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Showing 49–72 of 505 matching trials from the live ClinicalTrials.gov search.
Completed Phase 1 Interventional Results available

Vitamin D and Severe Asthma Exacerbations

NCT01921894
Conditions
Asthma
Interventions
Cholecalciferol
Dietary Supplement
Lead sponsor
University of Pittsburgh
Other
Eligibility
6 Years to 14 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Terminated Phase 2 Interventional Results available

Oral Calcitriol With Ketoconazole in CRPC

NCT03261336
Conditions
Castration-resistant Prostate Cancer
Interventions
Calcitriol, Ketoconazole, Hydrocortisone
Drug
Lead sponsor
Donald Trump, MD
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Fairfax, Virginia
Recruiting Not applicable Interventional Accepts healthy volunteers

A Study of a Dietary Supplement on Serum Biomarkers in Children

NCT07385144
Conditions
Nutritional Status, Serum Biomarkers
Interventions
Dietary Supplement (Kids Multi & Omegas)
Dietary Supplement
Lead sponsor
SF Research Institute, Inc.
Network
Eligibility
4 Years to 15 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
San Francisco, California
Conditions
Chronic Kidney Disease stage3, Chronic Kidney Disease stage4, Vitamin d Deficiency, Secondary Hyperparathyroidism
Interventions
CTAP101, Placebo
Drug
Lead sponsor
OPKO Health, Inc.
Industry
Eligibility
8 Years to 17 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
2
States / cities
Columbus, Ohio • Greenville, South Carolina
Completed No phase listed Observational Results available

Vitamin D and Screening Colonoscopy or Polyp Surveillance

NCT02269332
Conditions
Colon Cancer
Interventions
Screening Colonoscopy
Other
Lead sponsor
Mike O'Callaghan Military Hospital
Federal
Eligibility
18 Years and older
Enrollment
298 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Las Vegas, Nevada
Conditions
Gastric Bypass, Parathyroid Hormone
Interventions
Paricalcitol, Cholecalciferol, Placebo
Drug
Lead sponsor
Kerstyn C. Zalesin, M.D.
Other
Eligibility
18 Years to 100 Years
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Royal Oak, Michigan
Conditions
Osteoporosis
Interventions
placebo, ALX1-11
Drug
Lead sponsor
Shire
Industry
Eligibility
45 Years and older · Female only
Enrollment
2,532 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2003
U.S. locations
107
States / cities
Birmingham, Alabama • Huntsville, Alabama • Phoenix, Arizona + 95 more
Conditions
Rheumatoid Arthritis
Interventions
Teriparatide, calcium citrate, Vitamin D, TNF antagonist
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
45 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
3
States / cities
Boston, Massachusetts • Worcester, Massachusetts
Completed Not applicable Interventional Results available

Vitamin D Repletion in Coronary Artery Disease

NCT01570309
Conditions
Vitamin D Deficiency, Coronary Artery Disease, Endothelial Dysfunction, Inflammation
Interventions
Ergocalciferol, Sugar pill
Drug · Other
Lead sponsor
Seth I. Sokol, M.D.
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
2
States / cities
The Bronx, New York
Conditions
Leukemia, Myelodysplastic Syndromes, Myelodysplastic/Myeloproliferative Neoplasms
Interventions
cholecalciferol, arsenic trioxide
Dietary Supplement · Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
Up to 120 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Conditions
Diabetic Nephropathy, Chronic Kidney Disease
Interventions
Zemplar (paricalcitol) capsules, Placebo
Drug
Lead sponsor
Abbott
Industry
Eligibility
20 Years and older
Enrollment
281 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
27
States / cities
Phoenix, Arizona • Fountain Valley, California • Yuba City, California + 21 more
Conditions
Mucopolysaccharidosis Disorders, Hurler Syndrome, Hunter Syndrome, Maroteaux Lamy Syndrome, Sly Syndrome, Alpha-Mannosidosis, Fucosidosis, Aspartylglucosaminuria, Glycoprotein Metabolic Disorders, Sphingolipidoses, Recessive Leukodystrophies, Globoid Cell Leukodystrophy, Metachromatic Leukodystrophy, Niemann-Pick B, Niemann-Pick C Subtype 2, Sphingomyelin Deficiency, Peroxisomal Disorders, Adrenoleukodystrophy With Cerebral Involvement, Zellweger Syndrome, Neonatal Adrenoleukodystrophy, Infantile Refsum Disease, Acyl-CoA Oxidase Deficiency, D-Bifunctional Enzyme Deficiency, Multifunctional Enzyme Deficiency, Alpha-methylacyl-CoA Racmase Deficiency, Mitochondrial Neurogastrointestingal Encephalopathy, Severe Osteopetrosis, Hereditary Leukoencephalopathy With Axonal Spheroids (HDLS; CSF1R Mutation), Inherited Metabolic Disorders
Interventions
Stem Cell Transplantation, IMD Preparative Regimen, Osteopetrosis Only Preparative Regimen, Osteopetrosis Haploidentical Only Preparative Regimen, cALD SR-A (Standard-Risk, Regimen A), cALD SR-B (Standard-Risk, Regimen B), cALD HR-D (High-Risk, Regimen C), cALD HR-D (High-Risk, Regimen D)
Biological · Drug
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
Up to 55 Years
Enrollment
149 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2029
U.S. locations
1
States / cities
Minneapolis, Minnesota
Conditions
Prematurity; Extreme
Interventions
Vitamin D supplementation, No additional vitamin D supplementation
Dietary Supplement · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
1 Day to 4 Days
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effect of Vitamin D Repletion on Insulin Resistance and Systemic Inflammation

