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ClinicalTrials.gov public records Last synced Oct 14, 2026, 5:35 PM EDT

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Showing 289–312 of 553 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Vitamin D3, Cholecalciferol Clear all
Completed Phase 2 Interventional

Immune Mechanisms of Vitamin D to Reduce Chronic Pain After Burn

NCT05619289
View directory record Official record
Conditions
Burn Injury, Chronic Pain
Interventions
Ergocalciferol, Placebo
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 2 Interventional Results available

Personalized Treatment Algorithms for Difficult-to-treat Asthma

NCT04179461
View directory record Official record
Conditions
Asthma in Children
Interventions
Cholecalciferol, antihistamine, Azithromycin, emollient cream, Fluticasone Propionate, Asthma Controller Medication
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
6 Years to 17 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 20, 2021 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 3 Interventional Results available

Vitamin D to Improve Outcomes by Leveraging Early Treatment

NCT03096314
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Vitamin D Deficiency, Critical Illness
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
1,358 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
47
States / cities
Fresno, California • Los Angeles, California • Sacramento, California + 34 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2020 · Synced Oct 14, 2026, 5:35 PM EDT
Recruiting Phase 2 Interventional

Impact of Vitamin D Supplementation on the Rate of Pathologic Complete Response in Vitamin D Deficient Patients

NCT04677816
View directory record Official record
Conditions
Triple Negative Breast Cancer, Vitamin D Deficiency, Invasive Breast Cancer
Interventions
Standard of Care Neoadjuvant Chemotherapy (NAC), Vitamin D3, Drug Diary
Drug · Dietary Supplement · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 14, 2026, 5:35 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

Vitamin D Status, Disease Specific and Quality of Life Outcomes in Patients With Cutaneous Lupus

NCT01498406
View directory record Official record
Conditions
Cutaneous Lupus Erythematosus
Interventions
vitamin D
Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 20, 2013 · Synced Oct 14, 2026, 5:35 PM EDT
Withdrawn Phase 2Phase 3 Interventional

Vitamin D + Telaprevir + Peginterferon + Ribavirin for of Hepatitis C Genotype 1

NCT01890772
View directory record Official record
Conditions
Hepatitis C
Interventions
Telaprevir, Peginterferon alfa-2a, Ribavirin, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Timothy Morgan, MD
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
4
States / cities
Long Beach, California • Minneapolis, Minnesota • Kansas City, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated May 14, 2014 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Clinical Study on the Bioequivalence of Vitamin D in Healthy Adults

NCT03552666
View directory record Official record
Conditions
Bioequivalence of Vitamin D in Healthy Adults
Interventions
vitamin D3
Dietary Supplement
Lead sponsor
Church & Dwight Company, Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 12, 2018 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 1Phase 2 Interventional

Study of DN101 and Taxotere in Patients With Advanced Non-Small Cell Lung Cancer

NCT00066885
View directory record Official record
Conditions
Carcinoma, Non-Small-Cell Lung
Interventions
calcitriol + docetaxel
Drug
Lead sponsor
Novacea
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
11
States / cities
Berkeley, California • Vallejo, California • Denver, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated May 7, 2007 · Synced Oct 14, 2026, 5:35 PM EDT
Terminated Phase 2 Interventional Results available

Study to Assess Prevention of Oxaliplatin-induced Neurotoxicity Through Vitamin D Pathway

NCT01499940
View directory record Official record
Conditions
Neurotoxicity
Interventions
Vitamin D3
Drug
Lead sponsor
Gerald Higa, PharmD.
Other
Eligibility
18 Years to 90 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Nov 10, 2021 · Synced Oct 14, 2026, 5:35 PM EDT
Terminated Phase 2 Interventional Results available

High-Dose Cholecalciferol in Treating Patients Receiving Combination Chemotherapy and Bevacizumab as First-Line Therapy For Metastatic Colorectal Cancer

NCT01198548
View directory record Official record
Conditions
Stage IV Colon Cancer, Stage IV Rectal Cancer
Interventions
leucovorin calcium, bevacizumab, cholecalciferol, fluorouracil, oxaliplatin, pharmacological study
Drug · Biological · Dietary Supplement + 1 more
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 79 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jul 21, 2014 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 4 Interventional

Pilot Study Evaluating Doxercalciferol Replacement Therapy in Kidney Transplant Recipients

NCT00889629
View directory record Official record
Conditions
Chronic Kidney Disease, Kidney Transplantation
Interventions
Doxercalciferol, placebo, 25-OH Vitamin D3
Drug
Lead sponsor
Mariana Markell
Other
Eligibility
18 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Feb 22, 2019 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 4 Interventional Results available

