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 are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 6, 2026, 4:37 AM EDT

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

Showing 1–24 of 127 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: active vitamin D Clear all
Completed Phase 2 Interventional Results available

Vitamin D3 Supplementation for Low-Risk Prostate Cancer: A Randomized Trial

NCT01759771
View directory record Official record
Conditions
Prostate Cancer
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
19 Years to 90 Years · Male only
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2020
U.S. locations
2
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 17, 2024 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Large Randomized Trial of Vitamin D, Omega-3 Fatty Acids and Cognitive Decline

NCT01669915
View directory record Official record
Conditions
Cognitive Decline
Interventions
vitamin D3, omega-3 fatty acids (fish oil), Vitamin D3 placebo, Fish oil placebo
Dietary Supplement · Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
60 Years to 92 Years
Enrollment
3,424 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 20, 2023 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Precision Nutrition Impact on Health-Related Behavior Change

NCT04959318
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Professional nutrition counseling, No professional nutrition counseling
Other
Lead sponsor
Madigan Army Medical Center
Federal
Eligibility
18 Years to 45 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Feb 10, 2025 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Phase 4 Interventional Results available

Trial to Optimize Mineral Outcomes in Dialysis Patients

NCT01100723
View directory record Official record
Conditions
Secondary Hyperparathyroidism, Chronic Kidney Disease
Interventions
Cinacalcet, active vitamin D analogue
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Lynchburg, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 1, 2017 · Synced Sep 6, 2026, 4:37 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 4, 2026 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Early Phase 1 Interventional

Effect of Vitamin D After Application With Valchlor

NCT02968446
View directory record Official record
Conditions
Skin Irritation
Interventions
4 placebo, 4 Vitamin D, Valchlor
Dietary Supplement · Drug
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 22, 2021 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Not applicable Interventional Results available

Individualized Response to Vitamin D Treatment Study

NCT02925195
View directory record Official record
Conditions
Characteristics That Modify the Response to Cholecalciferol Treatment
Interventions
Vitamin D3, Placebo
Dietary Supplement · Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
666 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
5
States / cities
Los Angeles, California • Evanston, Illinois • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2023 · Synced Sep 6, 2026, 4:37 AM EDT
Recruiting Phase 3 Interventional

Vitamin D and Type 2 Diabetes - Treat-To-Target

NCT07448974
View directory record Official record
Conditions
Prediabetes, Type 2 Diabetes (T2DM)
Interventions
Vitamin D (Cholecalciferol ), Placebo
Drug
Lead sponsor
Tufts Medical Center
Other
Eligibility
30 Years to 74 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Evaluate a Postbiotic in Supporting Weight Loss and Metabolic Health

NCT06911073
View directory record Official record
Conditions
Obesity and Overweight
Interventions
Postbiotic, Placebo
Dietary Supplement
Lead sponsor
ResBiotic Nutrition, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

CYP3A4 Activity and Mineral Homeostasis

NCT02019875
View directory record Official record
Conditions
Vitamin D and Calcium Homeostasis
Interventions
Rifampin, Clarithromycin, Grapefruit Juice, Placebo
Drug · Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 60 Years
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 18, 2023 · Synced Sep 6, 2026, 4:37 AM EDT
Terminated Not applicable Interventional Results available

Vitamin D Replacement: The Effect on Statin-Related Myalgias

NCT01022398
View directory record Official record
Conditions
HMG-CoA Reductase Inhibitors-related Myalgias
Interventions
cholecalciferol/placebo
Drug
Lead sponsor
Creighton University
Other
Eligibility
19 Years to 89 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated May 19, 2013 · Synced Sep 6, 2026, 4:37 AM EDT
Recruiting Phase 2 Interventional

Influence of β-hydroxy β-methyl Butyrate (HMB)Supplementation on Post-operative Muscle Mass and Function in Female Athletes

NCT05869812
View directory record Official record
Conditions
Atrophy
Interventions
CaHMB (Dietary supplement, not Drug), CaLa
Drug · Dietary Supplement
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 6, 2026, 4:37 AM EDT
Not yet recruiting Phase 2 Interventional

HMB Plus Vitamin D to Preserve Muscle in Older Adults Starting Semaglutide

NCT07760948
View directory record Official record
Conditions
Type 2 Diabetes Mellitus (T2DM), Sarcopenia, Obesity, Muscle Loss, Older Adults
Interventions
Calcium-HMB Plus Vitamin D3, Matching placebo
Dietary Supplement · Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
65 Years to 85 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Phase 2 Interventional

