Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
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.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 5, 2026, 12:29 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 73–96 of 410 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Vitamin D3-Placebo Clear all
Completed Early Phase 1 Interventional Accepts healthy volunteers

Optimization of Blood Levels of 25(OH)-Vitamin D in African Americans

NCT04939792
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D, Placebo, Vitamin D + L-cysteine, L-cysteine
Drug
Lead sponsor
Louisiana State University Health Sciences Center Shreveport
Other
Eligibility
18 Years to 65 Years
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Jun 8, 2023 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy Trial With Zoledronic Acid for the Treatment of Paget's Disease of Bone, Including an Extended Observation Period

NCT00103740
View directory record Official record
Conditions
Paget's Disease of Bone
Interventions
zoledronic acid, placebo to zoledronic acid, Risedronate, Placebo to risedronate, Calcium and vitamin D supplements
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
30 Years and older
Enrollment
185 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2011
U.S. locations
10
States / cities
Tucson, Arizona • Colorado Springs, Colorado • Indianapolis, Indiana + 7 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2012 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 2 Interventional Results available

Vitamin D and Prostate Cancer: A Clinical Study Enrolling Subjects Undergoing Prostatectomy

NCT02726113
View directory record Official record
Conditions
Prostate Cancer
Interventions
cholecalciferol, placebo
Drug · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
19 Years to 90 Years · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
2
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 3, 2019 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 2 Interventional

A Phase 2 Study of an Oral Vitamin D Compound (DP001) in Secondary Hyperparathyroidism in Patients on Hemodialysis

NCT01922843
View directory record Official record
Conditions
Hyperparathyroidism, Secondary, Kidney Failure, Chronic
Interventions
DP001 softgel capsules, Placebo
Drug
Lead sponsor
Deltanoid Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
14
States / cities
Phoenix, Arizona • Tucson, Arizona • Washington D.C., District of Columbia + 11 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2017 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy Trial With Zoledronic Acid for the Treatment of Paget's Disease of Bone, Including an Extended Observation Period

NCT00051636
View directory record Official record
Conditions
Paget's Disease of Bone
Interventions
Zoledronic Acid, Risedronate, Placebo to Risedronate, Placebo to Zoledronic Acid, Calcium and Vitamin D
Drug · Dietary Supplement
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
30 Years and older
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2011
U.S. locations
12
States / cities
Santa Monica, California • Lakewood, Colorado • Boca Raton, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated May 15, 2012 · Synced Oct 5, 2026, 12:29 AM EDT
Active, not recruiting Phase 2Phase 3 Interventional

Setrusumab vs Placebo for Osteogenesis Imperfecta

NCT05125809
View directory record Official record
Conditions
Osteogenesis Imperfecta
Interventions
Setrusumab, Placebo
Biological · Other
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
5 Years to 25 Years
Enrollment
183 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
23
States / cities
Little Rock, Arkansas • Los Angeles, California • Sacramento, California + 20 more
Source: ClinicalTrials.gov public record
Updated Feb 25, 2026 · Synced Oct 5, 2026, 12:29 AM EDT
Active, not recruiting Phase 4 Interventional

Romosozumab Use to Build Skeletal Integrity

NCT05058976
View directory record Official record
Conditions
Osteoporosis, Osteoporosis, Postmenopausal, Osteoporosis Fracture
Interventions
Romosozumab, Placebo, Zoledronic acid, Calcium and Vitamin D
Drug · Dietary Supplement
Lead sponsor
Susan L. Greenspan
Other
Eligibility
65 Years and older · Female only
Enrollment
184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Magnesium and Vitamin D Supplementation and Cardiometabolic Outcomes

NCT03134417
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 27, 2021 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Not applicable Interventional Results available

D Vitamin Intervention in VA

NCT01375660
View directory record Official record
Conditions
Impaired Fasting Glucose, Impaired Glucose Tolerance, Vitamin D Insufficiency
Interventions
Placebo, 50K vitamin D2
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
35 Years to 85 Years · Male only
Enrollment
205 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 6, 2015 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Not applicable Interventional

Photo-Protection Trial (NB-UVB vs. Placebo) in High-risk Hospitalized COVID-19 Patients

NCT04818970
View directory record Official record
Conditions
Covid19, Corona Virus Infection, Autoimmune Diseases, Coagulation Disorder, Blood
Interventions
Narrow Band ultraviolet B-Band Light, non Narrow Band ultraviolet B-Band Light
Device
Lead sponsor
Cytokind, Inc.
Industry
Eligibility
50 Years to 110 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Jun 15, 2022 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Vitamin D and Calcium on Genes in the Colon

