- Conditions
- HIV Infection, Bone Mass
- Interventions
- cholecalciferol plus calcium carbonate
- Dietary Supplement
- Lead sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- NIH
- Eligibility
- 6 Years to 16 Years
- Enrollment
- 59 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2006
- U.S. locations
- 1
- States / cities
- New York, New York
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 49–72
of 415
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Vitamin D Deficiency
- Interventions
- Redoxon VI, placebo
- Dietary Supplement
- Lead sponsor
- Oregon State University
- Other
- Eligibility
- 55 Years to 75 Years
- Enrollment
- 42 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- Corvallis, Oregon
- Conditions
- X-linked Hypophosphatemia
- Interventions
- burosumab, Placebo
- Biological · Other
- Lead sponsor
- Kyowa Kirin, Inc.
- Industry
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 134 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2018
- U.S. locations
- 8
- States / cities
- Los Angeles, California • San Francisco, California • New Haven, Connecticut + 5 more
- Conditions
- Prostate Cancer, Vitamin D Deficiency, Stress Reaction
- Interventions
- cholecalciferol, Standard of Care Prostate Biopsy - collection of 13th core for RNA-seq, Standard of Care Prostate Biopsies at baseline and after one year vitamin D3 supplementation, Allostatic Load
- Drug · Procedure · Diagnostic Test
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 50 Years to 75 Years · Male only
- Enrollment
- 60 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2019 – 2022
- U.S. locations
- 1
- States / cities
- Charleston, South Carolina
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency
- Interventions
- UVB treatment
- Device
- Lead sponsor
- Boston University
- Other
- Eligibility
- 22 Years and older
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency, Stem Cell Transplant Complications, Pediatric Cancer, Blood Disorder, Pediatric Acute Myeloid Leukemia, Pediatric Acute Lymphoid Leukemia, Myelodysplastic Syndromes, Sickle Cell Anemia in Children, Aplastic Anemia, Thalassemia in Children
- Interventions
- Vitamin D3, Standard Vitamin D3 Supplementation
- Dietary Supplement
- Lead sponsor
- Phoenix Children's Hospital
- Other
- Eligibility
- 1 Year to 25 Years
- Enrollment
- 49 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2019
- U.S. locations
- 1
- States / cities
- Phoenix, Arizona
- Conditions
- Coronary Artery Disease, Chronic Kidney Disease, Hypovitaminosis D, Secondary Hyperparathyroidism
- Interventions
- paricalcitol, placebo
- Drug
- Lead sponsor
- Thomas Jefferson University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- Conditions
- Sickle Cell Disease, Anemia, Sickle Cell, Anemia, Hemolytic, Congenital, Respiratory Tract Diseases, Respiration Disorders, Acute Chest Syndrome, Lung Diseases, Asthma, Respiratory Tract Infections, Nutrition Disorders, Deficiency Diseases Vitamin, Vitamin D Deficiency
- Interventions
- Daily oral vitamin D3, 3,333 IU, Monthly oral vitamin D3, 100,000 IU, Placebo oral tablet
- Drug
- Lead sponsor
- Columbia University
- Other
- Eligibility
- 3 Years to 20 Years
- Enrollment
- 58 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2024
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Type 2 Diabetes, Vitamin B12 Deficiency, Neuropathy, Anemia
- Interventions
- Office visit intervention, Electronic Message Intervention
- Behavioral
- Lead sponsor
- Ohio State University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 489 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2015
- U.S. locations
- 1
- States / cities
- Columbus, Ohio
- Conditions
- Chronic Kidney Disease, Vitamin D Deficiency
- Interventions
- Ergocalciferol, Calcitriol
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 80 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2014
- U.S. locations
- 1
- States / cities
- Cambridge, Massachusetts
- Conditions
- X-linked Hypophosphatemia
- Interventions
- KK8123
- Drug
- Lead sponsor
- Kyowa Kirin Co., Ltd.
