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ClinicalTrials.gov public records Last synced Oct 16, 2026, 2:30 AM EDT

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Showing 481–504 of 960 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: cholecalciferol (vitamin D) Clear all
Terminated Not applicable Interventional Results available

Vitamin D for Women at Increased Risk of Developing Ovarian, Fallopian, or Primary Peritoneal Cancer

NCT01744821
View directory record Official record
Conditions
Ovarian Cancer, Fallopian Tube Cancer, Primary Peritoneal Cancer
Interventions
Arm A: Vitamin D3 Group, Placebo
Dietary Supplement
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
2
States / cities
Chicago, Illinois • Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 23, 2015 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Vitamin D Deficiency and Vitamin D Supplementation on Glucose Metabolism

NCT00749918
View directory record Official record
Conditions
Prediabetes, Vitamin D Deficiency
Interventions
Cholecalciferol (vitamin D3)
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 20, 2008 · Synced Oct 16, 2026, 2:30 AM EDT
Terminated Phase 2 Interventional

Study of Docetaxel With Doxercalciferol or Placebo for Advanced Prostate Cancer

NCT00582582
View directory record Official record
Conditions
Prostate Cancer
Interventions
Docetaxel plus doxercalciferol, Docetaxel plus placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older · Male only
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 13, 2019 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Phase 2 Interventional

Vitamin D, Insulin Resistance and Inflammation in ESRD

NCT00656032
View directory record Official record
Conditions
End Stage Renal Disease
Interventions
paricalcitol, cinacalcet
Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 11, 2012 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Not applicable Interventional

Correction of Vitamin D Inadequacy in Nursing Home Residents

NCT00204906
View directory record Official record
Conditions
Hypovitaminosis D
Interventions
vitamin D supplementation
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2005
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 5, 2015 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Phase 2 Interventional Results available

Calcitriol, Physical Activity, and Bone Health in Cancer Survivors

NCT00904033
View directory record Official record
Conditions
Breast Neoplasms, Bone and Bones
Interventions
Calcitriol, Exercise, Multivitamin
Drug · Behavioral · Dietary Supplement
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older · Female only
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2018
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 23, 2019 · Synced Oct 16, 2026, 2:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Vascular Function, Insulin Sensitivity, and Vitamin D

NCT01041547
View directory record Official record
Conditions
Insulin Sensitivity, Flow-mediated Dilation, Arterial Stiffness
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 60 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 14, 2014 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Magnesium Supplementation to Prevent Bone Loss

NCT00346658
View directory record Official record
Conditions
Osteoporosis
Interventions
magnesium
Drug
Lead sponsor
University of Tennessee
Other
Eligibility
55 Years to 75 Years
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2006
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 15, 2008 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Status Impacts Inflammation and Risk of Infections During Pregnancy

NCT01815047
View directory record Official record
Conditions
Inflammation, Infection
Interventions
Vitamin D3 Supplementation
Dietary Supplement
Lead sponsor
Cornell University
Other
Eligibility
13 Years to 18 Years · Female only
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2019
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Oct 28, 2019 · Synced Oct 16, 2026, 2:30 AM 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 16, 2026, 2:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy of a Once Daily Calcium and Vitamin D Fortified Food Product to Improve Bone Microarchitecture

NCT02375503
View directory record Official record
Conditions
Bone Alteration, Dietary Modification
Interventions
Calcium/Vitamin D, Placebo
Dietary Supplement
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
17 Years to 42 Years
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated May 15, 2017 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

To Study the Nutri-Genomic Response of Vit-D Supplementation in African-Americans

NCT02802449
View directory record Official record
Conditions
Hypovitaminosis D
Interventions
25 Hydroxy- Vitamin D3 [25 (OH) D3], Placebo
Drug
Lead sponsor
Charles Drew University of Medicine and Science
Other
Eligibility
18 Years to 70 Years
Enrollment
330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 15, 2019 · Synced Oct 16, 2026, 2:30 AM EDT
Withdrawn Not applicable Interventional

The Effects of Active VItamin D on Left Atrial Volume Index

NCT01630408
View directory record Official record
Conditions
Heart Failure
Interventions
Paricalcitol
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 16, 2013 · Synced Oct 16, 2026, 2:30 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Bone Mineral Density, Body Composition and Growth Following Severe Burn Injury

