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ClinicalTrials.gov public records Last synced Oct 4, 2026, 9:27 PM EDT

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Showing 121–144 of 963 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Vitamin D-3 Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Genetic, Dietary and Environmental Influences on Vitamin D Metabolism

NCT02590614
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
800 IU Vitamin D, Placebo
Dietary Supplement
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 35 Years
Enrollment
412 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 8, 2019 · Synced Oct 4, 2026, 9:27 PM EDT
Not listed Not applicable Interventional

Combined Effects of Diabetes Self-Management Education and Nutritional Supplementation on Visual Function and Retinopathy

NCT04120077
View directory record Official record
Conditions
Diabetes Mellitus, Diabetic Retinopathy
Interventions
EyePromise DVS, EyePromise DVS plus EyePromise EZTears
Dietary Supplement
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
18 Years to 85 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 23, 2021 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Phase 1 Interventional

Vitamin D Regulation of Gut Specific B Cells and Antibodies Targeting Gut Bacteria in Inflammatory Bowel Disease

NCT04828031
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Ulcerative Colitis, Crohn Disease
Interventions
Vitamin D
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Oct 4, 2026, 9:27 PM EDT
Withdrawn Phase 2Phase 3 Interventional

Vitamin D + Telaprevir + Peginterferon + Ribavirin for of Hepatitis C Genotype 1

NCT01890772
View directory record Official record
Conditions
Hepatitis C
Interventions
Telaprevir, Peginterferon alfa-2a, Ribavirin, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Timothy Morgan, MD
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
4
States / cities
Long Beach, California • Minneapolis, Minnesota • Kansas City, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated May 14, 2014 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Phase 1 Interventional Results available

Study to Evaluate Romosozumab in Children and Adolescents With Osteogenesis Imperfecta

NCT04545554
View directory record Official record
Conditions
Osteogenesis Imperfecta
Interventions
Romosozumab, Calcium, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Amgen
Industry
Eligibility
5 Years to 17 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
3
States / cities
Indianapolis, Indiana • Nashville, Tennessee • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Oct 4, 2026, 9:27 PM EDT
Completed No phase listed Observational

Assessment of Influence of Vitamin D on Insulin Secretion and Sensitivity in Obese Teenage Girls

NCT00851396
View directory record Official record
Conditions
Vitamin D Deficiency, Insulin Resistance, Insulin Sensitivity, Obesity
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
13 Years to 18 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 12, 2011 · Synced Oct 4, 2026, 9:27 PM EDT
Terminated No phase listed Observational

Ultraviolet Light Exposure and Immunosuppression in Cutaneous Melanoma

NCT00996827
View directory record Official record
Conditions
Melanoma
Interventions
Not listed
Lead sponsor
New Mexico Cancer Research Alliance
Other
Eligibility
18 Years to 95 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
2
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Jun 18, 2015 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Sulfates in Breastmilk

NCT06203041
View directory record Official record
Conditions
Vitamin D Deficiency, Breast Milk Collection
Interventions
Vitamin D
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
1 Month to 60 Years
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 4, 2026, 9:27 PM EDT
Terminated Phase 2 Interventional

Statin Monotherapy for Treatment of Endocrine Metabolic Disease Risk

NCT03113994
View directory record Official record
Conditions
Spinal Cord Injuries, Osteoporosis, Metabolic Syndrome
Interventions
Rosuvastatin Calcium, Placebo Oral Tablet, Coenzyme Q10, Calcium Carbonate, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Dr. B. Catharine. Craven
Other
Eligibility
18 Years to 60 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioequivalence Study on Vitamin D in Healthy Adults

NCT03552653
View directory record Official record
Conditions
Measure Absorption of Vitamin D in Blood
Interventions
Vitafusion Extra Strength Vitamin D
Dietary Supplement
Lead sponsor
Church & Dwight Company, Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 12, 2018 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Personalized Vitamin D Supplementation in European and African Americans

NCT02362269
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Female only
Enrollment
169 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 1, 2020 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Phase 4 Interventional

Pilot Study Evaluating Doxercalciferol Replacement Therapy in Kidney Transplant Recipients

NCT00889629
View directory record Official record
Conditions
Chronic Kidney Disease, Kidney Transplantation
Interventions
Doxercalciferol, placebo, 25-OH Vitamin D3
Drug
Lead sponsor
Mariana Markell
Other
Eligibility
18 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Feb 22, 2019 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Multi-vitamin Supplement in Adult Females

