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ClinicalTrials.gov public records Last synced Oct 1, 2026, 9:44 AM EDT

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Showing 25–47 of 47 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Standard Dose Vitamin D3 Clear all
Terminated Phase 1Phase 2 Interventional Results available

Phase I/II Calcitriol in Lung Cancer

NCT00794547
View directory record Official record
Conditions
Non Small Cell Lung Cancer
Interventions
Calcitriol
Drug
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
4
States / cities
Ann Arbor, Michigan • Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Dec 12, 2017 · Synced Oct 1, 2026, 9:44 AM EDT
Terminated Phase 1 Interventional

Treatment of Vitamin D Deficiency With Large Bolus Cholecalciferol

NCT04120064
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Cholecalciferol
Drug
Lead sponsor
Parkview Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Pueblo, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Oct 1, 2026, 9:44 AM EDT
Active, not recruiting Phase 2 Interventional Results available

Vitamin D and Physical Activity on Bone Health

NCT01419730
View directory record Official record
Conditions
Bone Metabolism Biomarkers, Bone Mineral Density, Physical Fitness
Interventions
Vitamin D3, Physical Activity
Drug · Behavioral
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
191 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2026
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Not applicable Interventional Results available

Oral Paricalcitol in Kidney Transplant Recipients

NCT00587158
View directory record Official record
Conditions
Transplant; Failure, Kidney, Renal Disease, End Stage, Hyperparathyroidism, Secondary
Interventions
Paricalcitol, Corticosteroid Avoidance Immune Suppression Protocol
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
2
States / cities
Scottsdale, Arizona • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 13, 2013 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Phase 1 Interventional

Liposomal Irinotecan Plus 5-FU / LV Combined With Paricalcitol in Patients With Advanced Pancreatic Cancer Progressed on Gemcitabine-based Therapy

NCT03883919
View directory record Official record
Conditions
Pancreatic Cancer, Pancreas Cancer, Cancer of the Pancreas
Interventions
5-FU, Leucovorin, Liposomal Irinotecan, Paricalcitol, Serum and plasma blood samples, Tumor biopsy
Drug · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 5, 2022 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Early Phase 1 Interventional

Vitamin D Supplementation on 15-Prostaglandin Dehydrogenase Expression in Barrett's Esophagus

NCT01465113
View directory record Official record
Conditions
Short Segment Barrett's Esophagus, Long Segment Barrett's Esophagus
Interventions
Omeprazole, Vitamin D3, upper endoscopy, Metformin
Drug · Procedure
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
3
States / cities
Beachwood, Ohio • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 10, 2016 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Treatment Study of Vitamin D Deficiency in Adolescents

NCT01784029
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D3
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
13 Years to 20 Years
Enrollment
183 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Oct 16, 2018 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Phase 2 Interventional Results available

Prevention of Bone Loss After Pediatric Hematopoietic Cell Transplantation

NCT02074631
View directory record Official record
Conditions
Osteopenia, Osteoporosis
Interventions
Pamidronate, Calcium and vitamin D
Drug
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
1 Year to 20 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
2
States / cities
Minneapolis, Minnesota • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 20, 2024 · Synced Oct 1, 2026, 9:44 AM EDT
Terminated Phase 2 Interventional Results available

Safety & Tolerability of Cinacalcet in Pediatric Patients With Chronic Kidney Disease and Secondary Hyperparathyroidism

NCT01439867
View directory record Official record
Conditions
Chronic Kidney Disease, Hyperparathyroidism, Secondary
Interventions
Cinacalcet hydrochloride, Standard of Care
Drug
Lead sponsor
Amgen
Industry
Eligibility
28 Days to 2189 Days
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
17
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Los Angeles, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2020 · Synced Oct 1, 2026, 9:44 AM EDT
Withdrawn Phase 1Phase 2 Interventional

High Dose Cholecalciferol to Reduce the Incidence of Gestational Diabetes in High Risk Pregnant Women

NCT03037593
View directory record Official record
Conditions
Gestational Diabetes
Interventions
4000 IU vitamin D3
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 1, 2019 · Synced Oct 1, 2026, 9:44 AM 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 1, 2026, 9:44 AM 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 1, 2026, 9:44 AM EDT
Withdrawn Phase 4 Interventional

Sustained Effect of Urticaria Remission With Relatively High Dose Vitamin D Supplementation After Omalizumab Discontinuation

NCT02742805
View directory record Official record
Conditions
Urticaria
Interventions
Vitamin D (4,000 IU/day), Vitamin D (400 IU/day), Omalizumab
Dietary Supplement · Drug
Lead sponsor
Selina Gierer, D.O.
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 1, 2018 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Not applicable Interventional

Effectiveness of High Dose Vitamin D Supplementation in Stage III Colorectal Cancer

