AM EDT
Terminated Phase 2 Interventional Results available

High Dose Intravenous Ascorbic Acid in Severe Sepsis

NCT02734147
View directory record Official record
Conditions
Sepsis
Interventions
Ascorbic Acid, Normal Saline
Drug · Other
Lead sponsor
Christiana Care Health Services
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Feb 16, 2021 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutrition Interventions to Support the Immune System in Response to Stress

NCT02053506
View directory record Official record
Conditions
Mitigation of Immune Function Decrements in Response to Stress
Interventions
Immune-enhancing nutritional beverage, Probiotics (BB-12), Placebo (for nutritional beverage and probiotic)
Dietary Supplement
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 45 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 2, 2017 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Obesity, Inflammation and Oxidative Stress

NCT01028976
View directory record Official record
Conditions
C-reactive Protein, Inflammation, Obesity, Oxidative Stress
Interventions
Vitamin C (ascorbic acid), Placebo tablet
Dietary Supplement
Lead sponsor
University of California, Berkeley
Other
Eligibility
18 Years and older
Enrollment
512 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Dec 2, 2015 · Synced Oct 20, 2026, 8:41 AM EDT
Completed No phase listed Observational

Screening Tests in Detecting Colorectal Cancer

NCT00025025
View directory record Official record
Conditions
Colorectal Cancer
Interventions
sample testing
Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
65 Years to 80 Years
Enrollment
4,482 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2009
U.S. locations
65
States / cities
Tuscon, Arizona • Oakland, California • Aurora, Colorado + 38 more
Source: ClinicalTrials.gov public record
Updated Jul 4, 2016 · Synced Oct 20, 2026, 8:41 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

A Clinical Trial to Examine the Efficacy of a Supplement to Support Healthy Hair and Skin

NCT06579742
View directory record Official record
Conditions
Hair Thinning, Hair Loss
Interventions
Live Conscious Beyond Collagen, Placebo
Dietary Supplement
Lead sponsor
Scale Media Inc
Industry
Eligibility
40 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Aug 30, 2024 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Placebo-Controlled Study Assessing the Use of a Novel Exfoliative Serum With A Chemical Peel to Improve Photodamage in Adults

NCT05908825
View directory record Official record
Conditions
Photodamaged Skin
Interventions
Vitamin C with AHA Exfoliative Serum, Placebo serum
Drug
Lead sponsor
Austin Institute for Clinical Research
Network
Eligibility
30 Years to 65 Years · Female only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Pflugerville, Texas
Source: ClinicalTrials.gov public record
Updated Jul 19, 2024 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Not applicable Interventional

Evaluation of Jarro-Dophilus EPS® Probiotic Formulations

NCT02693314
View directory record Official record
Conditions
Healthy
Interventions
Jarro-Dophilus EPS® (5 billion CFU/capsule), Jarro-Dophilus EPS® High Potency (25 billion CFU/capsule), Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 50 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 23, 2018 · Synced Oct 20, 2026, 8:41 AM EDT
Terminated Phase 2 Interventional Results available

Phase II Study of PARP Inhibitor Olaparib and IV Ascorbate in Castration Resistant Prostate Cancer

NCT05501548
View directory record Official record
Conditions
Prostate Cancer, Castration-resistant Prostate Cancer
Interventions
Olaparib, Vitamin C
Drug · Dietary Supplement
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older · Male only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 29, 2025 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Influence of Endothelial Function on Central and Peripheral Causes Of Exercise Impairment in Type 2 Diabetes

NCT00786019
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Exercise program, Ascorbic Acid (Vitamin C)
Behavioral · Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
30 Years to 55 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 12, 2023 · Synced Oct 20, 2026, 8:41 AM EDT
Completed Not applicable Interventional

Treating Oxidative Stress and the Metabolic Pathology of Autism

NCT00572741
View directory record Official record
Conditions
Autistic Disorder
Interventions
B12, Placebo, folate, B complex, vitamin C, cod liver oil, Mineral complex, carnitine
Dietary Supplement
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
3 Years to 7 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated May 5, 2016 · Synced Oct 20, 2026, 8:41 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 20, 2026, 8:41 AM EDT