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ClinicalTrials.gov public records Last synced Oct 5, 2026, 5:22 AM EDT

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Showing 25–48 of 60 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: No vitamin C Clear all
Not listed Not applicable Interventional

Supplemental Adjuvants for Intracellular Nutrition and Treatment

NCT00893724
View directory record Official record
Conditions
Neovascular Age-related Macular Degeneration, Diabetic Macular Edema
Interventions
Neutral pills with no medicinal effect, Inosine; Tocopherols, Tocotrienol, CoQ10 combination capsule; Niacinamide SR; Viatmin C; N-acetyl Cysteine; Complete Multivitamin with all minerals, Inosine; Tocopherol, Tocotrienol, CoQ10 combination capsule; Niacinamide; Vitamin C; N-acetyl Cysteine; Complete Multivitamin with all minerals; Minocycline
Drug · Dietary Supplement
Lead sponsor
Mid-Atlantic Retina Consultations, Inc.
Other
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Jul 20, 2011 · Synced Oct 5, 2026, 5:22 AM 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 5, 2026, 5:22 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Endothelial Dysfunction After SCI

NCT07227727
View directory record Official record
Conditions
Spinal Cord Injuries, Endothelial Dysfunction
Interventions
Intra-arterial Infusion of Vasoactive Agents, Intra-arterial Vitamin C Infusion, Blood Sampling
Procedure
Lead sponsor
Craig Hospital
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Englewood, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 14, 2025 · Synced Oct 5, 2026, 5:22 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Velcade, Trisenox, Vitamin C and Melphalan for Myeloma Patients

NCT00469209
View directory record Official record
Conditions
Myeloma
Interventions
Trisenox (Arsenic Trioxide), Velcade (Bortezomib), Melphalan, Vitamin C (Ascorbic Acid)
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Up to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 24, 2020 · Synced Oct 5, 2026, 5:22 AM EDT
Completed Phase 3 Interventional

Tretinoin, Cytarabine, and Daunorubicin Hydrochloride With or Without Arsenic Trioxide Followed by Tretinoin With or Without Mercaptopurine and Methotrexate in Treating Patients With Acute Promyelocytic Leukemia

NCT00003934
View directory record Official record
Conditions
Adult Acute Myeloid Leukemia With t(15;17)(q22;q12), Adult Acute Promyelocytic Leukemia (M3), Childhood Acute Promyelocytic Leukemia (M3), Untreated Adult Acute Myeloid Leukemia, Untreated Childhood Acute Myeloid Leukemia and Other Myeloid Malignancies
Interventions
tretinoin, daunorubicin hydrochloride, cytarabine, mercaptopurine, methotrexate, arsenic trioxide
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
2
States / cities
Chicago, Illinois • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 5, 2013 · Synced Oct 5, 2026, 5:22 AM EDT
Completed Not applicable Interventional

Diabetes Visual Function Supplement Study

NCT01646047
View directory record Official record
Conditions
Diabetes Mellitus - Type 1, Diabetes Mellitus - Type 2, Non-proliferative Diabetic Retinopathy
Interventions
multi-component nutritional supplement capsules, multi-component dietary supplement
Dietary Supplement
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jan 22, 2015 · Synced Oct 5, 2026, 5:22 AM EDT
Not listed Phase 4 Interventional

A Prospective Study to Evaluate the Raindrop Near Vision Inlay in Presbyopic Patients With Treatments to Optimize the Ocular Surface Before Implantation

NCT03126877
View directory record Official record
Conditions
Presbyopia
Interventions
Mitomycin C, Raindrop Near Vision Inlay
Drug · Device
Lead sponsor
Whitten Laser Eye
Other
Eligibility
41 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 14, 2017 · Synced Oct 5, 2026, 5:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Chronic Study on Body Composition, Training, Performance, and Recovery

NCT04230824
View directory record Official record
Conditions
Damage Muscle, Body Weight Changes, Performance Enhancing Product Use
Interventions
Pre-workout plus and Protein recovery plus, Placebo, 6-week resistance training program
Dietary Supplement · Other
Lead sponsor
Pharmanex
Industry
Eligibility
25 Years to 50 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 13, 2022 · Synced Oct 5, 2026, 5:22 AM EDT
Terminated Phase 1 Interventional Results available

