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Showing 25–48 of 367 matching trials from the live ClinicalTrials.gov search.
Recruiting Not applicable Interventional Accepts healthy volunteers

Vascular Function and Oxidative Stress in Emergency Medical Responders

NCT06985394
Conditions
Cardiovascular Function in EMTs
Interventions
Antioxidant cocktail, Placebo
Dietary Supplement
Lead sponsor
University of Delaware
Other
Eligibility
20 Years to 40 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Newark, Delaware
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
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nitric Oxide Bioavailability in Chronic Obstructive Pulmonary Disease (COPD)

NCT01398943
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Tetrahydrobiopterin (BH4), Antioxidant Cocktail
Drug · Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Augusta, Georgia
Conditions
Knee Osteoarthritis
Interventions
Stem Cell Support Formula, Placebo
Dietary Supplement
Lead sponsor
Regenexx, LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
Broomfield, Colorado • Lone Tree, Colorado
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
Conditions
Coronary Artery Bypass Graft Surgery
Interventions
Ascorbic Acid
Drug
Lead sponsor
Geisinger Clinic
Other
Eligibility
21 Years to 79 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Wilkes-Barre, Pennsylvania
Conditions
Hunger
Interventions
High Dose Supplement, Low Dose Supplement, Placebo
Dietary Supplement
Lead sponsor
Texas Christian University
Other
Eligibility
18 Years to 60 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Fort Worth, Texas
Completed Not applicable Interventional Accepts healthy volunteers

Broccoli Seed Extract and Skin Health

NCT05745636
Conditions
Skin Inflammation
Interventions
Broccoli, mustard, vitamin C, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
25 Years to 57 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Kannapolis, North Carolina
Terminated Phase 2 Interventional Results available

Gemcitabine Plus Ascorbate for Sarcoma in Adults

NCT03468075
Conditions
Sarcoma, Soft Tissue Sarcoma, Unresectable Soft Tissue Sarcoma, Metastatic Bone Tumor, Bone Sarcoma
Interventions
Ascorbate, Gemcitabine
Drug
Lead sponsor
Mohammed Milhem, MBBS
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Iowa City, Iowa
Completed No phase listed Observational

VCSIP Follow-up Study

NCT03203603
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
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

Evaluation and Treatment of Copper/Zinc Imbalance in Children With Autism

NCT00325572
Conditions
Autism, Pervasive Developmental Disorder
Interventions
oral zinc and vitamin C supplements, oral Placebo
Drug · Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
3 Years to 8 Years
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
Hershey, Pennsylvania
Conditions
Myelodysplastic Syndromes
Interventions
Vitamin C
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
2
States / cities
Miami, Florida • New York, New York
Conditions
Finger Stiffness, Distal Radius Fracture
Interventions
500 mg vitamin c, 1 pill per day for 6 weeks, 1 placebo pill for 6 weeks
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Vitamin Deficiency
Interventions
EZPAK, Placebo
Dietary Supplement
Lead sponsor
Optimal Health Research
Other
Eligibility
26 Years to 75 Years
Enrollment
275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Salt Lake City, Utah
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Antenatal Micronutrient Supplementation and Infant Survival

NCT00860470
Conditions
Infant Mortality, Preterm Birth, Low Birth Weight, Neonatal Mortality, Perinatal Mortality
Interventions
Iron (27 mg) - folic acid (600 ug), Multiple micronutrient
Dietary Supplement
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
12 Years to 45 Years · Female only
Enrollment
44,567 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Conditions
Safety
Interventions
Ascorbate-Meglumine
Drug
Lead sponsor
LadeRx LLC
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Stage IV Pancreatic Cancer
Interventions
Ascorbic Acid
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
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
Completed Not applicable Interventional Accepts healthy volunteers

Impact of a Topical Cosmetic Product on Women's Hair

NCT06060834
Conditions
Hair Thinning, Hair Loss
Interventions
Topical Botanical Agent
Dietary Supplement
Lead sponsor
University of Memphis
Other
Eligibility
35 Years to 70 Years · Female only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Memphis, Tennessee
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Oxalate Formation From Ascorbic Acid

NCT04603898
Conditions
Kidney Stone
Interventions
Low Oxalate Diet, Carbon-13 Ascorbic Acid Oral Load
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
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
Conditions
Septic Shock
Interventions
Thiamine and Vitamin C
Dietary Supplement
Lead sponsor
Corewell Health South
Other
Eligibility
18 Years to 90 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Saint Joseph, Michigan
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
Completed Phase 2 Interventional Results available

Vitamin C & Thiamine to Treat Sepsis and Septic Shock

NCT03592277
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