- Conditions
- Craniocerebral Trauma, Intracranial Aneurysm, Brain Neoplasms, Spinal Cord Injuries, Seizures, Meningitis, Stroke, Intracranial Hemorrhages, Critical Illness, Vitamin d Deficiency
- Interventions
- Cholecalciferol, Placebo
- Drug · Other
- Lead sponsor
- University of Utah
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 274 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2018
- U.S. locations
- 1
- States / cities
- Salt Lake City, Utah
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 1–24
of 340
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Vitamin D Deficiency, Sarcopenia
- Interventions
- vitamin D3, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Tufts University
- Other
- Eligibility
- 60 Years to 85 Years
- Enrollment
- 100 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015 – 2018
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- 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
- Conditions
- Vitamin D Deficiency
- Interventions
- cholecalciferol, 25(OH)D
- Dietary Supplement
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 20 Years to 60 Years
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Obesity, Vitamin D Deficiency, Psychosis, Schizophrenia, Schizoaffective Disorder
- Interventions
- Ergocalciferols
- Drug
- Lead sponsor
- University of Massachusetts, Worcester
- Other
- Eligibility
- 10 Years to 18 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2010
- U.S. locations
- 1
- States / cities
- Worcester, Massachusetts
- Conditions
- Hypophosphatasia (HPP)
- Interventions
- Asfotase Alfa
- Biological
- Lead sponsor
- Alexion Pharmaceuticals, Inc.
- Industry
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 6 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2009
- U.S. locations
- 2
- States / cities
- St Louis, Missouri • Durham, North Carolina
- Conditions
- Hypovitaminosis D
- Interventions
- Cholecalciferol, Placebo
- Dietary Supplement
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 100 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2017
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency
- Interventions
- Placebo, 800 IU/day vitamin D supplementation with feedings in the first 28 days after birth, Usual Care
- Dietary Supplement · Other
- Lead sponsor
- The University of Texas Health Science Center, Houston
- Other
- Eligibility
- 24 Hours to 96 Hours
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2029
- U.S. locations
- 1
- States / cities
- Galveston, Texas
- 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
- Conditions
- Vitamin D Deficiency, Pregnancy
- Interventions
- cholecalciferol (vitamin D3), cholecalciferol
- Drug
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 16 Years to 45 Years · Female only
- Enrollment
- 564 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2009
- U.S. locations
- 1
- States / cities
- Columbia, South Carolina
- Conditions
- Type 2 Diabetes, Vitamin D Deficiency
- Interventions
- Vitamin D2, Sugar pill
- Dietary Supplement · Other
- Lead sponsor
- University of Alabama at Birmingham
- Other
- Eligibility
- 12 Years to 18 Years
- Enrollment
- 31 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2013
- U.S. locations
- 1
- States / cities
- Birmingham, Alabama
- Conditions
- Precursor Cell Lymphoblastic Leukemia-Lymphoma, Vitamin D Deficiency
- Interventions
- Vitamin D and Calcium Citrate
- Dietary Supplement
- Lead sponsor
- Children's Hospital Los Angeles
- Other
- Eligibility
- 10 Years to 29 Years
- Enrollment
- 76 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2016
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Inflammatory Bowel Diseases, Vitamin D Deficiency
- Interventions
- Vitamin D (ergocalciferol and/ or cholecalciferol)
- Dietary Supplement
- Lead sponsor
- Cedars-Sinai Medical Center
- Other
- Eligibility
- 18 Years to 85 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency
- Interventions
- Vitamin D, Placebo, Standard of Care
- Dietary Supplement · Other
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 70 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Vitamin D Deficiency, Type 2 Diabetes Mellitus, Cardiovascular Disease
- Interventions
- Vitamin D3, Calcium carbonate
- Dietary Supplement
- Lead sponsor
- Washington University School of Medicine
- Other
- Eligibility
- 50 Years to 70 Years
- Enrollment
- 86 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2018