NCT02603757
View directory record Official record
Conditions
Colon Cancer, Rectal Cancer
Interventions
cholecalciferol
Dietary Supplement
Lead sponsor
Legacy Health System
Other
Eligibility
18 Years to 99 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
3
States / cities
Gresham, Oregon • Portland, Oregon • Tualatin, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 1, 2020 · Synced Oct 1, 2026, 9:44 AM EDT
Terminated Phase 4 Interventional Results available

Mothers' Own Milk Optimization for Preterm Infants Project (MoMO PIP) Pilot Study

NCT04629534
View directory record Official record
Conditions
Vitamin D Deficiency, Nutritional Deficiency
Interventions
High dose Cholecalciferol, Cholecalciferol
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
0 Days to 45 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 15, 2023 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Phase 2 Interventional Results available

Study Evaluating Changes In Bone Mineral Density (BMD), And Safety Of Rhbmp-2/CPM In Subjects With Decreased BMD

NCT00752557
View directory record Official record
Conditions
Osteoporosis
Interventions
rhBMP-2/CPM injection and bisphosphonates, calcium, and vitamin D (oral bisphosphonate therapy), bisphosphonates, calcium, and vitamin D
Drug
Lead sponsor
Pfizer
Industry
Eligibility
65 Years to 85 Years · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
28
States / cities
Phoenix, Arizona • Tucson, Arizona • Sacramento, California + 15 more
Source: ClinicalTrials.gov public record
Updated Mar 20, 2020 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Phase 1 Interventional

Effect of a Monthly High Dose of Vitamin D3 on Bariatric Surgery Patients

NCT02477956
View directory record Official record
Conditions
Morbid Obesity, Vitamin D Deficiency
Interventions
vitamin D3 (Replesta), vitamin D
Dietary Supplement
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 60 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Jun 23, 2015 · Synced Oct 1, 2026, 9:44 AM EDT
Terminated Phase 2 Interventional Results available

Vitamin D3 Treatment in Pediatric Systemic Lupus Erythematosus

NCT01709474
View directory record Official record
Conditions
Systemic Lupus Erythematosus
Interventions
Vitamin D3 6000 IU, Vitamin D3 400 IU
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
5 Years to 20 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
13
States / cities
Los Angeles, California • Palo Alto, California • San Francisco, California + 9 more
Source: ClinicalTrials.gov public record
Updated Dec 17, 2015 · Synced Oct 1, 2026, 9:44 AM EDT
Not listed Phase 4 Interventional

How Bone is Made in Children Receiving Dialysis

NCT01799317
View directory record Official record
Conditions
Bone Mineralization Defect
Interventions
Vitamin D2
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Years to 21 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
2
States / cities
Loma Linda, California • Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 26, 2013 · Synced Oct 1, 2026, 9:44 AM EDT
Recruiting Phase 3 Interventional

A Trial of Etelcalcetide in Pediatric Participants With Secondary Hyperparathyroidism and Chronic Kidney Disease on Hemodialysis

NCT03633708
View directory record Official record
Conditions
Secondary Hyperparathyroidism, Chronic Kidney Disease
Interventions
Etelcalcetide, Standard of Care
Drug · Other
Lead sponsor
Amgen
Industry
Eligibility
0 Years to 18 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2029
U.S. locations
10
States / cities
Los Angeles, California • Aurora, Colorado • Kansas City, Missouri + 7 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Not applicable Interventional

Vitamin D and Microbiota in Cystic Fibrosis

NCT02589444
View directory record Official record
Conditions
Vitamin D Deficiency, Cystic Fibrosis
Interventions
High-Dose Vitamin D3, Stool Sample, Sputum Sample, Sham Comparator, Blood draw
Dietary Supplement · Other · Procedure
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Oct 1, 2026, 9:44 AM EDT
Completed Phase 2 Interventional Results available

Study of Vitamin D in Untreated Metastatic Colorectal Cancer

NCT01516216
View directory record Official record
Conditions
Metastatic Colorectal Cancer
Interventions
FOLFOX + bevacizumab, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
18
States / cities
Boise, Idaho • Fruitland, Idaho • Meridian, Idaho + 13 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2022 · Synced Oct 1, 2026, 9:44 AM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Cinacalcet in Pediatric Patients With Secondary Hyperparathyroidism (SHPT) and Chronic Kidney Disease (CKD) on Dialysis

NCT02138838
View directory record Official record
Conditions
Chronic Kidney Disease, Secondary Hyperparathyroidism
Interventions
Cinacalcet HCl, Standard of Care
Drug · Dietary Supplement
Lead sponsor
Amgen
Industry
Eligibility
6 Years to 17 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
26
States / cities
Los Angeles, California • Wilmington, Delaware • Atlanta, Georgia + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2020 · Synced Oct 1, 2026, 9:44 AM EDT