- Conditions
- Vitamin D Deficiency, Nephrolithiasis
- Interventions
- vitamin D (ergocalciferol)
- Drug
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2010
- 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 49–72
of 130
matching trials from the live ClinicalTrials.gov search.
- 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
- Stage IV Colon Cancer, Stage IV Rectal Cancer
- Interventions
- leucovorin calcium, bevacizumab, cholecalciferol, fluorouracil, oxaliplatin, pharmacological study
- Drug · Biological · Dietary Supplement + 1 more
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years to 79 Years
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2012
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- 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
- Systemic Lupus Erythematosus
- Interventions
- Vitamin D3 6000 IU, Vitamin D3 400 IU
- Drug
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- NIH
- Eligibility
- 5 Years to 20 Years
- Enrollment
- 7 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2014
- U.S. locations
- 13
- States / cities
- Los Angeles, California • Palo Alto, California • San Francisco, California + 9 more
- Conditions
- Vitamin D Deficiency
- Interventions
- High dose Vitamin D3, Low dose Vitamin D3
- Dietary Supplement
- Lead sponsor
- Texas Tech University Health Sciences Center
- Other
- Eligibility
- 65 Years to 89 Years
- Enrollment
- 14 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2019
- U.S. locations
- 1
- States / cities
- Lubbock, Texas
- Conditions
- COVID-19, Vitamin D Deficiency, Respiratory Viral Infection
- Interventions
- Daily Vitamin D3, Daily placebo, Bolus vitamin D3, Bolus placebo
- Drug
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 95 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2020 – 2023
- U.S. locations
- 1
- States / cities
- Charleston, South Carolina
- Conditions
- Multiple Sclerosis, Vitamin D Deficiency
- Interventions
- Cholecalciferol
- Drug
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2013
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Crohn's Disease, Vitamin D Deficiency
- Interventions
- Cholecalciferol 10,000 IU, Cholecalciferol 400 IU
- Drug
- Lead sponsor
- University of Michigan
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 11 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2016
- U.S. locations
- 4
- States / cities
- Indianapolis, Indiana • Iowa City, Iowa • Ann Arbor, Michigan + 1 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
- Graves Disease, Graves' Disease, Hyperthyroidism
- Interventions
- Ergocalciferol 50,000 IU, Methimazole
- Drug
- Lead sponsor
- Northwell Health
- Other
- Eligibility
- 9 Years to 17 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2025 – 2027
- U.S. locations
- 1
- States / cities
- New Hyde Park, New York
- Conditions
- Chronic Kidney Disease, Secondary Hyperparathyroidism, Chronic Renal Insufficiency, Chronic Renal Failure
- Interventions
- CTA018 Injection
- Drug
- Lead sponsor
- OPKO IP Holdings II, Inc.
- Industry
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 41 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2010
- U.S. locations
- 5
- States / cities
- Pembroke Pines, Florida • Meridian, Idaho • Springfield, Massachusetts + 2 more
- 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
- Fracture
- Interventions
- Vitamin D3, Placebo
- Drug · Other
- Lead sponsor
- University of Maryland, Baltimore
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 102 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2021
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Vitamin D Deficiency
- Interventions
- Treatment
- Drug
- Lead sponsor
- Johns Hopkins All Children's Hospital
- Other
- Eligibility
- 36 Months to 18 Years
- Enrollment
- 26 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- St. Petersburg, Florida
- Conditions
- Breast Neoplasms, Bone and Bones
- Interventions
- Calcitriol, Exercise, Multivitamin
- Drug · Behavioral · Dietary Supplement
- Lead sponsor
- University of Rochester
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 41 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2018
- U.S. locations
- 1
- States / cities
- Rochester, New York
- Conditions
- Obesity, Insulin Resistance, Insulin Sensitivity, Beta-Cell Dysfunction, Prediabetes
- Interventions
- Placebo, Low-Dose Vitamin K2 Supplement (menaquinone-7; 90-mcg/d), High-Dose Vitamin K2 Supplement (menaquinone-7; 180-mcg/d)
- Dietary Supplement
- Lead sponsor
- Augusta University
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015 – 2020
- U.S. locations
- 1
- States / cities
- Augusta, Georgia
- 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
- Magnesium Deficiency, Calcium Metabolism Disorders
- Interventions
- vitamin D3
- Dietary Supplement
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 30 Years to 75 Years · Female only
- Enrollment
- 39 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2014
- U.S. locations
- 1
- States / cities
- Madison, Wisconsin
- 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
- Breast Cancer
- Interventions
- Calcitriol
- Drug
- Lead sponsor
- University of Rochester
- Other
- Eligibility
- 18 Years to 88 Years · Female only
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2021
- U.S. locations
- 1
- States / cities
- Rochester, New York
- Conditions
- Neurofibromatosis Type 1 (NF1)
- Interventions
- Cholecalciferol
- Drug
- Lead sponsor
- University of Utah
- Other
- Eligibility
- 25 Years to 40 Years
- Enrollment
- 26 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2022
- U.S. locations
- 2
- States / cities
- Cincinnati, Ohio • Salt Lake City, Utah
- Conditions
- Adult Acute Megakaryoblastic Leukemia (M7), Adult Acute Monoblastic Leukemia (M5a), Adult Acute Monocytic Leukemia (M5b), Adult Acute Myeloblastic Leukemia With Maturation (M2), Adult Acute Myeloblastic Leukemia Without Maturation (M1), Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities, Adult Acute Myeloid Leukemia With Del(5q), Adult Acute Myeloid Leukemia With Inv(16)(p13;q22), Adult Acute Myeloid Leukemia With t(16;16)(p13;q22), Adult Acute Myeloid Leukemia With t(8;21)(q22;q22), Adult Acute Myelomonocytic Leukemia (M4), Adult Erythroleukemia (M6a), Adult Pure Erythroid Leukemia (M6b), Untreated Adult Acute Myeloid Leukemia
- Interventions
- cholecalciferol, pharmacological study, laboratory biomarker analysis
- Dietary Supplement · Other
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- Conditions
- Metastatic Colorectal Cancer
- Interventions
- FOLFOX + bevacizumab, Vitamin D
- Drug · Dietary Supplement
- Lead sponsor
- Dana-Farber Cancer Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 139 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2019
- U.S. locations
- 18
- States / cities
- Boise, Idaho • Fruitland, Idaho • Meridian, Idaho + 13 more