- Conditions
- Hypertension
- Interventions
- Vitamin D, calcitriol, Placebo
- Drug
- Lead sponsor
- Atlanta VA Medical Center
- Federal
- Eligibility
- 18 Years to 80 Years
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2011
- U.S. locations
- 1
- States / cities
- Decatur, Georgia
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 come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 1–24
of 553
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Osteopenia
- Interventions
- Calcium Carbonate, Vitamin D3, Risedronate, Bone-loading exercises
- Drug · Behavioral
- Lead sponsor
- University of Nebraska
- Other
- Eligibility
- 19 Years and older · Female only
- Enrollment
- 276 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2019
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Osteoporosis
- Interventions
- Small Particle Size Calcium Carbonate Supplement, Large Particle Size Calcium Carbonate Supplement, Vitamin D, Calcium Placebo
- Dietary Supplement
- Lead sponsor
- Purdue University
- Other
- Eligibility
- 12 Years to 14 Years · Female only
- Enrollment
- 55 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007
- U.S. locations
- 1
- States / cities
- West Lafayette, Indiana
- Conditions
- Ovarian Cancer
- Interventions
- Vitamin D3
- Drug
- Lead sponsor
- University of Oklahoma
- Other
- Eligibility
- 18 Years to 99 Years · Female only
- Enrollment
- 81 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2020
- U.S. locations
- 1
- States / cities
- Oklahoma City, Oklahoma
- Conditions
- Systemic Lupus Erythematosus
- Interventions
- Vitamin D3 6000 IU, Vitamin D3 400 IU
- Drug
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- NIH
- Eligibility
- 5 Years to 20 Years
- Enrollment
- 7 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2014
- U.S. locations
- 13
- States / cities
- Los Angeles, California • Palo Alto, California • San Francisco, California + 9 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
- Critically Ill, Acute Kidney Injury
- Interventions
- Calcifediol, Calcitriol, Placebos
- Drug
- Lead sponsor
- David Leaf
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 150 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2020
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency
- Interventions
- Vitamin D
- Dietary Supplement
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- Female only
- Enrollment
- 169 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015 – 2019
- U.S. locations
- 2
- States / cities
- Madison, Wisconsin • Milwaukee, Wisconsin
- Conditions
- Primary Hyperparathyroidism, Hypercalcemia, Vitamin D Deficiency, Osteoporosis, Osteopenia
- Interventions
- Placebo, Vitamin D3
- Dietary Supplement
- Lead sponsor
- Columbia University
- Other
- Eligibility
- 45 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2015
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Osteoporosis
- Interventions
- Alendronate
- Drug
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 5 Years to 15 Years
- Enrollment
- 22 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2009
- U.S. locations
- 1
- States / cities
- Charleston, South Carolina
- Conditions
- Vitamin D Deficiency
- Interventions
- cholecalciferol, 25(OH)D
- Dietary Supplement
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 20 Years to 60 Years
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Vitamin D Deficiency
- Interventions
- 400 IU Vitamin D3 (cholecalciferol), 2400 IU Vitamin D3 (cholecalciferol), 6400 IU Vitamin D3 (cholecalciferol)
- Drug
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 18 Years to 45 Years · Female only
- Enrollment
- 460 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2006 – 2012
- U.S. locations
- 2
- States / cities
- Rochester, New York • Charleston, South Carolina
- 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
- Health, Subjective
- Interventions
- Experimental supplement, Placebo
- Dietary Supplement
- Lead sponsor
- Auburn University
- Other
- Eligibility
- 21 Years to 40 Years · Female only
- Enrollment
- 94 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2019
- U.S. locations
- 1
- States / cities
- Auburn, Alabama
- Conditions
- Prostate Cancer
- Interventions
- calcitriol, mitoxantrone hydrochloride, prednisone
- Dietary Supplement · Drug
- Lead sponsor
- OHSU Knight Cancer Institute
- Other
- Eligibility
- 18 Years to 100 Years · Male only
- Enrollment
- 19 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2004 – 2006
- U.S. locations
- 1
- States / cities
- Portland, Oregon
- Conditions
- Muscle Strength, Sarcopenia
- Interventions
- Placebo, Vitamin D, Beta-hydroxy-Beta-methylbutyrate, Beta-hydroxy-Beta-methylbutyrate and Vitamin D
- Dietary Supplement · Drug
- Lead sponsor
- Metabolic Technologies Inc.
- Industry
- Eligibility
- 60 Years and older
- Enrollment
- 76 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2013
- U.S. locations
- 2
- States / cities
- Ames, Iowa • Brookings, South Dakota
- Conditions
- Breast Cancer
- Interventions
- Cholecalciferol
- Drug
- Lead sponsor
- Katherine D. Crew
- Other
- Eligibility
- 21 Years and older · Female only
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2013
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Hepatitis C
- Interventions
- Telaprevir, Peginterferon alfa-2a, Ribavirin, Vitamin D
- Drug · Dietary Supplement
- Lead sponsor
- Timothy Morgan, MD
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- Started 2013
- U.S. locations
- 4
- States / cities
- Long Beach, California • Minneapolis, Minnesota • Kansas City, Missouri + 1 more
- Conditions
- Vitamin D Deficiency, HIV
- Interventions
- Vitamin D
- Dietary Supplement
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 18 Years to 90 Years
- Enrollment
- 122 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2012
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Pregnancy
- Interventions
- Vitamin D dynamics-pregnant, Vitamin D dynamics-nonpregnant
- Other
- Lead sponsor
- Cornell University
- Other
- Eligibility
- 20 Years to 39 Years · Female only
- Enrollment
- 160 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2029
- U.S. locations
- 1
- States / cities
- Rochester, New York
- Conditions
- Ulcerative Colitis, Inflammatory Bowel Disease
- Interventions
- Vitamin D3, Placebo
- Drug · Other
- Lead sponsor
- University of Chicago
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2014
- U.S. locations
- 1
- States / cities
- Evanston, Illinois
- Conditions
- Prostate Cancer
- Interventions
- Vitamin D, soy
- Dietary Supplement
- Lead sponsor
- Wake Forest University Health Sciences
- Other
- Eligibility
- 18 Years to 120 Years · Male only
- Enrollment
- 26 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2012
- U.S. locations
- 1
- States / cities
- Winston-Salem, North Carolina
- Conditions
- Bioequivalence of Vitamin D in Healthy Adults
- Interventions
- vitamin D3
- Dietary Supplement
- Lead sponsor
- Church & Dwight Company, Inc.
- Industry
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 9 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2017
- U.S. locations
- 1
- States / cities
- Princeton, New Jersey
- Conditions
- Localized Prostate Carcinoma, Stage IV Prostate Cancer AJCC v8, Locally Recurrent Prostate Carcinoma, Metastatic Prostate Carcinoma
- Interventions
- Cholecalciferol, Quality-of-Life Assessment, Biospecimen Collection
- Dietary Supplement · Other · Procedure
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 18 Years and older · Male only
- Enrollment
- 220 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2029
- U.S. locations
- 2
- States / cities
- Scottsdale, Arizona • Jacksonville, Florida