NCT01354964
Conditions
Insulin Resistance
Interventions
Vitamin D, Placebo
Drug
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
21 Years to 75 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
The Bronx, New York
Conditions
Bariatric Surgery Candidate
Interventions
AquaVanta Chewable Tablet, Flinstones Complete, Nature Made Calcium Softgels, Twin Labs Iron Caps, Rexall Vitamin B12 Tablet
Dietary Supplement
Lead sponsor
Yasoo Health
Industry
Eligibility
18 Years to 65 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Conditions
Myelodysplastic Syndrome
Interventions
DN-101 (calcitriol)
Drug
Lead sponsor
Novacea
Industry
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
10
States / cities
Hoover, Alabama • San Francisco, California • Tampa, Florida + 7 more
Completed Not applicable Interventional Results available

Therapeutic Diets in Alzheimer's Disease

NCT03860792
Conditions
Alzheimer Disease
Interventions
Ketogenic Diet, Therapeutic Lifestyles Changes Diet
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
50 Years to 90 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Fairway, Kansas
Completed Not applicable Interventional Accepts healthy volunteers

Comparative Effectiveness of Vitamin D and Repletion Strategies

NCT01524874
Conditions
Hypovitaminosis D, Insulin Resistance, Diabetes
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Bastyr University
Other
Eligibility
18 Years to 65 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
2
States / cities
Kailua-Kona, Hawaii • Kenmore, Washington
Conditions
Pancreatic Cancer, Pancreas Adenocarcinoma, Advanced Pancreatic Cancer, Metastatic Pancreatic Cancer, Metastatic Pancreatic Adenocarcinoma
Interventions
Pembrolizumab, paricalcitol, placebo
Drug
Lead sponsor
Translational Genomics Research Institute
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
6
States / cities
Scottsdale, Arizona • Duarte, California • Westwood, Kansas + 3 more
Completed No phase listed Observational Accepts healthy volunteers

Relationships Between Vitamin D and Orthopedic Trauma

NCT04564625
Conditions
Fracture, Fracture Nonunion, Fractures, Bone, Vitamin D
Interventions
Vitamin D Assessment, Fracture
Other
Lead sponsor
Methodist Health System
Other
Eligibility
18 Years to 25 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Dallas, Texas
Conditions
End Stage Renal Disease
Interventions
ergocalciferol supplementation, placebo
Dietary Supplement · Other
Lead sponsor
Dialysis Clinic, Inc.
Industry
Eligibility
18 Years and older
Enrollment
470 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
12
States / cities
Redding, California • Albany, Georgia • Shreveport, Louisiana + 9 more
Conditions
Congestive Heart Failure, Ischemic Cardiomyopathy
Interventions
Micronutrients
Drug
Lead sponsor
Phoenix VA Health Care System
Federal
Eligibility
18 Years to 89 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Phoenix, Arizona
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D and Sexual Health

NCT01450462
Conditions
Bacterial Vaginosis
Interventions
Vitamin D3 (cholecalciferol), Placebo
Dietary Supplement
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Columbus, Ohio
Not listed Not applicable Interventional Accepts healthy volunteers

HMB Cerebral Palsy Pilot Study

NCT05384951
Conditions
Cerebral Palsy
Interventions
HMB + Vitamin D3
Dietary Supplement
Lead sponsor
Gillette Children's Specialty Healthcare
Other
Eligibility
13 Years to 17 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Saint Paul, Minnesota