NCT00285090
View directory record Official record
Conditions
Burn, Growth, Malnutrition
Interventions
Calcium,Vitamin D, Calcium, VitaminD, Sugar Pill
Dietary Supplement · Other
Lead sponsor
Kathy Prelack, PhD, RD
Other
Eligibility
4 Years to 18 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 20, 2011 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Not applicable Interventional Results available

Vitamin D Supplementation in Kidney Disease

NCT01229878
View directory record Official record
Conditions
Renal Dialysis, Vitamin D Deficiency
Interventions
Cholecalciferol (Vitamin D)
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
45 Years to 89 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2022
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 22, 2025 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Phase 4 Interventional Results available

Long Term Safety and Efficacy Study of Calcitriol 3 mcg/g Ointment in Pediatric Subjects With Plaque Psoriasis

NCT02125279
View directory record Official record
Conditions
Psoriasis Vulgaris
Interventions
Calcitriol
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
2 Years to 16 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
8
States / cities
Fort Smith, Arkansas • Rogers, Arkansas • Burbank, California + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2021 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Precision Nutrition Impact on Health-Related Behavior Change

NCT04959318
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Professional nutrition counseling, No professional nutrition counseling
Other
Lead sponsor
Madigan Army Medical Center
Federal
Eligibility
18 Years to 45 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Feb 11, 2025 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Muscle Metabolic Function in Older Adults With Different Vitamin D Status Before and After Exercise

NCT02485197
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
7 continuous days of aerobic training
Other
Lead sponsor
David Travis Thomas
Other
Eligibility
65 Years to 75 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Mar 17, 2017 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Phase 4 Interventional Results available

A Study of Zemplar® Injection and Hectorol® Injection on Intestinal Absorption of Calcium in Chronic Kidney Disease

NCT00257920
View directory record Official record
Conditions
Chronic Kidney Disease, Stage 5, Secondary Hyperparathyroidism
Interventions
Zemplar® injection, Hectorol® injection
Drug
Lead sponsor
Abbott
Industry
Eligibility
20 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
2
States / cities
Bellevue, Nebraska • Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 24, 2009 · Synced Oct 16, 2026, 2:30 AM EDT
Completed No phase listed Observational

A Registry for Participants With Chronic Hypoparathyroidism

NCT01922440
View directory record Official record
Conditions
Hypoparathyroidism
Interventions
No intervention
Other
Lead sponsor
Takeda
Industry
Eligibility
Not listed
Enrollment
1,339 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2026
U.S. locations
54
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 42 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Phase 4 Interventional Results available

The Effect of Paricalcitol on Creatinine Filtration, Secretion and Glomerular Filtration Rate

NCT01163162
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
Paricalcitol
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 21, 2013 · Synced Oct 16, 2026, 2:30 AM EDT
Recruiting Early Phase 1 Interventional

Triamcinolone With Vitamin D Synergistic Efficacy in Psoriasis

NCT04036188
View directory record Official record
Conditions
Plaque Psoriasis, Vitamin D3
Interventions
Triamcinolone, Vitamin D3, Placebo
Drug · Dietary Supplement
Lead sponsor
Wright State University
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Fairborn, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Effect of Vitamin D on PFS in Indolent Non-Hodgkin's Lymphoma

NCT03078855
View directory record Official record
Conditions
Follicular Lymphoma, Small Lymphocytic Lymphoma, Marginal Zone Lymphoma, Mucosal-Associated Lymphoid Tissue Lymphoma
Interventions
Vitamin D, Rituximab, Placebo
Dietary Supplement · Biological · Other
Lead sponsor
Jonathan Friedberg
Other
Eligibility
18 Years and older
Enrollment
211 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
7
States / cities
Miami, Florida • Atlanta, Georgia • Iowa City, Iowa + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2024 · Synced Oct 16, 2026, 2:30 AM EDT
Completed Not applicable Interventional

Effects of Oral Cholecalciferol (Vitamin D3) on Bone Health, Neuromuscular Function, and Quality of Life in Adults With Chronic Kidney Disease

NCT00511225
View directory record Official record
Conditions
End Stage Renal Disease
Interventions
cholecalciferol, placebo
Dietary Supplement
Lead sponsor
Creighton University
Other
Eligibility
19 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jul 3, 2012 · Synced Oct 16, 2026, 2:30 AM EDT