- U.S. locations
- 1
- States / cities
- St Louis, Missouri
- Conditions
- Vitamin D Deficiency
- Interventions
- cholecalciferol (vitamin D3), cholecalciferol
- Drug
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 16 Years to 45 Years · Female only
- Enrollment
- 501 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2004 – 2010
- U.S. locations
- 1
- States / cities
- Charleston, South Carolina
- Conditions
- Spinal Muscular Atrophy, Fragile X Syndrome, Fragile X - Premutation, Duchenne Muscular Dystrophy, Hyperinsulinemic Hypoglycemia, Familial 1, Diabetes Mellitus, Adrenoleukodystrophy, Neonatal, Medium-chain Acyl-CoA Dehydrogenase Deficiency, Very Long Chain Acyl Coa Dehydrogenase Deficiency, Beta-ketothiolase Deficiency, Severe Combined Immunodeficiency Due to Adenosine Deaminase Deficiency, Primary Hyperoxaluria Type 1, Congenital Bile Acid Synthesis Defect Type 2, Pyridoxine-Dependent Epilepsy, Hereditary Fructose Intolerance, Hypophosphatasia, Hyperargininemia, Mucopolysaccharidosis Type 6, Argininosuccinic Aciduria, Citrullinemia, Type I, Wilson Disease, Maple Syrup Urine Disease, Type 1A, Maple Syrup Urine Disease, Type 1B, Biotinidase Deficiency, Neonatal Severe Primary Hyperparathyroidism, Intrinsic Factor Deficiency, Usher Syndrome Type 1D/F Digenic (Diagnosis), Cystic Fibrosis, Stickler Syndrome Type 2, Stickler Syndrome Type 1, Alport Syndrome, Autosomal Recessive, Alport Syndrome, X-Linked, Carbamoyl Phosphate Synthetase I Deficiency Disease, Carnitine Palmitoyl Transferase 1A Deficiency, Carnitine Palmitoyltransferase II Deficiency, Cystinosis, Chronic Granulomatous Disease, Cerebrotendinous Xanthomatoses, Maple Syrup Urine Disease, Type 2, Severe Combined Immunodeficiency Due to DCLRE1C Deficiency, Thyroid Dyshormonogenesis 6, Thyroid Dyshormonogenesis 5, Supravalvar Aortic Stenosis, Factor X Deficiency, Hemophilia A, Hemophilia B, Tyrosinemia, Type I, Fructose 1,6 Bisphosphatase Deficiency, Glycogen Storage Disease Type I, G6PD Deficiency, Glycogen Storage Disease II, Galactokinase Deficiency, Mucopolysaccharidosis Type IV A, Galactosemias, Guanidinoacetate Methyltransferase Deficiency, Agat Deficiency, Glutaryl-CoA Dehydrogenase Deficiency, Gtp Cyclohydrolase I Deficiency, Hyperinsulinism-Hyperammonemia Syndrome, Primary Hyperoxaluria Type 2, 3-Hydroxyacyl-CoA Dehydrogenase Deficiency, Long-chain 3-hydroxyacyl-CoA Dehydrogenase Deficiency, Mitochondrial Trifunctional Protein Deficiency, Sickle Cell Disease, Beta-Thalassemia, Holocarboxylase Synthetase Deficiency, 3-Hydroxy-3-Methylglutaric Aciduria, Primary Hyperoxaluria Type 3, Hermansky-Pudlak Syndrome 1, Hermansky-Pudlak Syndrome 4, Apparent Mineralocorticoid Excess, HSDB, CBAS1, Mucopolysaccharidosis Type 2, Mucopolysaccharidosis Type 1, Severe Combined Immunodeficiency, X Linked, Severe Combined Immunodeficiency Due to IL-7Ralpha Deficiency, Diabetes Mellitus, Permanent Neonatal, Isovaleric Acidemia, Severe Combined Immunodeficiency T-Cell Negative B-Cell Positive Due to Janus Kinase-3 Deficiency (Disorder), Jervell and Lange-Nielsen Syndrome 2, Hyperinsulinemic Hypoglycemia, Familial, 2, Diabetes Mellitus, Permanent Neonatal, With Neurologic Features, Jervell and Lange-Nielsen Syndrome 1, Lysosomal Acid Lipase Deficiency, CblF, 3-Methylcrotonyl CoA Carboxylase 1 Deficiency, 3-Methylcrotonyl CoA Carboxylase 2 Deficiency, Waardenburg Syndrome Type 2A, Methylmalonic Aciduria cblA Type, Methylmalonic Aciduria cblB Type, Methylmalonic Aciduria and Homocystinuria Type cblC, MAHCD, Methylmalonic Aciduria Due to Methylmalonyl-CoA Mutase Deficiency, Congenital Disorder of Glycosylation Type 1B, Mthfr Deficiency, Methylcobalamin Deficiency Type Cbl G (Disorder), Methylcobalamin Deficiency Type cblE, Usher Syndrome, Type 1B, N-acetylglutamate Synthase Deficiency, Ornithine Transcarbamylase Deficiency, Phenylketonurias, Waardenburg Syndrome Type 1, Congenital Hypothyroidism, Propionic Acidemia, Usher Syndrome, Type 1F, Pancreatic Agenesis 1, Hereditary Hypophosphatemic Rickets, Glycogen Storage Disease IXB, Glycogen Storage Disease IXC, MOWS, Epilepsy, Early-Onset, Vitamin B6-Dependent, Pyridoxal Phosphate-Responsive Seizures, Pituitary Hormone Deficiency, Combined, 1, Ptsd, Dihydropteridine Reductase Deficiency, Severe Combined Immunodeficiency Due to RAG1 Deficiency, Severe Combined Immunodeficiency Due to RAG2 Deficiency, Retinoblastoma, Multiple Endocrine Neoplasia Type 