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ClinicalTrials.gov public records Last synced Oct 22, 2026, 6:29 PM EDT

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Showing 169–192 of 530 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: phytosterol Clear all
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Vitamin D Supplementation in Breastfeeding Women

NCT01240265
View directory record Official record
Conditions
Vitamin D Deficiency, Rickets, Infant Nutrition Disorders
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
1 Month to 50 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 30, 2013 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Phase 2 Interventional

Vitamin D3 Supplementation for Heart Failure Patients

NCT01636570
View directory record Official record
Conditions
Heart Failure, Vitamin D Deficiency, Cardiomyopathy, Congestive Heart Failure
Interventions
Placebo Comparator: Sugar Pill, Vitamin D3 (cholecalciferol)
Drug
Lead sponsor
Heidi Moretti, MS, RD
Other
Eligibility
Not listed
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
2
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Apr 26, 2017 · Synced Oct 22, 2026, 6:29 PM 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 22, 2026, 6:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioequivalency Study of Calcitriol Tablets Under Fasting Conditions

NCT00601328
View directory record Official record
Conditions
Secondary Hyperparathyroidism, Hypocalcemia
Interventions
Calcitriol
Drug
Lead sponsor
Roxane Laboratories
Industry
Eligibility
18 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003
U.S. locations
1
States / cities
Springfield, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 23, 2018 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Hypovitaminosis D in Neurocritical Patients

NCT02881957
View directory record Official record
Conditions
Craniocerebral Trauma, Intracranial Aneurysm, Brain Neoplasms, Spinal Cord Injuries, Seizures, Meningitis, Stroke, Intracranial Hemorrhages, Critical Illness, Vitamin d Deficiency
Interventions
Cholecalciferol, Placebo
Drug · Other
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
274 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 15, 2022 · Synced Oct 22, 2026, 6:29 PM EDT
Terminated Phase 4 Interventional Results available

Vitamin D Supplementation for Treatment of Heart Failure

NCT01230307
View directory record Official record
Conditions
Heart Failure
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 18, 2016 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Phase 3 Interventional

Supplementation With Vitamin D, Calcium or Both on Calcium Absorption and Bone Mineral Content in Children With JRA

NCT00570934
View directory record Official record
Conditions
Juvenile Rheumatoid Arthritis
Interventions
Cholecalciferol, Calcium, Calcium and cholecalciferol, Placebo
Dietary Supplement · Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
3 Years to 15 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2002
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 10, 2016 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety of Vitamin D Supplementation in Older Persons

NCT00681590
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
cholecalciferol (vitamin D)
Dietary Supplement
Lead sponsor
University of Miami
Other
Eligibility
65 Years to 95 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 26, 2017 · Synced Oct 22, 2026, 6:29 PM EDT
Terminated Phase 3 Interventional Results available

Zolendronate for the Prevention of Bone Loss in Men w/ Prostate CA on Long-Term Androgen Deprivation

NCT00058188
View directory record Official record
Conditions
Osteoporosis, Prostate Cancer
Interventions
cholecalciferol, calcium gluconate, zoledronic acid
Dietary Supplement · Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Male only
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
3
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 8, 2020 · Synced Oct 22, 2026, 6:29 PM 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 22, 2026, 6:29 PM EDT
Terminated Phase 4 Interventional Results available

Pediatric Study to Evaluate Risk of Developing Essential Fatty Acid Deficiency When Receiving Clinolipid or Standard-of-Care Lipid Emulsion

NCT02476994
View directory record Official record
Conditions
Essential Fatty Acid Deficiency (EFAD)
Interventions
Clinolipid, Intralipid
Drug
Lead sponsor
Baxter Healthcare Corporation
Industry
Eligibility
Up to 17 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
4
States / cities
Park Ridge, Illinois • Indianapolis, Indiana • Columbus, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2021 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Not applicable Interventional Results available

Vitamin D Absorption in HIV Infected Young Adults Being Treated With Tenofovir Containing cART

