- 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
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 326
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Pre-diabetes
- Interventions
- vitamin D, placebo
- Drug
- Lead sponsor
- Charles Drew University of Medicine and Science
- Other
- Eligibility
- 18 Years to 90 Years
- Enrollment
- 117 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2012
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Adult Solid Neoplasm
- Interventions
- Calcitriol, Cisplatin, Gemcitabine Hydrochloride, Pharmacological Study
- Dietary Supplement · Drug · Other
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 14 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 2
- States / cities
- Buffalo, New York • Charlottesville, Virginia
- Conditions
- Cirrhosis, Hepatocellular Carcinoma
- Interventions
- Vitamin D
- Drug
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 18 Years to 75 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2016
- U.S. locations
- 1
- States / cities
- Washington D.C., District of Columbia
- Conditions
- Bone Loss, Periodontitis
- Interventions
- Periodontal surgery, FORTEO, Placebo, Vitamin D and Calcium
- Procedure · Drug · Dietary Supplement
- Lead sponsor
- University of Michigan
- Other
- Eligibility
- 30 Years to 75 Years
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2004 – 2009
- U.S. locations
- 1
- States / cities
- Ann Arbor, Michigan
- Conditions
- Secondary Hyperparathyroidism
- Interventions
- DP001
- Drug
- Lead sponsor
- Deltanoid Pharmaceuticals
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 42 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2014
- U.S. locations
- 6
- States / cities
- Tucson, Arizona • Tustin, California • Denver, Colorado + 3 more
- Conditions
- Leukemia, Lymphoma, Myelodysplastic Syndromes, Osteoporosis, Ovarian Cancer
- Interventions
- calcium, cholecalciferol, zoledronic acid
- Dietary Supplement · Drug
- Lead sponsor
- University of Minnesota
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 61 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2012
- U.S. locations
- 2
- States / cities
- Minneapolis, Minnesota • Madison, Wisconsin
- Conditions
- Osteoporosis
- Interventions
- PTH(1-84), Ibandronate, Placebo injection, Placebo pills
- Drug · Other
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 55 Years to 75 Years · Female only
- Enrollment
- 44 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- San Francisco, California
- Conditions
- Prostate Cancer
- Interventions
- calcitriol, dexamethasone, protein expression analysis, laboratory biomarker analysis
- Dietary Supplement · Drug · Genetic + 1 more
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- Up to 120 Years · Male only
- Enrollment
- 18 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2010
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- Conditions
- Secondary Hyperparathyroidism Due to Renal Causes, Vitamin D Insufficiency, CKD Stage 3, CKD Stage 4
- Interventions
- Calcifediol Oral Capsule, Calcifediol Oral Product, Cholecalciferol, Paricalcitol Oral Capsule
- Drug
- Lead sponsor
- OPKO Health, Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 69 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2020
- U.S. locations
- 3
- States / cities
- Garden Grove, California • Chicago, Illinois • West Bend, Wisconsin
- Conditions
- Nonmelanoma Skin Cancer, Basal Cell Carcinoma, Squamous Cell Carcinoma
- Interventions
- Vitamin D (VitD), Placebo, Photodynamic therapy (PDT), Mohs surgery or electrodessication & curettage (ED&C) (standard of care)
- Dietary Supplement · Other · Procedure
- Lead sponsor
- Case Comprehensive Cancer Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 54 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026 – 2027
- U.S. locations
- 1
- States / cities
- Cleveland, Ohio
- Conditions
- Femoral Fracture, Fragility Fracture, Muscle Atrophy
- Interventions
- Essential Amino Acid Supplementation
- Combination Product
- Lead sponsor
- Michael C Willey
- Other
- Eligibility
- 65 Years and older
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2026
- U.S. locations
- 2
- States / cities
- Iowa City, Iowa • Eugene, Oregon
- Conditions
- Postmenopausal Osteoporosis
- Interventions
- Teriparatide, Risedronate, Placebo, Calcium, Vitamin D
- Drug
- Lead sponsor
- Eli Lilly and Company
- Industry
- Eligibility
- 45 Years and older · Female only
- Enrollment
- 1,366 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2016
- U.S. locations
- 30
- States / cities
- Birmingham, Alabama • Concord, California • Fresno, California + 27 more
- 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
- Lung Cancer, Precancerous Condition, Tobacco Use Disorder
- Interventions
- calcitriol, laboratory biomarker analysis, pharmacological study
- Drug · Other
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 40 Years to 79 Years
- Enrollment
- 16 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2018
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- Conditions
- Chronic Kidney Disease
- Interventions
- Paricalcitol
- Drug
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 16 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Indianapolis, Indiana
- Conditions
- Cardiovascular Disease
- Interventions
- Cholecalciferol, Placebo
- Dietary Supplement
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 24 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2015
- U.S. locations
- 2
- States / cities
- Omaha, Nebraska
- Conditions
- Hypovitaminosis D
- Interventions
- 25 Hydroxy- Vitamin D3 [25 (OH) D3], Placebo
- Drug
- Lead sponsor
- Charles Drew University of Medicine and Science
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 330 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2018
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Covid 19, Vitamin D Deficiency
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Arizona State University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 41 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020
- U.S. locations
- 1
- States / cities
- Tempe, Arizona
- Conditions
- Colorectal Cancer, Precancerous Condition
- Interventions
- cholecalciferol, placebo
- Dietary Supplement · Other
- Lead sponsor
- Northwestern University
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 22 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2012
- U.S. locations
- 2
- States / cities
- Chicago, Illinois
- Conditions
- Post-Acute COVID-19 Syndrome, Fatigue
- Interventions
- Dietary intervention to mitigate Post-Acute COVID-19 Syndrome, Attention Control
- Other
- Lead sponsor
- University of Maryland, Baltimore
- Other
- Eligibility
- 50 Years to 94 Years
- Enrollment
- 56 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2025 – 2028
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- X-Linked Hypophosphatemia
- Interventions
- burosumab, Oral Phosphate Supplement, active vitamin D
- Biological · Drug
- Lead sponsor
- Kyowa Kirin, Inc.
- Industry
- Eligibility
- 1 Year to 12 Years
- Enrollment
- 61 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2019
- U.S. locations
- 5
- States / cities
- Los Angeles, California • San Francisco, California • Indianapolis, Indiana + 2 more
- Conditions
- Spinal Cord Injuries, Osteoporosis, Metabolic Syndrome
- Interventions
- Rosuvastatin Calcium, Placebo Oral Tablet, Coenzyme Q10, Calcium Carbonate, Vitamin D
- Drug · Dietary Supplement
- Lead sponsor
- Dr. B. Catharine. Craven
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 8 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2022
- U.S. locations
- 1
- States / cities
- Miami, Florida
- Conditions
- Measure Absorption of Vitamin D in Blood
- Interventions
- Vitafusion Extra Strength Vitamin D
- Dietary Supplement
- Lead sponsor
- Church & Dwight Company, Inc.
- Industry
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 31 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017
- U.S. locations
- 1
- States / cities
- Princeton, New Jersey