2B, Pseudohypoaldosteronism, Type I, Liddle Syndrome, Biotin-Responsive Basal Ganglia Disease, SCD, DIAR1, GSD1C, Acrodermatitis Enteropathica, Thyroid Dyshormonogenesis 1, Riboflavin Transporter Deficiency, Waardenburg Syndrome, Type 2E, SRD, Congenital Lipoid Adrenal Hyperplasia Due to STAR Deficiency, Barth Syndrome, Adrenocorticotropic Hormone Deficiency, Transcobalamin II Deficiency, Thyroid Dyshormonogenesis 3, Segawa Syndrome, Autosomal Recessive, Autosomal Recessive Nonsyndromic Hearing Loss, Thyroid Dyshormonogenesis 2A, Congenital Isolated Thyroid Stimulating Hormone Deficiency, Hypothyroidism Due to TSH Receptor Mutations, Usher Syndrome Type 1C, Usher Syndrome Type 1G (Diagnosis), Von Willebrand Disease, Type 3, Combined Immunodeficiency Due to ZAP70 Deficiency, Adenine Phosphoribosyltransferase Deficiency, Metachromatic Leukodystrophy, Canavan Disease, Menkes Disease, Carbonic Anhydrase VA Deficiency, Developmental and Epileptic Encephalopathy 2, 17 Alpha-Hydroxylase Deficiency, Smith-Lemli-Opitz Syndrome, Krabbe Disease, Glutathione Synthetase Deficiency, Mucopolysaccharidosis Type 7, Rett Syndrome, Molybdenum Cofactor Deficiency, Type A, Niemann-Pick Disease, Type C1, Niemann-Pick Disease Type C2, Ornithine Aminotransferase Deficiency, 3-Phosphoglycerate Dehydrogenase Deficiency, Leber Congenital Amaurosis 2, Dravet Syndrome, Mucopolysaccharidosis Type 3 A, Ornithine Translocase Deficiency, Carnitine-acylcarnitine Translocase Deficiency, Glucose Transporter Type 1 Deficiency Syndrome, Creatine Transporter Deficiency, Niemann-Pick Disease Type A, Pitt Hopkins Syndrome, Tuberous Sclerosis 1, Tuberous Sclerosis 2, Ataxia With Isolated Vitamin E Deficiency, Angelman Syndrome, Prader-Willi Syndrome, Homocystinuria, Permanent Neonatal Diabetes Mellitus, Transient Neonatal Diabetes Mellitus, Factor VII Deficiency, Glycogen Storage Disease Type IXA1, Glycogen Storage Disease, Type IXA2, Glycogen Storage Disease IC, Glycogen Storage Disease Type IB, Central Hypoventilation Syndrome With or Without Hirschsprung Disease
- Interventions
- Confirmatory Testing
- Diagnostic Test
- Lead sponsor
- RTI International
- Other
- Eligibility
- 1 Day to 31 Days
- Enrollment
- 30,000 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2026
- U.S. locations
- 1
- States / cities
- Research Triangle Park, North Carolina
- Conditions
- Overweight and Obesity, Vitamin D Deficiency, Magnesium Deficiency, Cardiovascular Risk Factor
- Interventions
- Vitamin D and magnesium, Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- Drexel University
- Other
- Eligibility
- 30 Years to 70 Years
- Enrollment
- 109 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2021
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- Conditions
- Secondary Hyperparathyroidism
- Interventions
- Teriparatide
- Drug
- Lead sponsor
- University of Maryland, Baltimore
- Other
- Eligibility
- 40 Years to 59 Years · Female only
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2008
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Vitamin D Deficiency, Obesity
- Interventions
- Not listed
- Lead sponsor
- University of Massachusetts, Worcester
- Other
- Eligibility
- 3 Years to 12 Years
- Enrollment
- 45 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2012
- U.S. locations
- 1
- States / cities
- Worcester, Massachusetts
- Conditions
- Vitamin D Deficiency, Burns
- Interventions
- Ergocalciferol Capsules
- Drug
- Lead sponsor
- University of Texas Southwestern Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 48 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2025
- U.S. locations
- 1
- States / cities
- Dallas, Texas
- Conditions
- Metabolic Bone Disease, Osteopenia, Neonatal Rickets
- Interventions
- Vibro-acoustic analysis (VAA), based on ultrasound radiation force
- Diagnostic Test
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 3 Days to 8 Months
- Enrollment
- 37 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2024
- U.S. locations
- 1
- States / cities
- Rochester, Minnesota
- 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
- Chronic Kidney Diseases, Deficiency, Vitamin D
- Interventions
- Cholecalciferol
- Dietary Supplement
- Lead sponsor
- University of Colorado, Denver
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 23 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2019
- U.S. locations
- 2
- States / cities
- Aurora, Colorado • Pittsburgh, Pennsylvania