- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency
- Interventions
- UVB treatment, Sham comparator
- Device
- Lead sponsor
- Boston University
- Other
- Eligibility
- 22 Years and older
- Enrollment
- 69 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022 – 2023
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
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 1–24
of 34
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Vitamin D Deficiency, Cystic Fibrosis
- Interventions
- High-Dose Vitamin D3, Stool Sample, Sputum Sample, Sham Comparator, Blood draw
- Dietary Supplement · Other · Procedure
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 41 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2017
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Obesity, Insulin Resistance, Inflammation
- Interventions
- Vitamin D, Placebo
- Dietary Supplement · Drug
- Lead sponsor
- Purdue University
- Other
- Eligibility
- 18 Years to 35 Years
- Enrollment
- 34 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2010
- U.S. locations
- 1
- States / cities
- West Lafayette, Indiana
- Conditions
- Obesity, Insulin Resistance, Vitamin D Deficiency
- Interventions
- Vitamin D3
- Drug
- Lead sponsor
- Perrin C White, MD
- Other
- Eligibility
- 6 Years to 17 Years
- Enrollment
- 109 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 1
- States / cities
- Dallas, Texas
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency, Healthy Volunteers
- Interventions
- ALPCO 25(OH) Vitamin D CLIA Kit
- Device
- Lead sponsor
- American Laboratory Products Company
- Industry
- Eligibility
- 22 Years and older
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026
- U.S. locations
- 1
- States / cities
- Salem, New Hampshire
- Conditions
- Cystic Fibrosis
- Interventions
- d6-25-hydroxyvitamin D3
- Drug
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2023
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Vitamin D Deficiency
- Interventions
- cholecalciferol.
- Drug
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 40 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2006 – 2007
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Inflammation
- Interventions
- Arm 2: cholecalciferol 50,000 IU, Arm 3: cholecalciferol 100,000 IU, Arm 4: cholecalciferol 200,000 IU, Arm 1: Placebo
- Dietary Supplement · Other
- Lead sponsor
- University Hospitals Cleveland Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 24 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2015
- U.S. locations
- 1
- States / cities
- Cleveland, Ohio
- Conditions
- Vitamin D Status
- Interventions
- Not listed
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 19 Years to 90 Years
- Enrollment
- 29 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2008
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- 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
- Conditions
- Vitamin D
- Interventions
- Not listed
- Lead sponsor
- Mike O'Callaghan Military Hospital
- Federal
- Eligibility
- 18 Years and older
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Nellis Air Force Base, Nevada
- Conditions
- Immunosenescence, Shingles
- Interventions
- Varicella Zoster Virus Vaccine (Zostavax)
- Biological
- Lead sponsor
- University of Colorado, Denver
- Other
- Eligibility
- 60 Years and older
- Enrollment
- 33 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2014
- U.S. locations
- 1
- States / cities
- Aurora, Colorado
- Conditions
- Osteoporosis, Arthroplasty Complications, Fragility Fracture
- Interventions
- Surgeon-Initiated Bone Health Referral Pathway
- Combination Product
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 2,000 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023 – 2028
- U.S. locations
- 1
- States / cities
- Columbia, Maryland
- Conditions
- COVID-19, Coronavirus, SARS-CoV2 Infection
- Interventions
- Rayaldee, Placebo
- Drug
- Lead sponsor
- OPKO Health, Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 171 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2021
- U.S. locations
- 10
- States / cities
- San Francisco, California • Miami, Florida • Evanston, Illinois + 6 more
- Conditions
- Inflammation, Insulin Resistance
- Interventions
- Ergocalciferol, Placebo
- Drug
- Lead sponsor
- University of Utah
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 58 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Salt Lake City, Utah
- 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
- Secondary Hyperparathyroidism Due to Renal Causes, Chronic Kidney Diseases, Vitamin D Deficiency, Stage 5 Chronic Kidney Disease
- Interventions
- Calcifediol Oral Capsule, Placebo oral capsule
- Drug
- Lead sponsor
- OPKO Health, Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 44 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2021
- U.S. locations
- 18
- States / cities
- Peoria, Arizona • Phoenix, Arizona • Cypress, California + 13 more
- Conditions
- Vitamin D Deficiency, Renal Failure Chronic Requiring Hemodialysis
- Interventions
- Ergocalciferol, Placebo
- Drug
- Lead sponsor
- Albany College of Pharmacy and Health Sciences
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 4
- States / cities
- Albany, New York • Clifton Park, New York • Saratoga Springs, New York + 1 more
- Conditions
- Insulin Sensitivity, Flow-mediated Dilation, Arterial Stiffness
- Interventions
- Not listed
- Lead sponsor
- University of Alabama at Birmingham
- Other
- Eligibility
- 14 Years to 18 Years · Female only
- Enrollment
- 62 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2013
- U.S. locations
- 1
- States / cities
- Birmingham, Alabama
- Conditions
- Vitamin D Deficiency
- Interventions
- Vitamin D, 25(OH)D3
- Drug
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 35 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2019
- U.S. locations
- 2
- States / cities
- Los Angeles, California
- Conditions
- Vitamin D Deficiency
- Interventions
- cholecalciferol, 25(OH)D
- Dietary Supplement
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 20 Years to 60 Years
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Inflammatory Bowel Disease (IBD)
- Interventions
- Vitamin D-3
- Dietary Supplement
- Lead sponsor
- Nemours Children's Clinic
- Other
- Eligibility
- 5 Years to 17 Years
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2015
- U.S. locations
- 1
- States / cities
- Jacksonville, Florida
- Conditions
- Vitamin D Deficiency, Sarcopenia
- Interventions
- vitamin D3, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Tufts University
- Other
- Eligibility
- 60 Years to 85 Years
- Enrollment
- 100 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015 – 2018
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Pancreatic Cancer
- Interventions
- polymorphism analysis, immunologic technique, laboratory biomarker analysis, medical chart review
- Genetic · Other
- Lead sponsor
- Alliance for Clinical Trials in Oncology
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 265 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2014
- U.S. locations
- 1
- States / cities
- Glens Falls, New York