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ClinicalTrials.gov public records Last synced Oct 21, 2026, 9:41 AM EDT

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Showing 313–336 of 604 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Dietary Deficiency Clear all
Terminated Phase 3 Interventional Results available

Effect of Vitamin D Supplement on Inflammation Markers in High-Risk Cardiovascular Patients With Chronic Kidney Disease

NCT01012414
View directory record Official record
Conditions
Coronary Artery Disease, Chronic Kidney Disease, Hypovitaminosis D, Secondary Hyperparathyroidism
Interventions
paricalcitol, placebo
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 20, 2014 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Supplementation in Overweight/Obese African American Adults and Youth (D-SUNNY)

NCT01583621
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Cholecalciferol
Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
13 Years to 45 Years
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Not applicable Interventional

Examining the Impact of High-protein Oral Supplement on Protein Status of Adults on Peritoneal Dialysis

NCT06154161
View directory record Official record
Conditions
Renal Failure, Protein-Energy Malnutrition
Interventions
Whey protein supplement
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
2
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 4, 2025 · Synced Oct 21, 2026, 9:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Vitamin D and Functional Outcomes After Total Hip Arthroplasty (THA)

NCT01397383
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Not listed
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
40 Years and older
Enrollment
219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 20, 2017 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Vitamin D and Arterial Stiffness in Elderly

NCT03649802
View directory record Official record
Conditions
Vitamin D Deficiency, Arterial Stiffness
Interventions
Low dose vitamin D3, High dose vitamin D3
Dietary Supplement
Lead sponsor
Texas Tech University Health Sciences Center
Other
Eligibility
65 Years to 89 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Mar 21, 2022 · Synced Oct 21, 2026, 9:41 AM EDT
Completed No phase listed Observational

Pathogenesis of Compromised Bone Quality and Mechanics in Chronic Kidney Disease

NCT03626246
View directory record Official record
Conditions
Chronic Kidney Disease, End Stage Kidney Disease, Chronic Kidney Disease Mineral and Bone Disorder, Renal Osteodystrophy, Secondary Hyperparathyroidism
Interventions
Kidney disease
Other
Lead sponsor
Columbia University
Other
Eligibility
40 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 13, 2021 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Phase 2 Interventional Results available

Study of KRN23 (Burosumab), a Recombinant Fully Human Monoclonal Antibody Against Fibroblast Growth Factor 23 (FGF23), in Pediatric Subjects With X-linked Hypophosphatemia (XLH)

NCT02163577
View directory record Official record
Conditions
X-linked Hypophosphatemia
Interventions
burosumab
Biological
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
5 Years to 12 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
4
States / cities
San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 1 more
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Controlled Trial of Prenatal Vitamin D3 Supplementation to Prevent Vitamin D Deficiency in Mothers and Their Infants

NCT00610688
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Prenatal Vitamin, Cholecalciferol (Vitamin D3)
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
192 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 19, 2021 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Phase 2 Interventional Results available

Thiamine as a Renal Protective Agent in Septic Shock

NCT03550794
View directory record Official record
Conditions
Sepsis, Kidney Injury, Thiamine Deficiency
Interventions
Thiamine Hydrochloride, Placebo
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
4
States / cities
Boston, Massachusetts • Manhasset, New York • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Oct 21, 2026, 9:41 AM EDT
Completed No phase listed Observational

Vitamin D Deficiency in Obese Adolescent Girls and Influence of Vitamin D on Insulin Secretion and Sensitivity

NCT00850694
View directory record Official record
Conditions
Vitamin D Deficiency, Obesity, Insulin Resistance
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
10 Years to 18 Years · Female only
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 10, 2017 · Synced Oct 21, 2026, 9:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study to Assess the Use of a Simple Lab Test to Screen for Rickets in Children

NCT00502866
View directory record Official record
Conditions
Rickets
Interventions
Not listed
Lead sponsor
Agency for Healthcare Research and Quality (AHRQ)
Federal
Eligibility
6 Months to 15 Months
Enrollment
246 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 8, 2014 · Synced Oct 21, 2026, 9:41 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 21, 2026, 9:41 AM EDT
Completed Phase 2 Interventional Results available

High Dose Intravenous Thiamine for the Prevention of Delirium in Allogeneic Hematopoietic Stem Cell Transplantation

