- Conditions
- Insulin Resistance, Obesity, Vitamin D25 Insufficiency
- Interventions
- Vitamin D drops, Placebo drops
- Drug
- Lead sponsor
- Weill Medical College of Cornell University
- Other
- Eligibility
- 7 Years to 18 Years
- Enrollment
- 110 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2012
- U.S. locations
- 1
- States / cities
- New York, New York
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 145–168
of 407
matching trials from the live ClinicalTrials.gov search.
- Conditions
- SARS-CoV Infection
- Interventions
- Vitamin D3 or Placebo, Doctella telehealth monitoring
- Drug · Device
- Lead sponsor
- University Hospitals Cleveland Medical Center
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2021
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Cancer
- Interventions
- Vitamin D3, Calcium carbonate
- Dietary Supplement
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 55 Years and older · Female only
- Enrollment
- 2,303 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2015
- U.S. locations
- 1
- States / cities
- Fremont, Nebraska
- Conditions
- Chronic Kidney Disease, Vitamin D Deficiency
- Interventions
- Cholecalciferol, Placebo
- Drug
- Lead sponsor
- Atlanta VA Medical Center
- Federal
- Eligibility
- 18 Years to 85 Years
- Enrollment
- 34 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2013
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Dietary Supplement
- Interventions
- Dietary Supplement: Sprinkled Format REDUCOSE., Reference control, Active comparator
- Dietary Supplement · Other
- Lead sponsor
- Société des Produits Nestlé (SPN)
- Industry
- Eligibility
- 19 Years and older
- Enrollment
- 30 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021
- U.S. locations
- 1
- States / cities
- Tustin, California
- Conditions
- Bacterial Vaginosis
- Interventions
- Vitamin D3 (cholecalciferol), Placebo
- Dietary Supplement
- Lead sponsor
- Ohio State University
- Other
- Eligibility
- 18 Years to 50 Years · Female only
- Enrollment
- 118 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2013
- U.S. locations
- 1
- States / cities
- Columbus, Ohio
- Conditions
- Chronic Kidney Disease, Hyperparathyroidism, Secondary, Vitamin D Deficiency
- Interventions
- CTAP101 30 μg capsules, Sugar pill to CTAP101 30 μg capsules
- Drug · Other
- Lead sponsor
- OPKO IP Holdings II, Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 216 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2014
- U.S. locations
- 1
- States / cities
- Bannockburn, Illinois
- Conditions
- Colorectal Cancer
- Interventions
- Magnesium glycinate, Placebo
- Dietary Supplement
- Lead sponsor
- Vanderbilt University Medical Center
- Other
- Eligibility
- 40 Years to 85 Years
- Enrollment
- 180 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- Nashville, Tennessee
- Conditions
- Colorectal Cancer
- Interventions
- Vitamin D intervention, Placebo intervention
- Dietary Supplement
- Lead sponsor
- Baylor University
- Other
- Eligibility
- 18 Years to 79 Years
- Enrollment
- 43 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022 – 2023
- U.S. locations
- 1
- States / cities
- Waco, Texas
- Conditions
- Acute Stress Reaction
- Interventions
- Vitamin D3 (Cholecalciferol), Oral Placebo Tablet
- Dietary Supplement
- Lead sponsor
- Walter Reed Army Institute of Research (WRAIR)
- Federal
- Eligibility
- 18 Years to 40 Years
- Enrollment
- 52 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2027
- U.S. locations
- 1
- States / cities
- Silver Spring, Maryland
- Conditions
- COVID-19, Coronavirus, SARS-CoV2 Infection
- Interventions
- Rayaldee, Placebo
- Drug
- Lead sponsor
- OPKO Health, Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 171 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2021
- U.S. locations
- 10
- States / cities
- San Francisco, California • Miami, Florida • Evanston, Illinois + 6 more
- Conditions
- Muscle Power
- Interventions
- Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- Oklahoma State University
- Other
- Eligibility
- 18 Years to 35 Years
- Enrollment
- 103 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Stillwater, Oklahoma
- Conditions
- Breast Cancer, Osteoporosis
- Interventions
- calcium carbonate, vitamin D, risedronate sodium, placebo
- Dietary Supplement · Drug · Other
- Lead sponsor
- Alliance for Clinical Trials in Oncology
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 216 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2008
- U.S. locations
- 198
- States / cities
- Mobile, Alabama • Scottsdale, Arizona • Aurora, Colorado + 124 more
- Conditions
- Chronic Kidney Disease, Secondary Hyperparathyroidism, Vitamin D Insufficiency
- Interventions
- Cohort 1 CTAP101 Capsules- 60µg, Cohort 1 CTAP101 Capsules - 90µg, Cohort 1 Matching Sugar Capsule, Cohort 2 CTAP101 Capsules - 30µg, Cohort 2 Matching Sugar Capsule
- Drug
- Lead sponsor
- OPKO Health, Inc.