NCT00298545
View directory record Official record
Conditions
Colorectal Polyps, Colorectal Adenoma, Adenocarcinoma
Interventions
placebo and Calcitriol, Calcium and Calcitriol
Drug
Lead sponsor
Rockefeller University
Other
Eligibility
48 Years to 72 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 18, 2011 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 2 Interventional Results available

A Study in Adult Patients With Type I, III or IV Osteogenesis Imperfecta Treated With BPS804

NCT03118570
View directory record Official record
Conditions
Osteogenesis Imperfecta, Type I, Osteogenesis Imperfecta Type III, Osteogenesis Imperfecta Type IV
Interventions
setrusumab, Calcium, Vitamin D, zoledronic acid (optional)
Drug · Dietary Supplement
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
18 Years to 75 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
12
States / cities
Birmingham, Alabama • Jacksonville, Florida • Baltimore, Maryland + 9 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2023 · Synced Oct 5, 2026, 12:29 AM EDT
Withdrawn Not applicable Interventional

Vitamin D in Active Tuberculosis (TB) Study

NCT00788320
View directory record Official record
Conditions
Tuberculosis
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
Atlanta VA Medical Center
Federal
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 20, 2012 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D and Muscle Metabolic Function

NCT02221596
View directory record Official record
Conditions
Healthy
Interventions
vitamin D, aerobic training
Dietary Supplement · Other
Lead sponsor
David Travis Thomas
Other
Eligibility
60 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Mar 15, 2018 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Vitamin D HIV Study on Postmenopausal Women

NCT01375010
View directory record Official record
Conditions
HIV
Interventions
Vitamin D3, Placebo, Vitamin Supplements
Drug · Other
Lead sponsor
Columbia University
Other
Eligibility
40 Years to 70 Years · Female only
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 7, 2019 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 2 Interventional Results available

High Dose Vitamin D for Sickle Cell Disease

NCT01331148
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Vitamin D, Placebo
Drug · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
7 Years to 21 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 9, 2022 · Synced Oct 5, 2026, 12:29 AM EDT
Terminated Phase 3 Interventional

A Phase III Study to Investigate if the Study Drug Diamyd Can Preserve Insulin Production and Improve Glycemic Control in Patients Newly Diagnosed With Type 1 Diabetes

NCT05018585
View directory record Official record
Conditions
Type 1 Diabetes Mellitus
Interventions
Recombinant human glutamic acid decarboxylase (rhGAD65) formulated in Alhydrogel®, Colecalciferol 2000 IU, Placebo
Biological · Dietary Supplement
Lead sponsor
Diamyd Medical AB
Industry
Eligibility
12 Years to 28 Years
Enrollment
321 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
13
States / cities
Newport Beach, California • Palo Alto, California • San Diego, California + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

VITAL-DEP: Depression Endpoint Prevention in the VITamin D and OmegA-3 TriaL

NCT01696435
View directory record Official record
Conditions
Depression, Depressive Symptoms, Mood
Interventions
vitamin D3, omega-3 fatty acids (fish oil), Fish oil placebo, Vitamin D placebo
Dietary Supplement · Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
50 Years and older
Enrollment
18,353 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Oct 5, 2026, 12:29 AM EDT
Active, not recruiting Not applicable Interventional

Randomized Trial of Enteral Vitamin D Supplementation in Infants < 28 Weeks Gestational Age or <1000 Grams Birth Weight

NCT05694689
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A Single Wintertime Dose of Vitamin D3 to Prevent Winter Decline in Vitamin D Status in Healthy Adults

NCT01924910
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
250,000 IU cholecalciferol as single, oral dose, Placebo
Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 13, 2017 · Synced Oct 5, 2026, 12:29 AM EDT
Withdrawn Phase 3 Interventional

Therapeutic Benefit of Preoperative Supplemental Vitamin D in Patients Undergoing Major Surgical Procedures.

NCT02138591
View directory record Official record
Conditions
Vitamin d Deficiency
Interventions
Blood draw pre-operatively, Blood draw post-operative Day 1, Blood draw post-operative Day 2
Procedure
Lead sponsor
University of Missouri, Kansas City
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 16, 2017 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Calcium, Vitamin D, Magnesium, and Zinc Absorption in Children

NCT00868738
View directory record Official record
Conditions
Mineral Absorption
Interventions
Vitamin D
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
4 Years to 8 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 2, 2011 · Synced Oct 5, 2026, 12:29 AM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety Study of CD 2027 Spray in Subjects With Plaque-type Psoriasis

NCT00763555
View directory record Official record
Conditions
Psoriasis
Interventions
CD 2027, Calcitriol Vehicle
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
2
States / cities
Fridley, Minnesota • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 23, 2022 · Synced Oct 5, 2026, 12:29 AM 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 5, 2026, 12:29 AM EDT