- 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
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 120
matching trials from the live ClinicalTrials.gov search.
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- Conditions
- Diabetes Mellitus, Vitamin D Deficiency
- Interventions
- Vitamin D
- Dietary Supplement
- Lead sponsor
- Ascension Health
- Industry
- Eligibility
- 34 Years to 69 Years
- Enrollment
- 150 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2012
- U.S. locations
- 1
- States / cities
- Flint, Michigan
- 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
- Respiratory Failure
- Interventions
- Enteral Vitamin D3 50,000 IU, Enteral Vitamin D3 100,000IU, Inactive substance
- Drug · Other
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 31 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2014
- U.S. locations
- 2
- States / cities
- Atlanta, Georgia
- 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
- Morbid Obesity, Vitamin D Deficiency
- Interventions
- vitamin D3 (Replesta), vitamin D
- Dietary Supplement
- Lead sponsor
- Texas Tech University
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 31 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Lubbock, Texas
- 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
- Acute Respiratory Distress Syndrome, Vitamin D Deficiency, Critical Illness
- Interventions
- Vitamin D3, Placebo
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 1,358 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2018
- U.S. locations
- 47
- States / cities
- Fresno, California • Los Angeles, California • Sacramento, California + 34 more
- 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
- 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
- Covid19, Corona Virus Infection, Autoimmune Diseases, Coagulation Disorder, Blood
- Interventions
- Narrow Band ultraviolet B-Band Light, non Narrow Band ultraviolet B-Band Light
- Device
- Lead sponsor
- Cytokind, Inc.
- Industry
- Eligibility
- 50 Years to 110 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021
- U.S. locations
- 1
- States / cities
- New Orleans, Louisiana
- Conditions
- Nutrition, Healthy
- Interventions
- Experimental Oil with Phospholipids, Control Polyunsaturated Oil Blend
- Other
- Lead sponsor
- Abbott Nutrition
- Industry
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 26 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024
- U.S. locations
- 1
- States / cities
- North Canton, Ohio
- Conditions
- Diabetic Kidney Disease
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 54 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2013
- 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
- Hypertension, Vitamin D Deficiency, Pre-Hypertension
- Interventions
- Cholecalciferol
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 534 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2013
- U.S. locations
- 3
- States / cities
- Hartford, Connecticut • Boston, Massachusetts • Minneapolis, Minnesota
- Conditions
- Age-Related Osteoporosis
- Interventions
- Teriparatide, Alendronate
- Drug
- Lead sponsor
- Madhumathi Rao
- Other
- Eligibility
- 40 Years and older
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2027
- U.S. locations
- 1
- States / cities
- Lexington, Kentucky
- 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
- Conditions
- Cutaneous Lupus Erythematosus
- Interventions
- vitamin D
- Dietary Supplement
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 3 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2013
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Breast Cancer
- Interventions
- Cholecalciferol, Placebo capsule
- Drug
- Lead sponsor
- Columbia University
- Other
- Eligibility
- 21 Years and older · Female only
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2015
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Chronic Lymphocytic Leukemia, Non-Hodgkin Lymphoma, Untreated Chronic Lymphocytic Leukemia, Vitamin D Deficiency
- Interventions
- Cholecalciferol, Laboratory Biomarker Analysis
- Dietary Supplement · Other
- Lead sponsor
- University of Nebraska
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 197 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2025
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Cluster Headache
- Interventions
- Vitamin D, multivitamin, Placebo
- Dietary Supplement
- Lead sponsor
- The University of Texas Health Science Center, Houston
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 27 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2024
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Vitamin D Deficiency
- Interventions
- Prenatal Vitamin, Cholecalciferol (Vitamin D3)
- Drug
- Lead sponsor
- Children's Hospital Medical Center, Cincinnati
- Other
- Eligibility
- 18 Years to 45 Years · Female only
- Enrollment
- 192 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2012
- U.S. locations
- 1
- States / cities
- Cincinnati, Ohio
- 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
- Short Segment Barrett's Esophagus, Long Segment Barrett's Esophagus
- Interventions
- Omeprazole, Vitamin D3, upper endoscopy, Metformin
- Drug · Procedure
- Lead sponsor
- Case Comprehensive Cancer Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 26 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2016
- U.S. locations
- 3
- States / cities
- Beachwood, Ohio • Cleveland, Ohio