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ClinicalTrials.gov public records Last synced Oct 21, 2026, 10:10 PM EDT

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Showing 49–72 of 529 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: phytosterol Clear all
Not listed No phase listed Observational

Impact of a Chewable Plant Sterol Supplement on LDL-C in A Real-World Setting

NCT04642742
View directory record Official record
Conditions
Hyperlipidemia
Interventions
Chewable plant sterol
Dietary Supplement
Lead sponsor
Piper Biosciences, Inc.
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Los Altos, California
Source: ClinicalTrials.gov public record
Updated Nov 24, 2020 · Synced Oct 21, 2026, 10:10 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 21, 2026, 10:10 PM EDT
Completed Not applicable Interventional Results available

Modulation of Breast Cancer Risk Biomarkers by High Dose Vitamin D

NCT01166763
View directory record Official record
Conditions
Breast Cancer
Interventions
vitamin D3
Drug
Lead sponsor
Carol Fabian, MD
Other
Eligibility
Up to 55 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 18, 2016 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Vitamin D Supplementation on Cardiometabolic Risk Factors [The Daily D Health Study]

NCT01537809
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
9 Years to 14 Years
Enrollment
691 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 13, 2013 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Phase 1 Interventional

A New Formulation of Calcitriol (DN-101) in Patients With Advanced Malignancies

NCT00055263
View directory record Official record
Conditions
Neoplasms
Interventions
DN-101
Drug
Lead sponsor
Novacea
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2002
U.S. locations
2
States / cities
Buffalo, New York • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 28, 2009 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Not applicable Interventional

DNA Changes That Affect Vitamin D Metabolism in Patients With Colorectal Cancer Receiving Vitamin D Supplements

NCT00550563
View directory record Official record
Conditions
Colorectal Cancer
Interventions
cholecalciferol, polymerase chain reaction, polymorphism analysis, protein expression analysis, reverse transcriptase-polymerase chain reaction, western blotting, high performance liquid chromatography, laboratory biomarker analysis, pharmacological study, adjuvant therapy, immunoscintigraphy
Dietary Supplement · Genetic · Other + 1 more
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 120 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 4, 2017 · Synced Oct 21, 2026, 10:10 PM EDT
Terminated Not applicable Interventional Results available

Vitamin D Levels in Children With IBD

NCT00621257
View directory record Official record
Conditions
Inflammatory Bowel Disease, Crohn's Disease, Ulcerative Colitis
Interventions
ergocalciferol, Cholecalciferol
Dietary Supplement
Lead sponsor
Boston Children's Hospital
Other
Eligibility
5 Years to 21 Years
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 22, 2017 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Phase 2 Interventional

Calcitriol and Docetaxel in Treating Patients With Metastatic or Locally Advanced Pancreatic Cancer

NCT00238199
View directory record Official record
Conditions
Pancreatic Cancer
Interventions
calcitriol, docetaxel
Dietary Supplement · Drug
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 24, 2015 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Phase 4 Interventional

Supplementation in Adolescent Girls With Endometriosis

NCT02387931
View directory record Official record
Conditions
Endometriosis
Interventions
Vitamin D3, Fish Oil, Placebo
Dietary Supplement · Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
12 Years to 25 Years · Female only
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 1, 2016 · Synced Oct 21, 2026, 10:10 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 21, 2026, 10:10 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 21, 2026, 10:10 PM 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 21, 2026, 10:10 PM EDT
Completed Phase 2 Interventional

The Effects of Vitamin D and Bone Loss in Parkinson's Disease

NCT00907972
View directory record Official record
Conditions
Parkinson Disease
Interventions
Vitamin D3, Placebo
Dietary Supplement · Other
Lead sponsor
Memorial Medical Center
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Johnstown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 12, 2013 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Vitamin D for Established Type 2 Diabetes (DDM2)

NCT01736865
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Cholecalciferol, Placebo
Drug
Lead sponsor
Tufts Medical Center
Other
Eligibility
25 Years to 75 Years
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
2
States / cities
Boston, Massachusetts • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 1, 2020 · Synced Oct 21, 2026, 10:10 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Effects of Vitamin D and Omega-3 Supplementation on Telomeres in VITAL

NCT04386577
View directory record Official record
Conditions
Aging
Interventions
Vitamin D3 (cholecalciferol), fish oil
Dietary Supplement · Drug
Lead sponsor
Augusta University
Other
Eligibility
50 Years and older
Enrollment
1,054 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated May 13, 2020 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Phase 2 Interventional Results available

Daily Vitamin D for Sickle-cell Respiratory Complications

NCT04170348
View directory record Official record
Conditions
Sickle Cell Disease, Anemia, Sickle Cell, Anemia, Hemolytic, Congenital, Respiratory Tract Diseases, Respiration Disorders, Acute Chest Syndrome, Lung Diseases, Asthma, Respiratory Tract Infections, Nutrition Disorders, Deficiency Diseases Vitamin, Vitamin D Deficiency
Interventions
Daily oral vitamin D3, 3,333 IU, Monthly oral vitamin D3, 100,000 IU, Placebo oral tablet
Drug
Lead sponsor
Columbia University
Other
Eligibility
3 Years to 20 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 24, 2025 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Early Phase 1 Interventional

A Pilot Study to Examine the Effects of Vitamin D Supplementation on Mitochondrial Bioenergetics in Older Adults

NCT02445066
View directory record Official record
Conditions
Low 25-hydroxyvitamin D Concentrations
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
65 Years to 89 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2018 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Phase 3 Interventional Results available

Study of the Effect of Vitamin D as an Add-on Therapy to Corticosteroids in Asthma

NCT01248065
View directory record Official record
Conditions
Asthma
Interventions
Vitamin D3, Ciclesonide
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
408 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
16
States / cities
San Francisco, California • Denver, Colorado • Atlanta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2014 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Phase 3 Interventional Results available

Secondary Prevention of Osteoporosis

NCT00421343
View directory record Official record
Conditions
Osteoporosis
Interventions
alendronate with cholecalciferol, calcium carbonate with cholecalciferol, Falls prevention measures
Drug · Behavioral
Lead sponsor
Hebrew SeniorLife
Other
Eligibility
65 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Weight on Vitamin D Dose Response

NCT01013584
View directory record Official record
Conditions
Obesity, Vitamin D Deficiency
Interventions
cholecalciferol
Dietary Supplement
Lead sponsor
Creighton University
Other
Eligibility
19 Years to 60 Years · Male only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 26, 2012 · Synced Oct 21, 2026, 10:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

The Effect of Vitamin D Supplementation on Muscle Power in Elite Cyclist

NCT01518725
View directory record Official record
Conditions
Muscle Power
Interventions
Vitamin D, Placebo
Dietary Supplement
Lead sponsor
Oklahoma State University
Other
Eligibility
18 Years to 35 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Stillwater, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 29, 2015 · Synced Oct 21, 2026, 10:10 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Cyclic Versus Daily Teriparatide on Bone Mass

NCT00668941
View directory record Official record
Conditions
Osteoporosis
Interventions
Teriparatide, Alendronate, Calcium, Vitamin D3
Drug · Dietary Supplement
Lead sponsor
Helen Hayes Hospital
Other
Eligibility
45 Years to 85 Years · Female only
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2017
U.S. locations
1
States / cities
West Haverstraw, New York
Source: ClinicalTrials.gov public record
Updated Aug 10, 2017 · Synced Oct 21, 2026, 10:10 PM 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 21, 2026, 10:10 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 21, 2026, 10:10 PM EDT