- Industry
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 39 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2029
- U.S. locations
- 5
- States / cities
- San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 2 more
- Conditions
- Septic Shock, Shock, Septic, Lactic Acidosis, Thiamine Deficiency
- Interventions
- Thiamine, Placebos
- Drug
- Lead sponsor
- The Cleveland Clinic
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- Weston, Florida
- Conditions
- Chronic Obstructive Pulmonary Disease, Muscle Weakness
- Interventions
- Cholecalciferol, Laboratory Biomarker Analysis, Multivitamin, Placebo, Questionnaire Administration
- Dietary Supplement · Other
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2017
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- Conditions
- Embolism and Thrombosis, Embolism, Vascular Diseases, Warfarin, Venous Thromboembolism, Thrombosis, Thromboembolism
- Interventions
- CYP 2C9 and VKORC1 Testing for Warfarin
- Other
- Lead sponsor
- Medco Health Solutions, Inc.
- Industry
- Eligibility
- 40 Years to 75 Years
- Enrollment
- 1,635 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2010
- U.S. locations
- 1
- States / cities
- Franklin Lakes, New Jersey
- Conditions
- Neural Tube Defects, Folic Acid Deficiency, Spina Bifida, Anencephaly-Spina Bifida
- Interventions
- Folic acid fortified iodized salt
- Dietary Supplement
- Lead sponsor
- Hydrocephalus and Neuroscience Institute
- Other
- Eligibility
- 18 Years to 45 Years · Female only
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022
- U.S. locations
- 1
- States / cities
- Orlando, Florida
- Conditions
- Hyperhomocysteinemia
- Interventions
- S-adenosylmethionine
- Dietary Supplement
- Lead sponsor
- Baylor Research Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 27 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2013
- U.S. locations
- 1
- States / cities
- Dallas, Texas
- Conditions
- Covid 19, Vitamin D Deficiency
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Arizona State University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 41 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020
- U.S. locations
- 1
- States / cities
- Tempe, Arizona
- Conditions
- Burns, Bone Demineralization
- Interventions
- Vitamin D2, Vitamin D3
- Dietary Supplement
- Lead sponsor
- Shriners Hospitals for Children
- Other
- Eligibility
- 6 Months to 18 Years
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2011
- U.S. locations
- 1
- States / cities
- Cincinnati, Ohio
- Conditions
- Vitamin D Deficiency, Cardiovascular Diseases
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 55 Years to 75 Years · Female only
- Enrollment
- 99 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2014
- U.S. locations
- 3
- States / cities
- Bowler, Wisconsin • Lac du Flambeau, Wisconsin • Madison, Wisconsin
- Conditions
- Vitamin D Deficiency, Covid19
- Interventions
- Vitamin D
- Other
- Lead sponsor
- Parkview Medical Center
- Other
- Eligibility
- 18 Years to 100 Years
- Enrollment
- 50 participants
- Timeline
- 2020 – 2022
- U.S. locations
- 1
- States / cities
- Pueblo, Colorado
- Conditions
- Iron Deficiency, Iron Deficiency Anemia
- Interventions
- Vitamin E, Placebo
- Drug · Other
- Lead sponsor
- University of Colorado, Denver
- Other
- Eligibility
- 9 Months to 2 Years
- Enrollment
- 44 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2013
- U.S. locations
- 1
- States / cities
- Aurora, Colorado
- Conditions
- Nephrolithiasis, Urolithiasis, Idiopathic Hypercalciuria, Vitamin D Deficiency, Disorder of Vitamin D
- Interventions
- Ergocalciferol
- Drug
- Lead sponsor
- New York Presbyterian Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Healthy
- Interventions
- Vitamin D3 1000 IU, Placebo Tablet
- Dietary Supplement
- Lead sponsor
- University of Pittsburgh
- Other
- Eligibility
- 8 Years to 14 Years
- Enrollment
- 157 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- Pittsburgh, Pennsylvania
- Conditions
- Hypercholesterolemia, Vitamin D Deficiency
- Interventions
- Vitamin D (1000 or 2000 IU/day), Placebo
- Dietary Supplement · Other
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 130 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2012
- U.S. locations
- 1
- States / cities
- San Francisco, California