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Showing 1–24 of 375 matching trials from the live ClinicalTrials.gov search.

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Filters: Condition: Hypovitaminosis Clear all

Conditions: Neural Tube Defects, Folic Acid Deficiency, Spina Bifida, Anencephaly-Spina Bifida
Interventions: Folic acid fortified iodized salt; Dietary Supplement
Lead sponsor: Hydrocephalus and Neuroscience Institute; Other
Eligibility: 18 Years to 45 Years · Female only
Enrollment: 80 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2022
U.S. locations: 1
States / cities: Orlando, Florida

Conditions: Cystic Fibrosis
Interventions: Vitamin D Powder, Vitamin D Oil; Dietary Supplement
Lead sponsor: Emory University; Other
Eligibility: 18 Years to 59 Years
Enrollment: 17 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2015
U.S. locations: 1
States / cities: Atlanta, Georgia

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: Vitamin D Deficiency
Interventions: Vitamin D2 in orange juice, Vitamin D3 in orange juice, Vitamin D2, Vitamin D3, Placebo; Dietary Supplement · Other
Lead sponsor: Boston University; Other
Eligibility: 18 Years and older
Enrollment: 86 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2006 – 2007
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Vitamin D Deficiency
Interventions: Not listed
Lead sponsor: The Cooper Health System; Other
Eligibility: 18 Years and older
Enrollment: 9,000 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2025
U.S. locations: 1
States / cities: Camden, New Jersey

Conditions: Chronic Kidney Disease, Vitamin D Deficiency
Interventions: Ergocalciferol, Calcitriol; Drug
Lead sponsor: Massachusetts General Hospital; Other
Eligibility: 18 Years to 80 Years
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009 – 2014
U.S. locations: 1
States / cities: Cambridge, Massachusetts

Conditions: Vitamin D Insufficiency, Vitamin D Deficiency
Interventions: Cholecalciferol (vitamin D3); Dietary Supplement
Lead sponsor: University of Wisconsin, Madison; Other
Eligibility: 55 Years and older · Female only
Enrollment: 108 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2007 – 2011
U.S. locations: 1
States / cities: Madison, Wisconsin

Conditions: Vitamin D Deficiency
Interventions: cholecalciferol (vitamin D); Dietary Supplement
Lead sponsor: University of Miami; Other
Eligibility: 65 Years to 95 Years
Enrollment: 105 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2008 – 2009
U.S. locations: 1
States / cities: Miami, Florida

Conditions: Hypovitaminosis D
Interventions: Standing Phototherapy Kiosk, D3 Oral supplement; Device · Dietary Supplement
Lead sponsor: Madigan Army Medical Center; Federal
Eligibility: 18 Years to 69 Years
Enrollment: 106 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2018 – 2019
U.S. locations: 1
States / cities: Tacoma, Washington

Conditions: Obesity, Vitamin D Deficiency
Interventions: Ergocalciferols; Drug
Lead sponsor: Walter Reed National Military Medical Center; Federal
Eligibility: 18 Years to 65 Years
Enrollment: 44 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2011 – 2017
U.S. locations: 1
States / cities: Bethesda, Maryland

Conditions: Vitamin D Deficiency, Obesity
Interventions: Not listed
Lead sponsor: University of Massachusetts, Worcester; Other
Eligibility: 3 Years to 12 Years
Enrollment: 45 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2008 – 2012
U.S. locations: 1
States / cities: Worcester, Massachusetts

Conditions: Cardiovascular Disease, Vitamin D Deficiency
Interventions: Vitamin D3, Placebo; Dietary Supplement
Lead sponsor: Intermountain Health Care, Inc.; Other
Eligibility: 18 Years and older
Enrollment: 150 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2015 – 2020
U.S. locations: 1
States / cities: Murray, Utah

