- Conditions
- Vitamin D Deficiency
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Tufts University
- Other
- Eligibility
- 9 Years to 14 Years
- Enrollment
- 691 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2013
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
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 1–24
of 429
matching trials from the live ClinicalTrials.gov search.
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- Conditions
- Urinary Incontinence, Vitamin D Deficiency
- Interventions
- Vitamin D3 50,000 IU, Placebo
- Dietary Supplement · Other
- Lead sponsor
- University of Alabama at Birmingham
- Other
- Eligibility
- 50 Years and older · Female only
- Enrollment
- 243 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2017
- U.S. locations
- 1
- States / cities
- Birmingham, Alabama
- Conditions
- Insulin Sensitivity
- Interventions
- Ergocalciferols, Placebo
- Drug
- Lead sponsor
- Texas Tech University Health Sciences Center
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2012
- U.S. locations
- 1
- States / cities
- Odessa, Texas
- Conditions
- Hypovitaminosis D
- Interventions
- Vitamin D, Placebo candy
- Dietary Supplement · Other
- Lead sponsor
- University of New Mexico
- Other
- Eligibility
- 5 Years to 14 Years
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Albuquerque, New Mexico
- Conditions
- Vitamin B6 Deficiency
- Interventions
- Vitamin B6, Infusion of labeled serine, methionine and leucine
- Dietary Supplement · Procedure
- Lead sponsor
- University of Florida
- Other
- Eligibility
- 20 Years to 40 Years · Female only
- Enrollment
- 13 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2014
- U.S. locations
- 1
- States / cities
- Gainesville, Florida
- Conditions
- Hypophosphatemic Rickets, X-Linked Dominant
- Interventions
- Cinacalcet
- Drug
- Lead sponsor
- Children's Mercy Hospital Kansas City
- Other
- Eligibility
- 5 Years and older
- Enrollment
- 8 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2008
- U.S. locations
- 1
- States / cities
- Kansas City, Missouri
- Conditions
- HIV Infections
- Interventions
- Thiamine hydrochloride, Riboflavin
- Drug
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- NIH
- Eligibility
- 13 Years and older
- Enrollment
- 225 participants
- Healthy volunteers
- Healthy volunteers not accepted
- U.S. locations
- 3
- States / cities
- New York, New York • Chapel Hill, North Carolina • Cleveland, Ohio
- Conditions
- Vitamin D Deficiency, Pregnancy
- Interventions
- cholecalciferol (vitamin D3), cholecalciferol
- Drug
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 16 Years to 45 Years · Female only
- Enrollment
- 564 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2009
- U.S. locations
- 1
- States / cities
- Columbia, South Carolina
- Conditions
- SCAD, Addison Disease, Ankylosing Spondylitis, Antiphospholipid Antibody Syndrome, Celiac Disease, Crohn Disease, Dermatomyositis, Polymyositis, Guillain-Barre Syndrome, Hepatitis, Autoimmune, Graves Disease, Hashimoto Thyroiditis, Multiple Sclerosis, Myasthenia Gravis, Pernicious Anemia, Polymyalgia Rheumatica, Primary Biliary Cirrhosis, Psoriasis, Rheumatoid Arthritis, Systemic Sclerosis, Sjögren Syndrome, Systemic Lupus Erythematosus, Takayasu Arteritis, Type 1 Diabetes Mellitus, Ulcerative Colitis, Uveitis, Vasculitis, Vitiligo, Raynaud
- Interventions
- Not listed
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 18 Years to 110 Years
- Enrollment
- 114 participants
- Timeline
- 1995 – 2020
- U.S. locations
- 1
- States / cities
- Rochester, Minnesota
- Conditions
- Vitamin D Deficiency
- Interventions
- Cholecalciferol
- Dietary Supplement
- Lead sponsor
- Children's Hospital of Philadelphia
- Other
- Eligibility
- 12 Years to 17 Years
- Enrollment
- 39 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2012
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- Conditions
- Hypercholesterolemia, Hyperlipidemia, Vitamin Deficiency, Obesity
- Interventions
- Fortified eggs, Intermittent fasting, Non-egg supplemented, Usual care diet
- Dietary Supplement · Behavioral
- Lead sponsor
- Duke University
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 140 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2022
- U.S. locations
- 1
- States / cities
- Durham, North Carolina
- Conditions
- Ovarian Cancer, Breast Cancer, Folic Acid Deficiency
- Interventions
- Folic Acid Tablet
- Drug
- Lead sponsor
- Rush University Medical Center
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2025
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Chronic Kidney Disease, End Stage Kidney Disease, Chronic Kidney Disease Mineral and Bone Disorder, Renal Osteodystrophy, Secondary Hyperparathyroidism
- Interventions
- Kidney disease
- Other
- Lead sponsor
- Columbia University
- Other
- Eligibility
- 40 Years and older
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2020
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Vitamin D Deficiency (10 ng/mL to 30 ng/mL)
- Interventions
- Vitamin D
- Dietary Supplement
- Lead sponsor
- University of Florida
- Other
- Eligibility
- 70 Years and older
- Enrollment
- 25 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2016
- U.S. locations
- 1
- States / cities
- Gainesville, Florida
- Conditions
- Vitamin D Deficiency, Obesity, Type 2 Diabetes Mellitus, Intestinal Permeability
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Fred Hutchinson Cancer Center
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 18 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2013
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- 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
- Conditions
- Vitamin D Deficiency
- Interventions
- Ergocalciferol, Ergocalciferol placebo
- Dietary Supplement
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 92 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2006 – 2008
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency
- Interventions
- Vitamin D-enriched mushrooms, Study Powder
- Other
- Lead sponsor
- Purdue University
- Other
- Eligibility
- 30 Years to 69 Years
- Enrollment
- 36 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022 – 2024
- U.S. locations
- 1
- States / cities
- West Lafayette, Indiana
- Conditions
- Vitamin D Deficiency
- Interventions
- Mushroom Vitamin D2, Cholecalciferol, Vitamin D2 - Ergocalciferol, Mushroom Extract
- Dietary Supplement
- Lead sponsor
- Boston University
- Other
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency, Rickets, Infant Nutrition Disorders
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 1 Month to 50 Years
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Rochester, Minnesota
- Conditions
- Autosomal Dominant Hypophosphatemic Rickets
- Interventions
- Iron
- Dietary Supplement
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 25 Months and older
- Enrollment
- 8 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2019
- U.S. locations
- 1
- States / cities
- Indianapolis, Indiana
- Conditions
- Vitamin D Deficiency, Orthostatic Intolerance, Nausea
- Interventions
- vitamin D supplement
- Dietary Supplement
- Lead sponsor
- Wake Forest University Health Sciences
- Other
- Eligibility
- 10 Years to 18 Years
- Enrollment
- 31 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2022
- U.S. locations
- 1
- States / cities
- Winston-Salem, North Carolina
- Conditions
- Vitamin B6 Deficiency
- Interventions
- Arm 1 glycine and leucine, Arm 2 Intervention of Serine and methionine infusion
- Dietary Supplement
- Lead sponsor
- University of Florida
- Other
- Eligibility
- 20 Years to 40 Years
- Enrollment
- 45 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2010
- U.S. locations
- 1
- States / cities
- Gainesville, Florida
- 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