- Industry
- Eligibility
- 18 Years to 85 Years
- Enrollment
- 78 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Bannockburn, Illinois
- Conditions
- Osteoporosis
- Interventions
- Placebo, DP001
- Drug
- Lead sponsor
- Deltanoid Pharmaceuticals
- Industry
- Eligibility
- 55 Years to 80 Years · Female only
- Enrollment
- 157 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2009
- U.S. locations
- 9
- States / cities
- Upland, California • Indianapolis, Indiana • Bethesda, Maryland + 6 more
- Conditions
- Chronic Obstructive Pulmonary Disease (COPD)
- Interventions
- Vitamin D (cholecalciferol), Placebo
- Dietary Supplement
- Lead sponsor
- Minneapolis Veterans Affairs Medical Center
- Federal
- Eligibility
- 40 Years and older
- Enrollment
- 39 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Minneapolis, Minnesota
- Conditions
- Vitamin D Deficiency
- Interventions
- Redoxon VI, placebo
- Dietary Supplement
- Lead sponsor
- Oregon State University
- Other
- Eligibility
- 55 Years to 75 Years
- Enrollment
- 42 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- Corvallis, Oregon
- Conditions
- HMG-CoA Reductase Inhibitors-related Myalgias
- Interventions
- cholecalciferol/placebo
- Drug
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 19 Years to 89 Years
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Tuberculosis, Vitamin D, Immunity
- Interventions
- Vitamin D (600 IU), Vitamin D (2000 IU), Vitamin D (4000 IU), Placebo
- Dietary Supplement · Other
- Lead sponsor
- Cornell University
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 200 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2023
- U.S. locations
- 1
- States / cities
- Ithaca, New York
- Conditions
- Prostate Adenocarcinoma, Stage I Prostate Cancer, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer
- Interventions
- Cholecalciferol, Genistein, Laboratory Biomarker Analysis, Pharmacological Study, Placebo
- Drug · Other
- Lead sponsor
- National Cancer Institute (NCI)
- NIH
- Eligibility
- 18 Years and older · Male only
- Enrollment
- 15 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2014
- U.S. locations
- 11
- States / cities
- Birmingham, Alabama • Baltimore, Maryland • Burlington, Massachusetts + 6 more
- Conditions
- Osteoporosis, Frailty
- Interventions
- DHA/EPA, Placebo capsule, Calcium with vitamin D
- Dietary Supplement
- Lead sponsor
- Donaghue Medical Research Foundation
- Other
- Eligibility
- 65 Years and older · Female only
- Enrollment
- 150 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2009
- U.S. locations
- 1
- States / cities
- Farmington, Connecticut
- Conditions
- Renal Dialysis, Vitamin D Deficiency
- Interventions
- Cholecalciferol (Vitamin D)
- Dietary Supplement
- Lead sponsor
- VA Office of Research and Development
- Federal
- Eligibility
- 45 Years to 89 Years
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2022
- U.S. locations
- 1
- States / cities
- The Bronx, New York
- Conditions
- HIV Infection, Bone Mass
- Interventions
- cholecalciferol plus calcium carbonate
- Dietary Supplement
- Lead sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- NIH
- Eligibility
- 6 Years to 16 Years
- Enrollment
- 59 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2006
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Osteoporosis
- Interventions
- Calcium and vitamin D supplementation
- Dietary Supplement
- Lead sponsor
- Winthrop University Hospital
- Other
- Eligibility
- 45 Years to 85 Years · Female only
- Enrollment
- 78 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- Mineola, New York