- Conditions
- Heart Failure
- Interventions
- Cholecalciferol
- Dietary Supplement
- Lead sponsor
- Case Western Reserve University
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 64 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- Cleveland, Ohio
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 come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 241–264
of 437
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Preeclampsia
- Interventions
- Dietary Supplement/Vitamins, Placebo for Vitamin C and Vitamin E
- Drug
- Lead sponsor
- The George Washington University Biostatistics Center
- Other
- Eligibility
- Female only
- Enrollment
- 10,154 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2003 – 2009
- U.S. locations
- 16
- States / cities
- Birmingham, Alabama • Chicago, Illinois • Detroit, Michigan + 13 more
- Conditions
- Type 2 Diabetes
- Interventions
- cholecalciferol, microcrystalline cellulose
- Dietary Supplement · Other
- Lead sponsor
- Tufts University
- Other
- Eligibility
- 40 Years and older
- Enrollment
- 100 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Crohns Disease, Vitamin D Deficiency
- Interventions
- 5000 IU D3, 1000 IU D3, Placebo
- Dietary Supplement
- Lead sponsor
- Cedars-Sinai Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Renal Insufficiency
- Interventions
- Zoledronic Acid, Calcium with vitamin D, Alendronate
- Drug · Combination Product
- Lead sponsor
- University of Nebraska
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 59 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2014
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Vitamin D Deficiency
- Interventions
- vitamin D, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Northwestern University
- Other
- Eligibility
- 18 Years to 47 Years · Female only
- Enrollment
- 67 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2010
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- 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
- Conditions
- Vitamin D Deficiency
- Interventions
- Softgel Vitamin D3, Nano Liquid Vitamin D3, 25(OH)D Blood Serum Test, Placebo Control
- Dietary Supplement · Diagnostic Test · Other
- Lead sponsor
- Inspired Life Medical, Inc.
- Industry
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 114 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021
- U.S. locations
- 1
- States / cities
- Le Sueur, Minnesota
- Conditions
- Pancreatic Cancer
- Interventions
- Gemcitabine, Nab-paclitaxel, Paricalcitol, Placebo
- Drug · Other
- Lead sponsor
- Dana-Farber Cancer Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 36 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2024
- U.S. locations
- 2
- States / cities
- Boston, Massachusetts • Philadelphia, Pennsylvania
- Conditions
- HIV Infections
- Interventions
- Vitamin D supplement, Placebo
- Dietary Supplement · Other
- Lead sponsor
- University of North Carolina, Chapel Hill
- Other
- Eligibility
- 18 Years to 24 Years
- Enrollment
- 207 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2010
- U.S. locations
- 14
- States / cities
- Los Angeles, California • San Francisco, California • Washington D.C., District of Columbia + 10 more
- Conditions
- Premature Infants
- Interventions
- Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- Baylor College of Medicine
- Other
- Eligibility
- Not listed
- Enrollment
- 39 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2016
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Vitamin D Deficiency
- Interventions
- cholecalciferol, Placebo
- Dietary Supplement
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 50 Years to 100 Years · Female only
- Enrollment
- 62 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2014
- U.S. locations
- 1
- States / cities
- Madison, Wisconsin
- Conditions
- Respiratory Infection
- Interventions
- High Dose Vitamin D, Standard Dose Vitamin D, Placebo, Usual Care
- Drug · Dietary Supplement
- Lead sponsor
- University of Colorado, Denver
- Other
- Eligibility
- 60 Years and older
- Enrollment
- 107 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2016
- U.S. locations
- 1
- States / cities
- Aurora, Colorado
- Conditions
- Breast Cancer
- Interventions
- Celecoxib, Placebo, Cholecalciferol
- Drug
- Lead sponsor
- Hartford Hospital
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 45 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2016
- U.S. locations
- 1
- States / cities
- Grand Forks, North Dakota
- Conditions
- Hypovitaminosis D, Hypovitaminosis
- Interventions
- Vitamin Arm 1, Vitamin Arm 2, Vitamin Arm 3, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Madigan Army Medical Center
- Federal
- Eligibility
- 18 Years to 69 Years
- Enrollment
- 96 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Tacoma, Washington
- 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
- Conditions
- Cystic Fibrosis, Respiratory Tract Infections
- Interventions
- Cholecalciferol
- Dietary Supplement
- Lead sponsor
- Emory University
- Other
- Eligibility
- 16 Years and older
- Enrollment
- 91 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2017
- U.S. locations
- 5
- States / cities
- Birmingham, Alabama • Atlanta, Georgia • Iowa City, Iowa + 2 more
- Conditions
- Colorectal Adenomatous Polyps
- Interventions
- Calcium and vitamin D3 combined, Placebo, Calcium, Vitamin D3
- Dietary Supplement · Drug
- Lead sponsor
- Emory University
- Other
- Eligibility
- 30 Years to 74 Years
- Enrollment
- 92 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2013
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Polycystic Ovarian Syndrome in Adolescent Females, Vitamin D Deficiency
- Interventions
- Vitamin D 4000IU daily, Placebo
- Drug
- Lead sponsor
- Yale University
- Other
- Eligibility
- 13 Years to 21 Years · Female only
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026 – 2028
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Aphthous Stomatitis
- Interventions
- multivitamin
- Dietary Supplement
- Lead sponsor
- UConn Health
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 160 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2009
- U.S. locations
- 1
- States / cities
- Farmington, Connecticut
- Conditions
- Cystic Fibrosis
- Interventions
- Vitamin D3, Placebo
- Dietary Supplement
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2010
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Polycystic Kidney Disease
- Interventions
- Niacinamide, Placebo
- Dietary Supplement · Other
- Lead sponsor
- University of Kansas Medical Center
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 36 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2017
- U.S. locations
- 1
- States / cities
- Kansas City, Kansas
- Conditions
- Bone Density, Bone Health, Fractures
- Interventions
- Vitamin D3 placebo, Fish oil placebo, Omega-3 fatty acids (fish oil), Vitamin D3
- Dietary Supplement · Drug
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 25,871 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2026
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Wheezing, Allergy
- Interventions
- Cholecalciferol, Cholecalciferol
- Dietary Supplement · Drug
- Lead sponsor
- Case Western Reserve University
- Other
- Eligibility
- Up to 1 Year
- Enrollment
- 300 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2017
- U.S. locations
- 5
- States / cities
- New York, New York • Cleveland, Ohio • Charleston, South Carolina