- 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
Search Results
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Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
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Showing 1–24
of 367
matching trials from the live ClinicalTrials.gov search.
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- Conditions
- Healthy, Suboptimal Vitamin C Levels
- Interventions
- Qualia Vitamin C+, Placebo
- Dietary Supplement
- Lead sponsor
- Qualia Life Sciences
- Industry
- Eligibility
- 25 Years and older
- Enrollment
- 36 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Carlsbad, California
- Conditions
- Preeclampsia
- Interventions
- Dietary Supplement/Vitamins, Placebo for Vitamin C and Vitamin E
- Drug
- Lead sponsor
- The George Washington University Biostatistics Center
- Other
- Eligibility
- Female only
- Enrollment
- 10,154 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2003 – 2009
- U.S. locations
- 16
- States / cities
- Birmingham, Alabama • Chicago, Illinois • Detroit, Michigan + 13 more
- Conditions
- Femoral Fracture, Fragility Fracture, Muscle Atrophy
- Interventions
- Essential Amino Acid Supplementation
- Combination Product
- Lead sponsor
- Michael C Willey
- Other
- Eligibility
- 65 Years and older
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2026
- U.S. locations
- 2
- States / cities
- Iowa City, Iowa • Eugene, Oregon
- Conditions
- Atherosclerosis, Type 2 Diabetes
- Interventions
- Vitamin C
- Dietary Supplement
- Lead sponsor
- University of New Mexico
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 8 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2007
- U.S. locations
- 1
- States / cities
- Albuquerque, New Mexico
- Conditions
- Acne, Eczema, Skin Aging
- Interventions
- Hemptress Oil
- Other
- Lead sponsor
- Hemptress
- Industry
- Eligibility
- 21 Years to 65 Years
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024
- U.S. locations
- 1
- States / cities
- Santa Monica, California
- Conditions
- Vitamin C Deficiency, Smoking, Surgery, Surgery--Complications, Wound, Wound Complication, Wound Infection, Wound Dehiscence, Wound of Skin, Mandible Fracture, Mandible Open Fracture, Mandible Closed Fracture, Mandibular Fractures, Ascorbic Acid Deficiency, Oxidative Stress, Inflammation
- Interventions
- Vitamin C, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Hennepin Healthcare Research Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 45 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2021
- U.S. locations
- 1
- States / cities
- Minneapolis, Minnesota
- Conditions
- Dietary Supplements, Connective Tissue, Exercise
- Interventions
- Natural Product Supplement, Placebo control
- Dietary Supplement
- Lead sponsor
- University of California, Davis
- Other
- Eligibility
- 18 Years to 30 Years
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023 – 2026
- U.S. locations
- 1
- States / cities
- Davis, California
- 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
- Conditions
- Asthma
- Interventions
- Fish Oil, Ascorbic Acid, Fish Oil Placebo, Ascorbic Acid Placebo
- Dietary Supplement
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 18 Years to 40 Years
- Enrollment
- 14 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010
- U.S. locations
- 1
- States / cities
- Bloomington, Indiana
- 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
- Conditions
- Effect of Food Supplement
- Interventions
- Placebo, Hydrolized Collagen, PrimaColl, Whey protein
- Dietary Supplement
- Lead sponsor
- University of California, Davis
- Other
- Eligibility
- 18 Years to 30 Years
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022 – 2024
- U.S. locations
- 1
- States / cities
- Davis, California
- 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
- Conditions
- Burn
- Interventions
- Vitamin and Mineral supplementation
- Dietary Supplement
- Lead sponsor
- Southern Illinois University
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 28 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Springfield, Illinois
- 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
- Renal Insufficiency, Chronic
- Interventions
- ISMN, Vitamin C
- Drug · Dietary Supplement
- Lead sponsor
- University of Pennsylvania
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 8 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- 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
- 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
- Metastatic Pancreatic Cancer
- Interventions
- Gemcitabine and Erlotinib, Intravenous Vitamin C
- Drug · Dietary Supplement
- Lead sponsor
- Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 14 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- 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
- Conditions
- Common Cold, Gastroenteritis
- Interventions
- dietary supplement--echinacea, propolis, and vitamin c
- Drug
- Lead sponsor
- The Cleveland Clinic
- Other
- Eligibility
- 3 Years to 6 Years
- Enrollment
- 104 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2006
- U.S. locations
- 1
- States / cities
- Cleveland, Ohio
- Conditions
- Fontan Procedure, Hypoplastic Left Heart Syndrome, Tricuspid Atresia
- Interventions
- Vitamin C, Placebo
- Dietary Supplement
- Lead sponsor
- University of Michigan
- Other
- Eligibility
- 8 Years to 25 Years
- Enrollment
- 53 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2010
- U.S. locations
- 1
- States / cities
- Ann Arbor, Michigan
- Conditions
- Cardiovascular Disease
- Interventions
- Antioxidant cocktail, Biopsy, Placebo, NMD; 0.4mg sub-lingual nitroglycerin spray
- Dietary Supplement · Other · Drug
- Lead sponsor
- Augusta University
- Other
- Eligibility
- 18 Years to 40 Years
- Enrollment
- 74 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2027
- U.S. locations
- 1
- States / cities
- Augusta, Georgia
- Conditions
- Heart Failure
- Interventions
- Vitamin C 500 mg, Vitamin C 1000 mg, Placebo
- Dietary Supplement · Other
- Lead sponsor
- University of North Carolina, Chapel Hill
- Other
- Eligibility
- 18 Years to 99 Years
- Enrollment
- 36 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2020
- U.S. locations
- 1
- States / cities
- Chapel Hill, North Carolina