- Conditions
- Vitamin D Deficiency
- Interventions
- Dose 1, Dose 2
- Drug
- Lead sponsor
- University of Minnesota
- Other
- Eligibility
- 18 Years to 85 Years
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2017
- U.S. locations
- 1
- States / cities
- Saint Paul, Minnesota
Search Results
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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
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- Conditions
- Vitamin D Deficiency, Cardiovascular Diseases
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 55 Years to 75 Years · Female only
- Enrollment
- 99 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2014
- U.S. locations
- 3
- States / cities
- Bowler, Wisconsin • Lac du Flambeau, Wisconsin • Madison, Wisconsin
- Conditions
- Vitamin D Deficiency
- Interventions
- Vitamin D and Calcium
- Dietary Supplement
- Lead sponsor
- CONRAD
- Other
- Eligibility
- 21 Years to 50 Years · Female only
- Enrollment
- 22 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2015
- U.S. locations
- 1
- States / cities
- Norfolk, Virginia
- Conditions
- Triple Negative Breast Cancer, Vitamin D Deficiency, Invasive Breast Cancer
- Interventions
- Standard of Care Neoadjuvant Chemotherapy (NAC), Vitamin D3, Drug Diary
- Drug · Dietary Supplement · Other
- Lead sponsor
- Wake Forest University Health Sciences
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2026
- U.S. locations
- 1
- States / cities
- Winston-Salem, North Carolina
- Conditions
- Rheumatoid Arthritis, Hypovitaminosis D
- Interventions
- Vitamin D, placebo
- Dietary Supplement
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 18 Years to 90 Years
- Enrollment
- 22 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2009
- U.S. locations
- 1
- States / cities
- Madison, Wisconsin
- Conditions
- Hypophosphatasia
- Interventions
- asfotase alfa
- Biological
- Lead sponsor
- Alexion Pharmaceuticals, Inc.
- Industry
- Eligibility
- 24 Weeks to 42 Months
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2016
- U.S. locations
- 5
- States / cities
- Wilmington, Delaware • Springfield, Missouri • Omaha, Nebraska + 2 more
- Conditions
- Renal Osteodystrophy
- Interventions
- Not listed
- Lead sponsor
- Hartmut Malluche, MD
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 464 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2014
- U.S. locations
- 1
- States / cities
- Lexington, Kentucky
- Conditions
- Vitamin B 12 Deficiency
- Interventions
- Cyanocobalamin, Placebo
- Drug
- Lead sponsor
- University of Southern California
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2019
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Vitamin D Deficiency
- Interventions
- Vitamin D 10000 UNT, Vitamin D 5000 UNT
- Drug
- Lead sponsor
- Virginia Polytechnic Institute and State University
- Other
- Eligibility
- 18 Years to 30 Years
- Enrollment
- 68 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- Blacksburg, Virginia
- Conditions
- Vitamin D Deficiency
- Interventions
- Not listed
- Lead sponsor
- Hospital for Special Surgery, New York
- Other
- Eligibility
- 40 Years and older
- Enrollment
- 219 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2014
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Hypophosphatasia (HPP)
- Interventions
- asfotase alfa
- Biological
- Lead sponsor
- Alexion Pharmaceuticals, Inc.
- Industry
- Eligibility
- Up to 36 Months
- Enrollment
- 11 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2010
- U.S. locations
- 6
- States / cities
- Little Rock, Arkansas • Wilmington, Delaware • Springfield, Missouri + 3 more
- Conditions
- Macrocytic Anemia With Vitamin B12 Deficiency
- Interventions
- Vitamin B12
- Dietary Supplement
- Lead sponsor
- James J. Peters Veterans Affairs Medical Center
- Federal
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- The Bronx, New York
- Conditions
- Hypophosphatasia (HPP)
- Interventions
- Asfotase Alfa
- Biological
- Lead sponsor
- Alexion Pharmaceuticals, Inc.
- Industry
- Eligibility
- 5 Years to 12 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2016
- U.S. locations
- 1
- States / cities
- St Louis, Missouri
- Conditions
- Vitamin D Deficiency Disease
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Madigan Army Medical Center
- Federal
- Eligibility
- 18 Years and older
- Enrollment
- 131 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2018
- U.S. locations
- 1
- States / cities
- Tacoma, Washington
- Conditions
- Chronic Kidney Disease (Stage 3-4), Chronic Kidney Disease Mineral and Bone Disorder
- Interventions
- Dietary Phosphorus Intake
- Dietary Supplement
- Lead sponsor
- University of Texas Southwestern Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 60 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Dallas, Texas
- 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
- Complications of Bariatric Procedures, Avitaminosis
- Interventions
- Chewable Multivitamin with Iron, PatchMD Vitamin D3/Calcium Patch, PatchMD Multivitamin Patch, PatchMD B12 Energy Plus Patch, Chewable Calcium, Quick Dissolve B12
- Dietary Supplement
- Lead sponsor
- California State Polytechnic University, Pomona
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2017
- U.S. locations
- 1
- States / cities
- Brea, California
- Conditions
- Cancer Cachexia, Vitamin D Deficiency
- Interventions
- Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- David Travis Thomas
- Other
- Eligibility
- 45 Years to 75 Years
- Enrollment
- 1 participant
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018
- U.S. locations
- 1
- States / cities
- Lexington, Kentucky
- Conditions
- Renal Osteodystrophy
- Interventions
- doxercalciferol, Cholecalciferol
- Drug
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 18 Years to 82 Years
- Enrollment
- 55 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2009
- U.S. locations
- 1
- States / cities
- Indianapolis, Indiana
- Conditions
- Systemic Lupus Erythematosus, SLE, Lupus
- Interventions
- Vitamin D3, Vitamin D3 placebo
- Drug
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- NIH
- Eligibility
- 18 Years and older
- Enrollment
- 57 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2011
- U.S. locations
- 8
- States / cities
- Birmingham, Alabama • San Francisco, California • Boston, Massachusetts + 5 more
- Conditions
- Osteoporosis, Vascular Calcification, Inflammation
- Interventions
- Vitamin K
- Drug
- Lead sponsor
- National Institute on Aging (NIA)
- NIH
- Eligibility
- 60 Years to 80 Years
- Enrollment
- 452 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2001 – 2006
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Secondary Hyperparathyroidism
- Interventions
- Teriparatide
- Drug
- Lead sponsor
- University of Maryland, Baltimore
- Other
- Eligibility
- 40 Years to 59 Years · Female only
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2008
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Vitamin D Deficiency, Secondary Hyperparathyroidism, Obesity
- Interventions
- Ergocalciferol, Cholecalciferol
- Drug
- Lead sponsor
- Weill Medical College of Cornell University
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 60 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2006 – 2007
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Obesity, Endothelial Dysfunction, Vitamin D Deficiency
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 12 Years to 18 Years
- Enrollment
- 19 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Rochester, Minnesota