NCT03828097
View directory record Official record
Conditions
Health, Subjective
Interventions
Experimental supplement, Placebo
Dietary Supplement
Lead sponsor
Auburn University
Other
Eligibility
21 Years to 40 Years · Female only
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 28, 2020 · Synced Oct 4, 2026, 9:27 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Efficacy Of Ergocalciferol In Adults According To BMI

NCT02435771
View directory record Official record
Conditions
Obesity, Vitamin D Deficiency
Interventions
Ergocalciferols
Drug
Lead sponsor
Walter Reed National Military Medical Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 11, 2017 · Synced Oct 4, 2026, 9:27 PM EDT
Withdrawn Phase 3 Interventional

Vitamin D Status in Patients With Severe Sepsis

NCT02684487
View directory record Official record
Conditions
Sepsis, Severe Sepsis, End Organ Damage, Multi Organ Failure
Interventions
vitamin D3, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 5, 2021 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Phase 4 Interventional

Comparison of Absorption of Vitamin D in Cystic Fibrosis

NCT01880346
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Vitamin D Powder, Vitamin D Oil
Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years to 59 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 20, 2015 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Phase 2 Interventional

Pharmacokinetic (PK) and Pharmacodynamic (PD) Study of CD 2027 Spray in Adults With Plaque-type Psoriasis

NCT00763503
View directory record Official record
Conditions
Plaque-type Psoriasis
Interventions
CD 2027
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
3
States / cities
Hot Springs, Arizona • Austin, Texas • Bryan, Texas
Source: ClinicalTrials.gov public record
Updated Feb 18, 2021 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Vitamin D to ENhance TraUma REcovery

NCT05458024
View directory record Official record
Conditions
Musculoskeletal Pain
Interventions
Vitamin D 2, Vitamin D2 Placebo
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 65 Years
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
4
States / cities
Worcester, Massachusetts • St Louis, Missouri • Camden, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 28, 2025 · Synced Oct 4, 2026, 9:27 PM 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 4, 2026, 9:27 PM EDT
Terminated No phase listed Observational Results available

Study to Evaluate Safety of Vitamin D Receptor Activators in Patients Ages 0 to 16 With Chronic Kidney Disease Stage 5 Receiving Peritoneal Dialysis Within Current Clinical Practice

NCT01134315
View directory record Official record
Conditions
Secondary Hyperparathyroidism, End-Stage Renal Disease
Interventions
Paricalcitol, Calcitriol
Drug
Lead sponsor
AbbVie (prior sponsor, Abbott)
Industry
Eligibility
Up to 16 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
18
States / cities
Birmingham, Alabama • Gainesville, Florida • Orlando, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2013 · Synced Oct 4, 2026, 9:27 PM EDT
Not listed Phase 2Phase 3 Interventional

ASCENT: Androgen Independent Prostate Cancer Study of Calcitriol Enhancing Taxotere

NCT00043576
View directory record Official record
Conditions
Prostate Cancer
Interventions
calcitriol, docetaxel
Drug
Lead sponsor
Novacea
Industry
Eligibility
18 Years and older · Male only
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
52
States / cities
Montgomery, Alabama • Scottsdale, Arizona • Tucson, Arizona + 44 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2009 · Synced Oct 4, 2026, 9:27 PM 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 4, 2026, 9:27 PM EDT
Completed Phase 1 Interventional

Vitamin D as a Nutritional Neoadjuvant During Photodynamic Therapy of Basal Cell Carcinoma

NCT03467789
View directory record Official record
Conditions
Basal Cell Carcinoma, Basal Cell Nevus Syndrome
Interventions
Dietary Vitamin D3 pre-treatment, Photodynamic therapy, Serum Maintenance Vitamin D3
Drug · Radiation
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
Not listed
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
2
States / cities
Phoenix, Arizona • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 17, 2024 · Synced Oct 4, 2026, 9:27 PM EDT
Completed Phase 1 Interventional Results available

Clearance of 25-hydroxyvitamin D in Chronic Kidney Disease

NCT02937350
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
D6-25-hydroxyvitamin D3
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 1, 2021 · Synced Oct 4, 2026, 9:27 PM EDT