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ClinicalTrials.gov public records Last synced Oct 14, 2026, 6:31 AM EDT

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Showing 145–168 of 437 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Vitamin D placebo Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Resveratrol for the Prevention of Bone Loss in Postmenopausal Women

NCT06250283
View directory record Official record
Conditions
Low Bone Mass
Interventions
Resveratrol, Placebo
Dietary Supplement
Lead sponsor
University of Delaware
Other
Eligibility
Female only
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 14, 2026, 6:31 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 14, 2026, 6:31 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Analysis of Response of Subjects With Atopic Dermatitis or Psoriasis to Oral Vitamin D3

NCT00789880
View directory record Official record
Conditions
Atopic Dermatitis, Psoriasis
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
3
States / cities
San Diego, California • Denver, Colorado • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 12, 2017 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Needs of Early Adolescent Children

NCT00931580
View directory record Official record
Conditions
Healthy
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
University of Georgia
Other
Eligibility
9 Years to 13 Years
Enrollment
323 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
3
States / cities
Athens, Georgia • Indianapolis, Indiana • West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 25, 2015 · Synced Oct 14, 2026, 6:31 AM EDT
Not listed Phase 4 Interventional

Vitamin D Augmentation of Tekturna (Aliskiren) in Hypertension

NCT01472796
View directory record Official record
Conditions
Hypertension
Interventions
Vitamin D (cholecalciferol), Tekturna(Aliskiren) plus placebo
Dietary Supplement · Drug
Lead sponsor
Wayne State University
Other
Eligibility
30 Years to 74 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 16, 2011 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 2 Interventional

Vitamin D to Slow Progression of Knee Osteoarthritis

NCT00306774
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
Vitamin D (cholecalciferol), Placebo
Dietary Supplement
Lead sponsor
Tufts Medical Center
Other
Eligibility
45 Years to 90 Years
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 23, 2011 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Randomized Controlled Trial of Vitamin D3 in Diabetic Kidney Disease

NCT00552409
View directory record Official record
Conditions
Diabetes Mellitus, Chronic Kidney Disease, Diabetic Kidney Disease
Interventions
Cholecalciferol, Placebo
Dietary Supplement
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 28, 2014 · Synced Oct 14, 2026, 6:31 AM EDT
Withdrawn Phase 1 Interventional

A Pilot Study on the Effect of Vitamin D Treatment in Patients With Statin-Associated Myalgia

NCT01274104
View directory record Official record
Conditions
Hyperlipidemia
Interventions
Vitamin D3, Placebo
Dietary Supplement · Other
Lead sponsor
Avera McKennan Hospital & University Health Center
Other
Eligibility
18 Years to 88 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Sioux Falls, South Dakota
Source: ClinicalTrials.gov public record
Updated Apr 22, 2015 · Synced Oct 14, 2026, 6:31 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Vitamin K to Slow Progression of Dyslipidemia and Diabetes Risk (Vita-K 'n' Kids Study II)

NCT02959762
View directory record Official record
Conditions
Obesity, Insulin Resistance, Obesity in Diabetes, Nutritional and Metabolic Diseases, Hyperlipidemia, Hyperglycemia, Cardiovascular Diseases
Interventions
Placebo-Control, Low-Dose Vitamin K2 (menaquinone-7; 45-mcg/d), High-Dose Vitamin K2 (menaquinone-7; 90 mcg/d)
Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
8 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 20, 2019 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Improving the Understanding of the Response to Vitamin D Supplementation

NCT01465178
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
cholecalciferol, Placebo
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
50 Years to 100 Years · Female only
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 25, 2016 · Synced Oct 14, 2026, 6:31 AM 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, 6:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Vitamin D Supplementation During Pregnancy on Clinical Outcomes and Immune Function

NCT01417351
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
400 IU vitamin D3, 2,000 IU Vitamin D3
Dietary Supplement
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 45 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
2
States / cities
Davis, California • Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2013 · Synced Oct 14, 2026, 6:31 AM EDT
Suspended Phase 2 Interventional

A Study of Gemcitabine ± Erlotinib and DN-101 Versus Gemcitabine ± Erlotinib and Placebo in Patients With Advanced Pancreatic Cancer