Safety & Efficacy Study of Gemcitabine...With High Dose IV Vit. C (HDIVC)

NCT01654861
View directory record Official record
Conditions
Metastatic Adenocarcinoma of the Pancreas
Interventions
Gemcitabine, Intravenous and oral Ascorbic Acid (Vitamin C)
Drug
Lead sponsor
Eastern Regional Medical Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 26, 2018 · Synced Oct 5, 2026, 5:22 AM EDT
Completed Not applicable Interventional

A Prospective Trial to Assess Cost and Clinical Outcomes of a Clinical Pharmacogenomic Program

NCT02297126
View directory record Official record
Conditions
Adverse Drug Reaction
Interventions
Pharmacogenetic Intervention Arm (pharmacogenetic testing)
Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
4,465 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 8, 2021 · Synced Oct 5, 2026, 5:22 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Efficacy and Safety of Standard Oral Colonoscopic Preparations With or Without Neostigmine Compared to Pulse-Irrigation Colonic Lavage

NCT00745095
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Neostigmine
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jul 16, 2014 · Synced Oct 5, 2026, 5:22 AM EDT
Completed No phase listed Observational

VCSIP Follow-up Study

NCT03203603
View directory record Official record
Conditions
Asthma, Pulmonary Function, Wheezing, In Utero Nicotine
Interventions
No active intervention
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
6 Months to 4 Years
Enrollment
242 participants
Timeline
2017 – 2024
U.S. locations
2
States / cities
Indianapolis, Indiana • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 25, 2025 · Synced Oct 5, 2026, 5:22 AM 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 5, 2026, 5:22 AM EDT
Completed Not applicable Interventional

Vitamin D Reabsorption in Adolescents and Young Adults With HIV Infection

NCT00490412
View directory record Official record
Conditions
HIV Infections
Interventions
Vitamin D supplement, Placebo
Dietary Supplement · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 24 Years
Enrollment
207 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
14
States / cities
Los Angeles, California • San Francisco, California • Washington D.C., District of Columbia + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 28, 2017 · Synced Oct 5, 2026, 5:22 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 5, 2026, 5:22 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 5, 2026, 5:22 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 5, 2026, 5:22 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 5, 2026, 5:22 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

HAT for the Treatment of Sepsis Associated With NASTI

NCT05157360
View directory record Official record
Conditions
Necrotizing Soft Tissue Infection, Sepsis
Interventions
HAT, Placebo
Drug
Lead sponsor
Ascension Health
Industry
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Wichita, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 24, 2024 · Synced Oct 5, 2026, 5:22 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

The Effects of Vitamin E and Vitamin C and Exercise

NCT01369043
View directory record Official record
Conditions
Exercise and Non-exercise Effect Upon Vitamins E and C
Interventions
Vitamin E and Vitamin C
Dietary Supplement
Lead sponsor
USDA Grand Forks Human Nutrition Research Center
Federal
Eligibility
30 Years to 50 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Grand Forks, North Dakota
Source: ClinicalTrials.gov public record
Updated Mar 9, 2015 · Synced Oct 5, 2026, 5:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study Of Nutraceutical Drinks For Cholesterol (Evaluating Effectiveness and Tolerability)

NCT01152073
View directory record Official record
Conditions
Hyperlipidemia
Interventions
Placebo, Second Formulation, Third Formulation
Dietary Supplement
Lead sponsor
Healthy Drink Discoveries, Inc.
Other
Eligibility
20 Years to 80 Years
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Boca Raton, Florida
Source: ClinicalTrials.gov public record
Updated Mar 16, 2012 · Synced Oct 5, 2026, 5:22 AM 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 5, 2026, 5:22 AM EDT
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 5, 2026, 5:22 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Randomized Comparative Study Evaluating the Tolerability and Efficacy of Two Topical Therapies for the Treatment of Keloids and Hypertrophic Scars

NCT00754247
View directory record Official record
Conditions
Keloid, Hypertrophic Scar, Cicatrix, Hypertrophic
Interventions
0.5% hydrocortisone, silicone, vitamin E lotion, Onion extract gel, Cetearyl alcohol lotion
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jul 10, 2019 · Synced Oct 5, 2026, 5:22 AM EDT