Conditions: Vitamin D Insufficiency, Vitamin D Deficiency
Interventions: Pharmacist Education about Vitamin D; Behavioral
Lead sponsor: University of Colorado, Denver; Other
Eligibility: 65 Years to 89 Years
Enrollment: 80 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2005 – 2006
U.S. locations: 1
States / cities: Aurora, Colorado

Conditions: Chronic Kidney Disease
Interventions: Not listed
Lead sponsor: Saint Louis VA Medical Center; Federal
Eligibility: 18 Years to 80 Years
Healthy volunteers: Healthy volunteers not accepted
U.S. locations: 1
States / cities: St Louis, Missouri

Conditions: Vitamin D Deficiency, Obesity, Insulin Resistance
Interventions: Not listed
Lead sponsor: University of Alabama at Birmingham; Other
Eligibility: 10 Years to 18 Years · Female only
Enrollment: 114 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2007 – 2010
U.S. locations: 1
States / cities: Birmingham, Alabama

Conditions: Vitamin D Deficiency
Interventions: cholecalciferol.; Drug
Lead sponsor: Creighton University; Other
Eligibility: 19 Years and older
Enrollment: 40 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2006 – 2007
U.S. locations: 1
States / cities: Omaha, Nebraska

Conditions: Rickets
Interventions: Not listed
Lead sponsor: Agency for Healthcare Research and Quality (AHRQ); Federal
Eligibility: 6 Months to 15 Months
Enrollment: 246 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2006 – 2008
U.S. locations: 1
States / cities: Seattle, Washington

Conditions: Folate Deficiency
Interventions: Methyl Folate, Placebo; Dietary Supplement
Lead sponsor: Oklahoma State University Center for Health Sciences; Other
Eligibility: 18 Years to 24 Years · Female only
Enrollment: 20 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2019 – 2024
U.S. locations: 1
States / cities: Tulsa, Oklahoma

Conditions: Septic Shock, Shock, Septic, Lactic Acidosis, Thiamine Deficiency
Interventions: Thiamine, Placebos; Drug
Lead sponsor: The Cleveland Clinic; Other
Eligibility: 18 Years and older
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2019
U.S. locations: 1
States / cities: Weston, Florida

Conditions: Intestinal Failure-associated Liver Disease
Interventions: Not listed
Lead sponsor: Protara Therapeutics; Industry
Eligibility: 12 Years to 80 Years
Enrollment: 80 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2021 – 2023
U.S. locations: 10
States / cities: Los Angeles, California • Kissimmee, Florida • Chicago, Illinois + 7 more

Conditions: Osteomalacia
Interventions: 68Ga-DOTATATE PET/CT; Combination Product
Lead sponsor: Mayo Clinic; Other
Eligibility: 18 Years and older
Enrollment: 18 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2019 – 2023
U.S. locations: 1
States / cities: Rochester, Minnesota

Conditions: Hypocalcemia, Pseudohypoparathyroidism, Osteomalacia, Rickets, Pseudopseudohpoparathyroidism
Interventions: Not listed
Lead sponsor: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK); NIH
Eligibility: 2 Months to 100 Years
Enrollment: 70 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 1997 – 2022
U.S. locations: 1
States / cities: Bethesda, Maryland

Conditions: Graft Vs Host Disease, Vitamin A Deficiency, Vitamin D Deficiency
Interventions: Vitamin A, Placebo; Drug · Other
Lead sponsor: Children's Hospital Medical Center, Cincinnati; Other
Eligibility: 18 Years and older
Enrollment: 190 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2029
U.S. locations: 3
States / cities: Tampa, Florida • Buffalo, New York • Columbus, Ohio

Conditions: Obese, Vitamin D Deficiency, Low HDL
Interventions: Vitamin D; Dietary Supplement
Lead sponsor: Xiang-An Li; Other
Eligibility: 5 Years to 18 Years
Enrollment: 1 participant
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2017
U.S. locations: 1
States / cities: Lexington, Kentucky