NCT00536770
View directory record Official record
Conditions
Pancreatic Cancer
Interventions
placebo + gemcitabine + erlotinib, Placebo + gemcitabine, calcitriol + gemcitabine, calcitriol + gemcitabine + erlotinib
Drug
Lead sponsor
Novacea
Industry
Eligibility
18 Years and older
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2007
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 6, 2007 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Role of Vitamin D in Menopause: Relationship to Menopausal Symptoms in Body Composition

NCT01141972
View directory record Official record
Conditions
Hot Flushes, Menopause, Premature, Obesity, Vitamin D Deficiency
Interventions
Vitamin D, Placebo
Dietary Supplement · Other
Lead sponsor
Kaiser Permanente
Other
Eligibility
40 Years to 60 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated May 30, 2013 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 1 Interventional

Acute Effects of Canagliflozin, a Sodium Glucose Co-Transporter 2 (SGLT2) Inhibitor on Bone Metabolism in Healthy Volunteers

NCT02404870
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Placebo, Canagliflozin
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2025 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 4 Interventional Results available

A Study to Learn if Recombinant Human Parathyroid Hormone [rhPTH(1-84)] Can Improve Symptoms and Metabolic Control in Adults With Hypoparathyroidism (BALANCE)

NCT03324880
View directory record Official record
Conditions
Hypoparathyroidism
Interventions
rhPTH (1-84), Placebo
Biological
Lead sponsor
Shire
Industry
Eligibility
18 Years to 85 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
6
States / cities
Chicago, Illinois • Detroit, Michigan • Rochester, Minnesota + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2023 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Effects of Vitamin D Supplementation on Strength, Bone Density, and Injury Risk in Collegiate Athletes

NCT03151174
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D 10000 UNT, Vitamin D 5000 UNT
Drug
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
18 Years to 30 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 15, 2024 · Synced Oct 14, 2026, 6:31 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

VITamin D and OmegA-3 TriaL: Effects on Mammographic Density and Breast Tissue

NCT02239874
View directory record Official record
Conditions
Benign Breast Disease
Interventions
Vitamin D and fish oil placebo, Fish oil and vitamin D placebo, Vitamin D placebo and fish oil placebo, Vitamin D and fish oil
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
55 Years to 67 Years · Female only
Enrollment
3,894 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 7, 2022 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Not applicable Interventional

Prevention of Secondary Hyperparathyroidism With Vitamin D in Stage II/III Chronic Kidney Disease

NCT00781417
View directory record Official record
Conditions
Kidney Disease
Interventions
Vitamin D, Placebo
Dietary Supplement · Other
Lead sponsor
Atlanta VA Medical Center
Federal
Eligibility
18 Years to 85 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 7, 2012 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 2 Interventional Results available

Study of Vitamin D and Effect on Heart Disease and Insulin Resistance

NCT01093417
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV), Vitamin D Deficiency, HIV Infections
Interventions
Vitamin D, Placebo
Drug · Other
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 14, 2016 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Not applicable Interventional Results available

The Effect of Hypovitaminosis D and Vitamin D Supplementation on Fracture Nonunion Rates

NCT01691833
View directory record Official record
Conditions
Hypovitaminosis D
Interventions
Vitamin D, Placebo
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 14, 2022 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Vitamin D and Residual Beta-Cell Function in Type 1 Diabetes

NCT03046927
View directory record Official record
Conditions
Type 1 Diabetes
Interventions
Ergocalciferol, Placebo
Drug · Other
Lead sponsor
Benjamin U. Nwosu, MD
Other
Eligibility
10 Years to 21 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 10, 2024 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 2 Interventional Results available

Activated Vitamin D for the Prevention and Treatment of Acute Kidney Injury

NCT02962102
View directory record Official record
Conditions
Critically Ill, Acute Kidney Injury
Interventions
Calcifediol, Calcitriol, Placebos
Drug
Lead sponsor
David Leaf
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Oct 14, 2026, 6:31 AM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate Oral Salmon Calcitonin in the Treatment of Osteoporosis in Postmenopausal Women Taking Calcium and Vitamin D

NCT00525798
View directory record Official record
Conditions
Osteoporosis
Interventions
SMC021 Oral calcitonin, SMC021 Placebo
Drug
Lead sponsor
Nordic Bioscience A/S
Industry
Eligibility
55 Years to 85 Years · Female only
Enrollment
4,665 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
3
States / cities
Gainesville, Georgia • Detroit, Michigan • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 29, 2012 · Synced Oct 14, 2026, 6:31 AM EDT