NCT01751646
View directory record Official record
Conditions
HIV Infection
Interventions
Vitamin D3 50,000 IU, Vitamin D3 placebo
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
16 Years to 24 Years
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
16
States / cities
Los Angeles, California • Washington D.C., District of Columbia • Fort Lauderdale, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2019 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Dose-dependent Anti-inflammatory Effects of Vitamin D in a Human Gingivitis Model

NCT00779909
View directory record Official record
Conditions
Gingivitis
Interventions
vitamin D3, Placebo
Drug · Other
Lead sponsor
Boston University
Other
Eligibility
18 Years to 64 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 2, 2017 · Synced Oct 22, 2026, 6:29 PM 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 21, 2023 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Phase 2Phase 3 Interventional

Vitamin D Supplementation in HIV

NCT01475890
View directory record Official record
Conditions
HIV-infection/Aids
Interventions
Vitamin D3, Placebo
Dietary Supplement
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
5 Years to 24 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 17, 2017 · Synced Oct 22, 2026, 6:29 PM 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 22, 2026, 6:29 PM EDT
Active, not recruiting Phase 4 Interventional

Preoperative Correction of Vitamin D Deficiency in Total Joint Arthroplasty (TJA)

NCT07006714
View directory record Official record
Conditions
Osteoarthritis, Vitamin D Deficiency
Interventions
Vitamin D3
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 96 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Phase 2 Interventional Results available

Vitamin D to Prevent Autism in Newborn Siblings

NCT01366885
View directory record Official record
Conditions
Autistic Disorder
Interventions
Vitamin D3
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
20 Years to 44 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
1
States / cities
Oregon City, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 14, 2016 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Vitamin D and Vascular Health in Children

NCT01797302
View directory record Official record
Conditions
Obesity, Vitamin D Deficiency
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
University of Pittsburgh
Other
Eligibility
10 Years to 18 Years
Enrollment
225 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 24, 2020 · Synced Oct 22, 2026, 6:29 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Study To Understand Fall Reduction and Vitamin D in You

NCT02166333
View directory record Official record
Conditions
Vitamin D Deficiency, Falls
Interventions
200 IU/d cholecalciferol, 1000 IU/d cholecalciferol, 2000 IU/d cholecalciferol, 4000 IU/d cholecalciferol
Dietary Supplement
Lead sponsor
Johns Hopkins University
Other
Eligibility
70 Years and older
Enrollment
688 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
2
States / cities
Baltimore, Maryland • Hagerstown, Maryland
Source: ClinicalTrials.gov public record
Updated May 14, 2021 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Not applicable Interventional

Role of Vitamin D in Secondary Prevention of Cardiovascular Events

NCT01018849
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Cholecalciferol, Placebo
Dietary Supplement
Lead sponsor
Creighton University
Other
Eligibility
19 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
2
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 15, 2016 · Synced Oct 22, 2026, 6:29 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

Improving Functionality in Older People

NCT03611049
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
High dose Vitamin D3, Low dose Vitamin D3
Dietary Supplement
Lead sponsor
Texas Tech University Health Sciences Center
Other
Eligibility
65 Years to 89 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Oct 22, 2026, 6:29 PM EDT
Completed Not applicable Interventional

S0812 High Dose Cholecalciferol in Premenopausal Women at High-Risk for Breast Cancer

NCT01097278
View directory record Official record
Conditions
brca1 Mutation Carrier, brca2 Mutation Carrier, Breast Cancer
Interventions
cholecalciferol, placebo
Dietary Supplement · Other
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years to 50 Years · Female only
Enrollment
208 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
360
States / cities
Anniston, Alabama • Mobile, Alabama • Anchorage, Alaska + 230 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2017 · Synced Oct 22, 2026, 6:29 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

The Effectiveness of a Weight-dependent Algorithm for Dosing Vitamin D.

NCT07876843
View directory record Official record
Conditions
Hypovitaminosis D
Interventions
Vitamin D3, Calcium, and Vitamin C
Dietary Supplement
Lead sponsor
Atlantic Health System
Other
Eligibility
6 Years to 21 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2032
U.S. locations
1
States / cities
Morristown, New Jersey
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 22, 2026, 6:29 PM EDT