Vitamin D and Coronary Calcification Study

NCT00752102
View directory record Official record
Conditions
Chronic Kidney Disease, Vitamin D Deficiency, Coronary Calcification, Disorders of Calcium and Bone Metabolism
Interventions
Calcitriol (Rocaltrol®), Paricalcitol
Drug
Lead sponsor
Joslin Diabetes Center
Other
Eligibility
25 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 8, 2017 · Synced Oct 14, 2026, 5:35 PM EDT
Terminated Phase 2 Interventional Results available

Oral Calcitriol With Ketoconazole in CRPC

NCT03261336
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Feb 8, 2021 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigation of the Effect of BONISTEIN(R) Bone Blend on Bone Mineral Density/Content and Biomarkers of Bone Health

NCT00698984
View directory record Official record
Conditions
Osteoporosis
Interventions
BONISTEIN(R) bone blend, Placebo
Dietary Supplement
Lead sponsor
dsm-firmenich Switzerland AG
Industry
Eligibility
45 Years to 55 Years · Female only
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 16, 2009 · Synced Oct 14, 2026, 5:35 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Vitamin D and Omega-3 Adiposity Trial (VITAL Adiposity)

NCT01785004
View directory record Official record
Conditions
Adiposity
Interventions
Vitamin D3 (cholecalciferol), 2000 IU per day, omega-3 fatty acids (fish oil)
Dietary Supplement · Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
50 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 13, 2021 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 4 Interventional

A Randomized Phase IV Control Trial of Single High Dose Oral Vitamin D3 in Pediatric Patients Undergoing HSCT

NCT03176849
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Nov 17, 2020 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Not applicable Interventional

Vitamin D, Cardiovascular Disease, and African Americans

NCT01655810
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jun 5, 2020 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Not applicable Interventional

Identifying Vitamin D Deficiency in Very Low Birth Weight Infant (VLBW) Infants Part 2

NCT01363167
View directory record Official record
Conditions
Infant, Very Low Birth Weight, Calcium Deficiency, Vitamin D Deficiency
Interventions
400 IU Cholecalciferol- Vitamin D Daily
Dietary Supplement
Lead sponsor
Medical University of South Carolina
Other
Eligibility
1 Day to 3 Days
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
2
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 24, 2014 · Synced Oct 14, 2026, 5:35 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Effect Of Vitamin D On Measures Of Bone Health And Gene Expression

NCT01696409
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
400 IU vitamin D3, 2000 IU vitamin D3
Dietary Supplement
Lead sponsor
Boston University
Other
Eligibility
18 Years to 70 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 4, 2017 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Not applicable Interventional

DNA Changes That Affect Vitamin D Metabolism in Patients With Colorectal Cancer Receiving Vitamin D Supplements

NCT00550563
View directory record Official record
Conditions
Colorectal Cancer
Interventions
cholecalciferol, polymerase chain reaction, polymorphism analysis, protein expression analysis, reverse transcriptase-polymerase chain reaction, western blotting, high performance liquid chromatography, laboratory biomarker analysis, pharmacological study, adjuvant therapy, immunoscintigraphy
Dietary Supplement · Genetic · Other + 1 more
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 120 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 4, 2017 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Not applicable Interventional Results available

A Trial of Vitamin D Therapy in Patients With Heart Failure

NCT01125436
View directory record Official record
Conditions
Heart Failure
Interventions
Cholecalciferol
Dietary Supplement
Lead sponsor
Case Western Reserve University
Other
Eligibility
50 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 10, 2022 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Vitamin D, Glucose Control and Insulin Sensitivity in African-Americans

NCT00784511
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
cholecalciferol, microcrystalline cellulose
Dietary Supplement · Other
Lead sponsor
Tufts University
Other
Eligibility
40 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 14, 2014 · Synced Oct 14, 2026, 5:35 PM EDT
Terminated Early Phase 1 Interventional

Maintenance Dosing of Vitamin D in Crohn's Disease

NCT03615378
View directory record Official record
Conditions
Crohns Disease, Vitamin D Deficiency
Interventions
5000 IU D3, 1000 IU D3, Placebo
Dietary Supplement
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 24, 2019 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Not applicable Interventional

Serum 25-hydroxy Vitamin D [25(OH)D] Levels, Supplemental Vitamin D, and Parathyroid Hormone Levels in Premature Infants

NCT01469650
View directory record Official record
Conditions
Premature Infants
Interventions
cholecalciferal, cholecalciferol
Dietary Supplement
Lead sponsor
University of Nebraska
Other
Eligibility
23 Weeks to 32 Weeks
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 6, 2023 · Synced Oct 14, 2026, 5:35 PM EDT