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ClinicalTrials.gov public records Last synced Oct 8, 2026, 4:14 PM EDT

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Showing 73–96 of 549 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: vitamin D3 (Replesta) Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Different Vitamin D Preparations & FGF23 in Humans

NCT00957879
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Ergocalciferol, Calcitriol
Dietary Supplement
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 19, 2012 · Synced Oct 8, 2026, 4:14 PM EDT
Terminated Phase 4 Interventional

Clinical Effects of Vitamin D Repletion in Patients With Parkinson's Disease

NCT00571285
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Vitamin D3, Vitamin D3 - high dose, Placebo
Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years to 89 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2015
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 24, 2017 · Synced Oct 8, 2026, 4:14 PM EDT
Terminated Phase 2 Interventional Results available

Vitamin D to Prevent Severe Asthma Exacerbations (Vit-D-Kids Asthma)

NCT02687815
View directory record Official record
Conditions
Asthma
Interventions
vitamin D3 4000 IU, Placebo
Drug
Lead sponsor
Juan Celedon, MD
Other
Eligibility
6 Years to 16 Years
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
7
States / cities
San Francisco, California • Denver, Colorado • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 12, 2021 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Phase 2 Interventional Results available

Vitamin D Supplementation and Acute Respiratory Infection in Older Long-Term Care Residents

NCT01102374
View directory record Official record
Conditions
Respiratory Infection
Interventions
High Dose Vitamin D, Standard Dose Vitamin D, Placebo, Usual Care
Drug · Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
60 Years and older
Enrollment
107 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 21, 2017 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety of Vitamin D Supplementation in Older Persons

NCT00681590
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
cholecalciferol (vitamin D)
Dietary Supplement
Lead sponsor
University of Miami
Other
Eligibility
65 Years to 95 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 26, 2017 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Phase 2 Interventional Results available

Vitamin D3 for Aromatase Inhibitor Induced Arthralgias

NCT00867217
View directory record Official record
Conditions
Breast Cancer
Interventions
High Dose Vitamin D, Placebo, Standard Dose Vitamin D3, Letrozole 2.5mg
Dietary Supplement · Drug
Lead sponsor
Qamar Khan
Other
Eligibility
18 Years and older · Female only
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
2
States / cities
Westwood, Kansas • Wichita, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 9, 2018 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CLA and Vitamin D on Protein Turnover

NCT03115775
View directory record Official record
Conditions
Protein
Interventions
Conjugated linoleic acid, Vitamin D, Conjugated linoleic acid and Vitamin D, Corn oil (placebo)
Dietary Supplement · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
65 Years to 85 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 21, 2019 · Synced Oct 8, 2026, 4:14 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 8, 2026, 4:14 PM EDT
Active, not recruiting Early Phase 1 Interventional

Temporal Profile of Serum Vitamin D Levels in Foot and Ankle Fusion Surgery

NCT04772196
View directory record Official record
Conditions
Ankle Arthrodesis, MTP Arthrodesis
Interventions
Vitamin D3
Drug
Lead sponsor
Prisma Health-Midlands
Other
Eligibility
18 Years to 99 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
2
States / cities
Charleston, South Carolina • Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D3 Supplementation Pilot Study

NCT01546103
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Cholecalciferol
Dietary Supplement
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
12 Years to 17 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 23, 2013 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Preventing Health Disparities During Pregnancy Through Vitamin D Supplementation

NCT01932788
View directory record Official record
Conditions
Vitamin D3 Deficiency
Interventions
Vitamin D3 4000 IU in gummy form, Placebo gummy vitamin
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
342 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 21, 2018 · Synced Oct 8, 2026, 4:14 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 8, 2026, 4:14 PM EDT
Not listed Not applicable Interventional

Lifestyle Intervention Program for Cognitive Impairment

NCT02741804
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
BBH-1001 Brain Health Supplement, Lifestyle Intervention, Brain Health Placebo
Dietary Supplement · Other
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
55 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 27, 2016 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Supplementation in Warfighters

