- Conditions
- Seasonal Mood Disorder
- Interventions
- Vitamin D, No Vitamin D
- Dietary Supplement
- Lead sponsor
- Corewell Health South
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 27 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2020
- U.S. locations
- 1
- States / cities
- Saint Joseph, Michigan
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 280
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Prostatic Neoplasms, Bone Mineral Density Quantitative Trait Locus 3
- Interventions
- vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- University of Rochester
- Other
- Eligibility
- 60 Years to 99 Years · Male only
- Enrollment
- 108 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- Rochester, New York
- Conditions
- Chronic Kidney Disease (CKD), Secondary Hyperparathyroidism
- Interventions
- PLS240, Standard of Care
- Drug · Combination Product
- Lead sponsor
- Pathalys Pharma
- Industry
- Eligibility
- 1 Month to 17 Years
- Enrollment
- 56 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026 – 2032
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- Conditions
- Prostate Cancer
- Interventions
- cholecalciferol
- Dietary Supplement
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years to 120 Years · Male only
- Enrollment
- 148 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2013
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- Conditions
- Osteoporosis
- Interventions
- Vitamin D3, Multivitamin
- Drug · Dietary Supplement
- Lead sponsor
- Leigh Eck, MD
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 22 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2012
- U.S. locations
- 1
- States / cities
- Kansas City, Missouri
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency
- Interventions
- Vitamin D, Placebo, Standard of Care
- Dietary Supplement · Other
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 70 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Inflammatory Bowel Diseases, Vitamin D Deficiency
- Interventions
- Vitamin D (ergocalciferol and/ or cholecalciferol)
- Dietary Supplement
- Lead sponsor
- Cedars-Sinai Medical Center
- Other
- Eligibility
- 18 Years to 85 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Vitamin D Deficiency, Rotator Cuff Tears
- Interventions
- Vitamin D3 supplementation, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Community Memorial Health System
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 240 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021 – 2024
- U.S. locations
- 2
- States / cities
- Ventura, California
- Conditions
- Health, Subjective, Gastrointestinal Dysfunction, Cardiovascular Risk Factor, Autoimmune Diseases, Dental Diseases, Hormone Disturbance, Neurocognitive Dysfunction
- Interventions
- Supplements and/or medical foods, Behavioral change support program, Food plan
- Dietary Supplement · Behavioral · Other
- Lead sponsor
- Metagenics, Inc.
- Industry
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 400 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2022
- U.S. locations
- 1
- States / cities
- Gig Harbor, Washington
- Conditions
- Delusion of Reference
- Interventions
- Endocrine Society UL Dosage Vitamin D, Institute of Medicine Dosage Vitamin D, Calcium
- Dietary Supplement
- Lead sponsor
- Winthrop University Hospital
- Other
- Eligibility
- 50 Years to 90 Years · Female only
- Enrollment
- 132 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2016
- U.S. locations
- 1
- States / cities
- Mineola, New York
- 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
- Conditions
- Frailty
- Interventions
- Supervised aerobic + resistance training and nutritional support
- Behavioral
- Lead sponsor
- VA Office of Research and Development
- Federal
- Eligibility
- 50 Years and older
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2024
- U.S. locations
- 1
- States / cities
- Durham, North Carolina
- 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
- Inflammatory Bowel Disease, Crohn Disease, Ulcerative Colitis, Vitamin D Deficiency
- Interventions
- vitamin D3
- Dietary Supplement
- Lead sponsor
- Boston Children's Hospital
- Other
- Eligibility
- 5 Years to 25 Years
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2025
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Healthy, no Evidence of Disease, Skin Cancer
- Interventions
- cholecalciferol
- Drug
- Lead sponsor
- National Cancer Institute (NCI)
- NIH
- Eligibility
- 40 Years and older
- Enrollment
- 25 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Tucson, Arizona
- Conditions
- Sarcopenia
- Interventions
- Exercise Intervention, Supplement Intervention
- Other · Dietary Supplement
- Lead sponsor
- Tufts University
- Other
- Eligibility
- 70 Years and older
- Enrollment
- 150 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2014
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency
- Interventions
- Vitamin D, Placebo, Vitamin D + L-cysteine, L-cysteine
- Drug
- Lead sponsor
- Louisiana State University Health Sciences Center Shreveport
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 165 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2020 – 2022
- U.S. locations
- 1
- States / cities
- Shreveport, Louisiana
- Conditions
- Neuromuscular Function
- Interventions
- Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- Wake Forest University Health Sciences
- Other
- Eligibility
- 65 Years to 89 Years
- Enrollment
- 136 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2018
- U.S. locations
- 1
- States / cities
- Winston-Salem, North Carolina
- Conditions
- Insulin Resistance, Obesity, Vitamin D25 Insufficiency
- Interventions
- Vitamin D drops, Placebo drops
- Drug
- Lead sponsor
- Weill Medical College of Cornell University
- Other
- Eligibility
- 7 Years to 18 Years
- Enrollment
- 110 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2012
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Osteogenesis Imperfecta
- Interventions
- Setrusumab, Placebo
- Biological · Other
- Lead sponsor
- Ultragenyx Pharmaceutical Inc
- Industry
- Eligibility
- 5 Years to 25 Years
- Enrollment
- 183 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2027
- U.S. locations
- 22
- States / cities
- Little Rock, Arkansas • Los Angeles, California • Sacramento, California + 19 more
- Conditions
- Obesity, Pediatric, Obesity, Childhood, Obesity, Morbid, Vitamin D Deficiency
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Columbia University
- Other
- Eligibility
- 5 Years to 11 Years
- Enrollment
- 6 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- New York, New York
- 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
- Atrophy
- Interventions
- CaHMB (Dietary supplement, not Drug), CaLa
- Drug · Dietary Supplement
- Lead sponsor
- University of Kansas Medical Center
- Other
- Eligibility
- 18 Years to 45 Years · Female only
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2029
- U.S. locations
- 1
- States / cities
- Overland Park, Kansas
- Conditions
- Sarcopenia
- Interventions
- Placebo, HMB plus Vitamin D, Non-Exercise, Exercise
- Dietary Supplement · Drug · Behavioral
- Lead sponsor
- Metabolic Technologies Inc.
- Industry
- Eligibility
- 60 Years and older
- Enrollment
- 238 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2019
- U.S. locations
- 1
- States / cities
- Ames, Iowa