- Conditions
- Hypovitaminosis D
- Interventions
- Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- Wake Forest University Health Sciences
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 113 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2017
- U.S. locations
- 1
- States / cities
- Charlotte, North Carolina
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 265–288
of 437
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Myopathic Symptoms
- Interventions
- Ergocalciferol, Placebo
- Drug
- Lead sponsor
- Cedars-Sinai Medical Center
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 11 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2019
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Vitamin D Deficiency
- Interventions
- High Dose Vitamin D3, Low Dose Vitamin D3, Placebo
- Dietary Supplement
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- Up to 75 Years · Female only
- Enrollment
- 230 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2014
- U.S. locations
- 1
- States / cities
- Madison, Wisconsin
- Conditions
- Healthy
- Interventions
- vitamin D, aerobic training
- Dietary Supplement · Other
- Lead sponsor
- David Travis Thomas
- Other
- Eligibility
- 60 Years and older
- Enrollment
- 50 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2018
- U.S. locations
- 1
- States / cities
- Lexington, Kentucky
- Conditions
- Renal Function, Endothelial Function, Blood Pressure, Overweight, Obesity
- Interventions
- Vitamin D ergocalciferol, Probenecid, Allopurinol, Placebo
- Drug
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 242 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2015
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Chronic Inflammation, Inflammaging
- Interventions
- Dietary supplement, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Edifice Health
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 781 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021 – 2022
- U.S. locations
- 2
- States / cities
- Greenbrae, California • Suwanee, Georgia
- Conditions
- Thalassemia Major
- Interventions
- Vitamin D3, Placebo
- Drug
- Lead sponsor
- Weill Medical College of Cornell University
- Other
- Eligibility
- 6 Years to 60 Years
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2014
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- 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
- Accepts healthy volunteers
- Timeline
- 2018 – 2022
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Opioid Use Disorder
- Interventions
- [11C]-PHNO, Calcitriol, Placebo Control, PET Scan
- Drug · Dietary Supplement · Other + 1 more
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 5 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2025
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Hypovitaminosis D
- Interventions
- 100,000 IU cholecalciferol, Placebo
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2015
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Anemia
- 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
- 50 Years and older
- Enrollment
- 2,000 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2025
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Healthy, Vitamin D Deficiency
- Interventions
- ergocalciferol, placebo pill
- Dietary Supplement · Other
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 9 Years to 18 Years · Female only
- Enrollment
- 90 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2013
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- 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
- Conditions
- Chronic Kidney Disease stage3, Chronic Kidney Disease stage4, Vitamin d Deficiency, Secondary Hyperparathyroidism
- Interventions
- CTAP101, Placebo
- Drug
- Lead sponsor
- OPKO Health, Inc.
- Industry
- Eligibility
- 8 Years to 17 Years
- Enrollment
- 2 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2024
- U.S. locations
- 2
- States / cities
- Columbus, Ohio • Greenville, South Carolina
- Conditions
- Chronic Kidney Disease
- Interventions
- Vitamin D3, Vitamin D2, Placebo
- Dietary Supplement
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 20 Years to 65 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Vitamin D Deficiency
- Interventions
- 800 IU Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- Milton S. Hershey Medical Center
- Other
- Eligibility
- 18 Years to 35 Years
- Enrollment
- 412 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2019
- U.S. locations
- 1
- States / cities
- University Park, Pennsylvania
- Conditions
- Low Bone Mass
- Interventions
- Resveratrol, Placebo
- Dietary Supplement
- Lead sponsor
- University of Delaware
- Other
- Eligibility
- Female only
- Enrollment
- 52 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2026
- U.S. locations
- 1
- States / cities
- Newark, Delaware
- Conditions
- Osteoporosis
- Interventions
- Teriparatide, Risedronate, Placebo, Calcium, Vitamin D
- Drug · Dietary Supplement
- Lead sponsor
- Eli Lilly and Company
- Industry
- Eligibility
- 50 Years and older
- Enrollment
- 224 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2015
- U.S. locations
- 6
- States / cities
- Fort Lauderdale, Florida • New Port Richey, Florida • Orlando, Florida + 3 more
- Conditions
- Hypertension
- Interventions
- Vitamin D, calcitriol, Placebo
- Drug
- Lead sponsor
- Atlanta VA Medical Center
- Federal
- Eligibility
- 18 Years to 80 Years
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2011
- U.S. locations
- 1
- States / cities
- Decatur, Georgia
- Conditions
- Chronic Kidney Disease
- Interventions
- cholecalciferol, doxercalciferol, placebo
- Dietary Supplement
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2012
- U.S. locations
- 1
- States / cities
- Indianapolis, Indiana
- Conditions
- Colorectal Cancer
- Interventions
- Vitamin D3 (cholecalciferol), Placebo
- Drug
- Lead sponsor
- University of Illinois at Chicago
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 55 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Vitamin A Status
- Interventions
- b-carotene, retinyl palmitate, placebo
- Dietary Supplement
- Lead sponsor
- University of California, Davis
- Other
- Eligibility
- 18 Years to 35 Years · Female only
- Enrollment
- 85 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013
- U.S. locations
- 1
- States / cities
- Davis, California
- Conditions
- Osteoporosis, Hypomagnesemia
- Interventions
- EffCaMgCit, Placebo
- Drug · Other
- Lead sponsor
- University of Texas Southwestern Medical Center
- Other
- Eligibility
- 21 Years to 99 Years
- Enrollment
- 62 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2019 – 2021
- U.S. locations
- 1
- States / cities
- Dallas, Texas
- Conditions
- Parkinson's Disease
- Interventions
- Vitamin D3, Vitamin D3 - high dose, Placebo
- Dietary Supplement
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years to 89 Years
- Enrollment
- 31 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2015
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia