- 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
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 are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
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Showing 25–48
of 24
matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
- Conditions
- IBD, Ulcerative Colitis, Crohn Disease
- Interventions
- Vitamin D3
- Drug
- Lead sponsor
- Boston Children's Hospital
- Other
- Eligibility
- 7 Years to 25 Years
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2023
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Cystic Fibrosis, Dysbiosis
- Interventions
- Vitamin D3, Placebo vitamin D3, Inulin, Placebo Inulin
- Drug
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2022
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Colon Cancer, Rectal Cancer
- Interventions
- cholecalciferol
- Dietary Supplement
- Lead sponsor
- Legacy Health System
- Other
- Eligibility
- 18 Years to 99 Years
- Enrollment
- 70 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2020
- U.S. locations
- 3
- States / cities
- Gresham, Oregon • Portland, Oregon • Tualatin, Oregon
- Conditions
- Osteoporosis, Prostate Cancer
- Interventions
- Calcium, Zoledronic acid, radiation therapy, LHRH, Vitamin D
- Dietary Supplement · Radiation · Drug
- Lead sponsor
- Radiation Therapy Oncology Group
- Network
- Eligibility
- 18 Years and older · Male only
- Enrollment
- 109 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2014
- U.S. locations
- 80
- States / cities
- Chico, California • Los Angeles, California • Pomona, California + 66 more
- Conditions
- Diabetes, Executive Dysfunction
- Interventions
- Cholecalciferol
- Drug
- Lead sponsor
- Loyola University
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 56 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2018
- U.S. locations
- 1
- States / cities
- Maywood, Illinois
- 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
- Cognitive Decline
- Interventions
- 540,000 IU vitamin D3, Placebo
- Drug
- Lead sponsor
- Vanderbilt University Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 95 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2020
- U.S. locations
- 7
- States / cities
- Aurora, Colorado • Boston, Massachusetts • New York, New York + 3 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
- Metastatic Melanoma
- Interventions
- Calcitriol, Temozolomide
- Dietary Supplement · Drug
- Lead sponsor
- Northwestern University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2012
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Hypocalcemia, Rickets
- Interventions
- 1,25-Dihydroxycholecalciferol
- Drug
- Lead sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- NIH
- Eligibility
- Not listed
- Enrollment
- 6 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 1976 – 2009
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- 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
- Leukemia, Lymphoma
- Interventions
- Actonel (Risedronate), Calcium, Vitamin D
- Drug · Dietary Supplement
- Lead sponsor
- M.D. Anderson Cancer Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 72 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2004 – 2014
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Chronic Kidney Disease, Secondary Hyperparathyroidism
- Interventions
- Cinacalcet HCl, Standard of Care
- Drug · Dietary Supplement
- Lead sponsor
- Amgen
- Industry
- Eligibility
- 6 Years to 17 Years
- Enrollment
- 55 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2016
- U.S. locations
- 26
- States / cities
- Los Angeles, California • Wilmington, Delaware • Atlanta, Georgia + 22 more
- Conditions
- Healthy, no Evidence of Disease
- Interventions
- cholecalciferol, questionnaire administration, trivalent influenza vaccine
- Dietary Supplement · Other · Biological
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 11 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2015
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- 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
- 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
- 23
- States / cities
- Little Rock, Arkansas • Los Angeles, California • Sacramento, California + 20 more
- 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
- Conditions
- Vitamin D Deficiency, Burns
- Interventions
- Ergocalciferol Capsules
- Drug
- Lead sponsor
- University of Texas Southwestern Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 48 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2025
- U.S. locations
- 1
- States / cities
- Dallas, Texas
- 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
- Diabetes Mellitus, Type 1, Hypoglycemia, Diabetes Mellitus, Diabetes, Autoimmune
- Interventions
- Cholecalciferol, Omega 3 fatty acid
- Drug
- Lead sponsor
- Rodolfo Alejandro
- Other
- Eligibility
- 6 Years to 65 Years
- Enrollment
- 27 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2024
- U.S. locations
- 1
- States / cities
- Miami, Florida
- Conditions
- Parkinson Disease, Accidental Falls
- Interventions
- Vitamin D3, calcium, Placebo
- Drug · Dietary Supplement · Other
- Lead sponsor
- VA Office of Research and Development
- Federal
- Eligibility
- 50 Years to 99 Years
- Enrollment
- 101 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 1
- States / cities
- Portland, Oregon
- Conditions
- Asthma, Vitamin D Deficiency
- Interventions
- Vitamin D2 + vitamin D3, Vitamin D3
- Drug
- Lead sponsor
- Nationwide Children's Hospital
- Other
- Eligibility
- 8 Years to 17 Years
- Enrollment
- 18 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- Columbus, Ohio
- 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