NCT02954549
View directory record Official record
Conditions
Vitamin D Deficiency Disease
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Madigan Army Medical Center
Federal
Eligibility
18 Years and older
Enrollment
131 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated May 10, 2019 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Phase 2 Interventional Results available

Intralesional Vitamin D Injection for Treatment of Common Warts

NCT04278573
View directory record Official record
Conditions
Warts
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
Stephen P. Merry
Other
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 30, 2024 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Nutritional Intervention for Age-related Muscular Function and Strength Losses-Study 2

NCT02043171
View directory record Official record
Conditions
Sarcopenia
Interventions
Placebo, HMB plus Vitamin D, Non-Exercise, Exercise
Dietary Supplement · Drug · Behavioral
Lead sponsor
Metabolic Technologies Inc.
Industry
Eligibility
60 Years and older
Enrollment
238 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Ames, Iowa
Source: ClinicalTrials.gov public record
Updated Feb 11, 2019 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Phase 4 Interventional Results available

Vitamin D Plus Fluticasone Propionate

NCT01103934
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
Vitamin D3, Placebo, Fluticasone Propionate
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 45 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 9, 2014 · Synced Oct 8, 2026, 4:14 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 8, 2026, 4:14 PM EDT
Completed Not applicable Interventional

Differential Effects of Ergocalciferol and Cholecalciferol Therapies in Chronic Kidney Disease

NCT01835691
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
Vitamin D2 (ergocalciferol), Vitamin D3 (cholecalciferol)
Dietary Supplement
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 19, 2017 · Synced Oct 8, 2026, 4:14 PM EDT
Active, not recruiting Phase 2 Interventional

RANKL Inhibition and Mammographic Breast Density

NCT04067726
View directory record Official record
Conditions
Dense Breasts
Interventions
Denosumab, Placebo, Calcium, Vitamin D3, Core needle biopsy, Blood draw
Drug · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
40 Years and older · Female only
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Phase 2 Interventional Results available

Correction of Vitamin D Levels and Its Effect on Insulin Resistance and Weight Gain in Obese Youth

NCT02168660
View directory record Official record
Conditions
Obesity, Insulin Resistance, Vitamin D Deficiency
Interventions
Vitamin D3
Drug
Lead sponsor
Perrin C White, MD
Other
Eligibility
6 Years to 17 Years
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 9, 2019 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Efficacy of Daily Vitamin D3 Supplementation in Normal Weight Adolescents

NCT01058720
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
12 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 1, 2016 · Synced Oct 8, 2026, 4:14 PM EDT
Completed Not applicable Interventional

Vitamin D Reabsorption in Adolescents and Young Adults With HIV Infection

NCT00490412
View directory record Official record
Conditions
HIV Infections
Interventions
Vitamin D supplement, Placebo
Dietary Supplement · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 24 Years
Enrollment
207 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
14
States / cities
Los Angeles, California • San Francisco, California • Washington D.C., District of Columbia + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 28, 2017 · Synced Oct 8, 2026, 4:14 PM EDT
Terminated Phase 2 Interventional

Cholecalciferol in Treating Patients With Acute Myeloid Leukemia Undergoing Intensive Induction Chemotherapy

NCT01521936
View directory record Official record
Conditions
Adult Acute Megakaryoblastic Leukemia (M7), Adult Acute Monoblastic Leukemia (M5a), Adult Acute Monocytic Leukemia (M5b), Adult Acute Myeloblastic Leukemia With Maturation (M2), Adult Acute Myeloblastic Leukemia Without Maturation (M1), Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities, Adult Acute Myeloid Leukemia With Del(5q), Adult Acute Myeloid Leukemia With Inv(16)(p13;q22), Adult Acute Myeloid Leukemia With t(16;16)(p13;q22), Adult Acute Myeloid Leukemia With t(8;21)(q22;q22), Adult Acute Myelomonocytic Leukemia (M4), Adult Erythroleukemia (M6a), Adult Pure Erythroid Leukemia (M6b), Untreated Adult Acute Myeloid Leukemia
Interventions
cholecalciferol, pharmacological study, laboratory biomarker analysis
Dietary Supplement · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 19, 2015 · Synced Oct 8, 2026, 4:14 PM EDT