- Conditions
- COVID-19, Coronavirus Infection, Sars-CoV2, Corona Virus Infection, COVID, Coronavirus, Coronavirus-19, Coronavirus 19
- Interventions
- Hydroxychloroquine, Vitamin C, Vitamin D, Zinc
- Drug · Dietary Supplement
- Lead sponsor
- ProgenaBiome
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 254 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2020 – 2024
- U.S. locations
- 1
- States / cities
- Ventura, California
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Showing 25–48
of 24
matching trials from the live ClinicalTrials.gov search.
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- Conditions
- COVID, Covid-19, Corona Virus Infection, Coronavirus Infection, Coronavirus-19, SARS-CoV2, SARS-CoV Infection
- Interventions
- Ivermectin, Doxycycline Hcl, Zinc, Vitamin D3, Vitamin C
- Drug · Dietary Supplement
- Lead sponsor
- ProgenaBiome
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 31 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2022
- U.S. locations
- 1
- States / cities
- Ventura, California
- Conditions
- Arteriovenous Fistula Occlusion
- Interventions
- Placebo, Ascorbic Acid, Cuprimine Oral Product
- Drug
- Lead sponsor
- Southeast Renal Research Institute
- Other
- Eligibility
- 18 Years to 90 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- Chattanooga, Tennessee
- Conditions
- Venous Thromboembolism, Metastatic Pancreatic Cancer, Locally Advanced Pancreatic Adenocarcinoma
- Interventions
- Kinisoquin™, Placebo
- Drug
- Lead sponsor
- Quercis Pharma AG
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 480 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2025 – 2029
- U.S. locations
- 3
- States / cities
- Ventura, California • Miami Lakes, Florida • Boston, Massachusetts
- Conditions
- Carrier of Phenylketonuria, Healthy
- Interventions
- Phenylalanine (Phe), Placebo
- Dietary Supplement
- Lead sponsor
- University of Missouri-Columbia
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 36 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Columbia, Missouri
- Conditions
- Pharmacokinetics
- Interventions
- Liposomal vitamin C, 1 gram, Liposomal vitamin C, 2 grams, Liposomal vitamin C, 5 grams, Placebo
- Dietary Supplement
- Lead sponsor
- Natural Immune Systems Inc
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 24 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2020 – 2023
- U.S. locations
- 1
- States / cities
- Klamath Falls, Oregon
- Conditions
- Stroke, Ischemic Stroke, Cerebrovascular Accident
- Interventions
- Beet it Beetroot juice, Beet It Placebo Beetroot juice
- Drug
- Lead sponsor
- Wake Forest University Health Sciences
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 18 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2016
- U.S. locations
- 1
- States / cities
- Winston-Salem, North Carolina
- Conditions
- Hyperglycemia
- Interventions
- 5% dextrose, Vitamin C, Simvastatin, Sevoflurane
- Drug
- Lead sponsor
- US Department of Veterans Affairs
- Federal
- Eligibility
- 18 Years to 35 Years
- Enrollment
- 59 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2013
- U.S. locations
- 1
- States / cities
- Milwaukee, Wisconsin
- 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
- Conditions
- Abortion, Induced
- Interventions
- Mifepristone, misoprostol, Osmotic dilators, placebo
- Other · Drug · Device
- Lead sponsor
- Planned Parenthood League of Massachusetts
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 300 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2014
- U.S. locations
- 7
- States / cities
- San Francisco, California • Chicago, Illinois • Boston, Massachusetts + 3 more
- Conditions
- Females, Males, Menopause, Sedentary, Healthy Participants
- Interventions
- Vitamin C (Ascorbic Acid)
- Dietary Supplement
- Lead sponsor
- University of Virginia
- Other
- Eligibility
- 45 Years and older
- Enrollment
- 1 participant
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Charlottesville, Virginia
- 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
- Conditions
- Excessive Physical Exercise, Unspecified
- Interventions
- Arginine antioxidant supplements, Placebo
- Dietary Supplement
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 50 Years to 75 Years
- Enrollment
- 16 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2004 – 2005
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Lumbar Spine Surgery
- Interventions
- Vitamin C, Placebo
- Dietary Supplement
- Lead sponsor
- University of Kansas Medical Center
- Other
- Eligibility
- 45 Years to 80 Years
- Enrollment
- 55 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2022
- U.S. locations
- 1
- States / cities
- Kansas City, Kansas
- Conditions
- Healthy
- Interventions
- Antioxidant, Placebo
- Dietary Supplement · Other
- Lead sponsor
- University of Illinois at Chicago
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 93 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2015
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Gastroenteritis Escherichia Coli
- Interventions
- Ciprofloxacin, Peru-15-pCTB, Sodium bicarbonate/Ascorbic Acid/Aspartame Buffer
- Drug · Biological · Other
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- NIH
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 62 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2010
- U.S. locations
- 1
- States / cities
- Cincinnati, Ohio
- Conditions
- Healthy, Suboptimal Vitamin C Levels, Adequate Vitamin C Levels
- Interventions
- Qualia Vitamin C+, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Qualia Life Sciences
- Industry
- Eligibility
- 25 Years to 75 Years
- Enrollment
- 152 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026
- U.S. locations
- 1
- States / cities
- Carlsbad, California
- Conditions
- Safety, Tolerance
- Interventions
- Crystal Light (once serving), Liquid IV with amino acids (one serving), Liquid IV with amino acids (two servings), Liquid IV with amino acids (three servings)
- Dietary Supplement
- Lead sponsor
- University of Memphis
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 40 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022 – 2023
- U.S. locations
- 1
- States / cities
- Memphis, Tennessee
- Conditions
- Glutathione-cyclodextrin Complex Absorption
- Interventions
- Glutaryl Solution, Placebo Solution
- Dietary Supplement
- Lead sponsor
- Western University of Health Sciences
- Other
- Eligibility
- 21 Years to 65 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022
- U.S. locations
- 1
- States / cities
- Pomona, California
- Conditions
- Covid19, SARS-CoV Infection
- Interventions
- Vitamin C, melatonin, Placebo, Symptom Survey
- Dietary Supplement · Other
- Lead sponsor
- Lancaster General Hospital
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 122 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2020 – 2022
- U.S. locations
- 1
- States / cities
- Lancaster, Pennsylvania
- Conditions
- Vasodilation, Arterial Stiffness
- Interventions
- Acetylcholine, Sodium Nitroprusside, Ascorbic Acid
- Drug
- Lead sponsor
- Colorado State University
- Other
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 17 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2019 – 2022
- U.S. locations
- 1
- States / cities
- Fort Collins, Colorado
- Conditions
- Endothelial Dysfunction
- Interventions
- Dietary nitrate in the form of beetroot juice for all participnats, Nature Made vitamin c 1000 mg, Placebo
- Dietary Supplement
- Lead sponsor
- David Travis Thomas
- Other
- Eligibility
- 50 Years to 70 Years
- Enrollment
- 23 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2019
- U.S. locations
- 2
- States / cities
- Lexington, Kentucky
- Conditions
- Postural Tachycardia Syndrome
- Interventions
- Losartan, Ascorbic Acid (Vitamin C), Normal Saline
- Drug
- Lead sponsor
- New York Medical College
- Other
- Eligibility
- 14 Years to 29 Years
- Enrollment
- 74 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2015
- U.S. locations
- 1
- States / cities
- Hawthorne, New York
- 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