NCT03263442
View directory record Official record
Conditions
Hematopoietic Stem Cell Transplantation, Delirium, Thiamine Deficiency
Interventions
Thiamine, Normal saline
Drug
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 19, 2021 · Synced Oct 21, 2026, 9:41 AM EDT
Active, not recruiting Not applicable Interventional

NutriCare Plus a Medically Tailored Meal Intervention Among Patients With Lung Cancer

NCT04986670
View directory record Official record
Conditions
Lung Cancer, Small Cell, Lung Cancer Metastatic, Lung Cancer Recurrent, Treatment Side Effects, Lung Cancer, Non-small Cell, Nutritional Imbalance
Interventions
Nutritional Counseling, Medically Tailored Meals (MTMs), Nutrition Prescription, Nutrition Assessment, Nutrition Toolkit, Monthly Emails
Behavioral · Other
Lead sponsor
Tufts University
Other
Eligibility
18 Years to 100 Years
Enrollment
299 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
4
States / cities
Boston, Massachusetts • Columbus, Ohio • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Phase 1Phase 2 Interventional Results available

A Repeated Study of KRN23 in Adults With X-Linked Hypophosphatemia

NCT01340482
View directory record Official record
Conditions
X-linked Hypophosphatemia
Interventions
KRN23
Drug
Lead sponsor
Kyowa Kirin Co., Ltd.
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
5
States / cities
San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2024 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Phase 3 Interventional

Hepatic Dysfunction, Vitamin D Status, and Glycemic Control in Diabetes

NCT02132442
View directory record Official record
Conditions
Type 2 Diabetes, Nonalcoholic Fatty Liver Disease, Vitamin D Deficiency
Interventions
Ergocalciferol, placebo
Dietary Supplement
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
10 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 10, 2017 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Vitamin D Levels Following Topical Application of Vitamin D Ointment

NCT02676674
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Dose 1, Dose 2
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 1, 2019 · Synced Oct 21, 2026, 9:41 AM EDT
Completed No phase listed Observational

Low Dose Vitamin C in Burns >20% Compared to Previous Studies With High Dose Vitamin C

NCT05612867
View directory record Official record
Conditions
Burns, Ascorbic Acid Deficiency, Burn Shock, Burn Degree Second, Burn Degree Third, Fluid and Electrolyte Imbalance
Interventions
Vitamin C
Dietary Supplement
Lead sponsor
Arrowhead Regional Medical Center
Other
Eligibility
Not listed
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Colton, California
Source: ClinicalTrials.gov public record
Updated Nov 10, 2022 · Synced Oct 21, 2026, 9:41 AM EDT
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 21, 2026, 9:41 AM EDT
Withdrawn Not applicable Interventional

hCAP18 Levels and Vitamin D Deficiency in Chronic Kidney Disease

NCT01026363
View directory record Official record
Conditions
Chronic Kidney Disease, Vitamin D Deficiency
Interventions
Ergocalciferol, Calcitriol
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 23, 2015 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Phase 1 Interventional

Effects of Treating Vitamin D Deficiency in Poorly Controlled Type 2 Diabetes

NCT01855321
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Vitamin D, Placebo
Drug
Lead sponsor
University of Florida
Other
Eligibility
30 Years to 65 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 26, 2015 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Phase 3 Interventional Results available

Cholecalciferol Supplementation for Sepsis in the ICU

NCT01896544
View directory record Official record
Conditions
Hypovitaminosis D
Interventions
Cholecalciferol, Placebo
Dietary Supplement
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 13, 2016 · Synced Oct 21, 2026, 9:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D and Adipose Tissue Inflammation

NCT01477034
View directory record Official record
Conditions
Vitamin D Deficiency, Obesity, Type 2 Diabetes Mellitus, Intestinal Permeability
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 4, 2014 · Synced Oct 21, 2026, 9:41 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Nutrition and Obesity in Under-Represented Populations: Food Insecurity Research to Advance Science and Improve Health

NCT06116422
View directory record Official record
Conditions
Pediatric Obesity, Food Insecurity, Nutrition, Healthy, Nutrition Poor
Interventions
Grocery intervention - unrestricted, Grocery intervention - restricted
Behavioral
Lead sponsor
Duke University
Other
Eligibility
12 Months to 24 Months
Enrollment
228 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Oct 21, 2026, 9:41 AM EDT