Effects of MEDI-522 On Disease Activity and Progression of Joint Damage in Patients With Active Rheumatoid Arthritis Suboptimally Responding to Methotrexate

NCT00069017
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
MEDI-522, Placebo
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
29
States / cities
Birmingham, Alabama • Glendale, Arizona • Phoenix, Arizona + 24 more
Source: ClinicalTrials.gov public record
Updated Nov 26, 2007 · Synced Sep 6, 2026, 4:37 AM EDT
Active, not recruiting Not applicable Interventional

The TRIABETES - ARMMS-T2D Study: A Randomized Trial to Compare Surgical and Medical Treatments for Type 2 Diabetes

NCT01047735
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obesity
Interventions
Roux-en-Y Gastric Bypass Surgery, Laparoscopic Adjustable Gastric Banding, Lifestyle Weight Loss Intervention
Procedure · Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
25 Years to 55 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2028
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Improving Community Ambulation After Hip Fracture

NCT01783704
View directory record Official record
Conditions
Hip Fracture
Interventions
Nutrition, PUSH, PULSE
Dietary Supplement · Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
60 Years and older
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
4
States / cities
Farmington, Connecticut • Baltimore, Maryland • Lebanon, New Hampshire + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2022 · Synced Sep 6, 2026, 4:37 AM EDT
Terminated Phase 3 Interventional Results available

Pediatric Chronic Kidney Disease Safety and Efficacy

NCT01277510
View directory record Official record
Conditions
Chronic Kidney Disease, Hyperparathyroidism, Hyperparathyroidism, Secondary, Kidney Disease, Secondary Hyperparathyroidism
Interventions
cinacalcet capsule, placebo, Standard of Care
Drug
Lead sponsor
Amgen
Industry
Eligibility
6 Years to 17 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
18
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2020 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Phase 4 Interventional Results available

Paricalcitol Versus Calcitriol for Efficacy and Safety in Stage 3/4 Chronic Kidney Disease (CKD) With Secondary Hyperparathyroidism (SHPT)

NCT00823303
View directory record Official record
Conditions
Secondary Hyperparathyroidism, Chronic Kidney Disease
Interventions
Paricalcitol, Calcitriol
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
4
States / cities
Chicago, Illinois • Evanston, Illinois • Detroit, Michigan + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2014 · Synced Sep 6, 2026, 4:37 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Effects of Exercise and Yogurt on Bone Mineral Density and Immunological Factors in Human Milk: The MEEMA Study

NCT03732261
View directory record Official record
Conditions
Lactational Amenorrhea, Body Weight Changes, Bone Loss
Interventions
Exercise and dietary
Other
Lead sponsor
North Carolina Agriculture & Technical State University
Other
Eligibility
25 Years to 40 Years · Female only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Greensboro, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 22, 2023 · Synced Sep 6, 2026, 4:37 AM 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 27, 2025 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Exercise and NutraStem (NT-020): Effects on Stem Cells

NCT01847027
View directory record Official record
Conditions
Adult Stem Cell Proliferation
Interventions
NutraStem, Placebo
Drug
Lead sponsor
University of North Texas Health Science Center
Other
Eligibility
50 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated May 28, 2019 · Synced Sep 6, 2026, 4:37 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

PUSH Plus Protein Pilot for Hip Fracture Patients

NCT03410823
View directory record Official record
Conditions
Hip Fracture
Interventions
PUSH, Protein, Nutrition
Behavioral · Dietary Supplement
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
60 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
2
States / cities
Baltimore, Maryland • Towson, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 25, 2024 · Synced Sep 6, 2026, 4:37 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Assessment of DHA On Reducing Early Preterm Birth

NCT02626299
View directory record Official record
Conditions
Preterm Birth
Interventions
Docosahexaenoic acid - 800mg/day, Docosahexaenoic acid - 200mg/day, Placebo
Drug · Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
1,100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
3
States / cities
Kansas City, Kansas • Cincinnati, Ohio • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 29, 2021 · Synced Sep 6, 2026, 4:37 AM EDT
Recruiting Not applicable Interventional

Preserving Physical Function in Older Adults With Cancer: Impact of an Optimizing Nutrition Intervention Applied Before and After Surgery

NCT05912257
View directory record Official record
Conditions
Cancer
Interventions
Structured perioperative nutrition and exercise, Nutrition and Exercise Counseling
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
55 Years and older
Enrollment
188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Sep 6, 2026, 4:37 AM EDT