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Showing 241–264 of 326 matching trials from the live ClinicalTrials.gov search.
Completed Not applicable Interventional Results available

Vitamin D Replacement After Kidney Transplant

NCT00748618
Conditions
Kidney Transplantation, Vitamin D Deficiency
Interventions
Standard vitamin D3 treatment, High dose vitamin D3 treatment
Dietary Supplement
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2023
U.S. locations
1
States / cities
Omaha, Nebraska
Conditions
Hyperparathyroidism, Secondary
Interventions
doxercalciferol
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Atlanta, Georgia
Conditions
Vitamin D Deficiency
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
12 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Conditions
Prostate Cancer
Interventions
cholecalciferol
Dietary Supplement
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 90 Years · Male only
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Charleston, South Carolina
Completed Phase 1 Interventional Accepts healthy volunteers

The Role of Vitamin D in Female Reproductive Tract Immunity

NCT02186535
Conditions
Vitamin D Deficiency
Interventions
Vitamin D and Calcium
Dietary Supplement
Lead sponsor
CONRAD
Other
Eligibility
21 Years to 50 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Norfolk, Virginia
Completed Phase 3 Interventional Results available

Heartland Osteoporosis Prevention Study

NCT02186600
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
Completed Phase 3 Interventional Results available

A Study of Actonel for the Prevention of Bone Loss

NCT00452439
Conditions
Leukemia, Lymphoma
Interventions
Actonel (Risedronate), Calcium, Vitamin D
Drug · Dietary Supplement
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2014
U.S. locations
1
States / cities
Houston, Texas
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Vitamin D and Calcium Homeostasis for Prevention of Type 2 Diabetes

NCT00436475
Conditions
Glucose Intolerance, Type 2 Diabetes Mellitus, Metabolic Syndrome
Interventions
Vitamin D3 2,000 IU orally once daily, Calcium Carbonate 400 mg orally twice daily, Vitamin D3-Placebo, Calcium-Placebo
Drug
Lead sponsor
Tufts Medical Center
Other
Eligibility
40 Years and older
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Polycystic Ovary Syndrome, Vitamin D Deficiency
Interventions
Vitamin D3
Drug
Lead sponsor
Maimonides Medical Center
Other
Eligibility
16 Years to 48 Years · Female only
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Brooklyn, New York
Conditions
Coronary Artery Disease, Chronic Kidney Disease, Hypovitaminosis D, Secondary Hyperparathyroidism
Interventions
paricalcitol, placebo
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effect of Oral Vitamin D Versus Narrow-Band UV-B Exposure on the Lipid Profile

NCT01688102
Conditions
Vitamin D Deficiency
Interventions
Oral Vitamin D3, Ultraviolet Light
Dietary Supplement · Radiation
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 70 Years
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
New York, New York
Conditions
Graves Disease, Graves' Disease, Hyperthyroidism
Interventions
Ergocalciferol 50,000 IU, Methimazole
Drug
Lead sponsor
Northwell Health
Other
Eligibility
9 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New Hyde Park, New York
Conditions
Follicular Lymphoma, Small Lymphocytic Lymphoma, Marginal Zone Lymphoma, Mucosal-Associated Lymphoid Tissue Lymphoma
Interventions
Vitamin D, Rituximab, Placebo
Dietary Supplement · Biological · Other
Lead sponsor
Jonathan Friedberg
Other
Eligibility
18 Years and older
Enrollment
211 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
7
States / cities
Miami, Florida • Atlanta, Georgia • Iowa City, Iowa + 4 more
Conditions
Paget's Disease of Bone
Interventions
Zoledronic Acid, Risedronate, Placebo to Risedronate, Placebo to Zoledronic Acid, Calcium and Vitamin D
Drug · Dietary Supplement
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
30 Years and older
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2011
U.S. locations
12
States / cities
Santa Monica, California • Lakewood, Colorado • Boca Raton, Florida + 9 more
Conditions
Autosomal Dominant Hypocalcemia (ADH)
Interventions
Encaleret, Standard of Care
Drug · Dietary Supplement
Lead sponsor
Calcilytix Therapeutics, Inc., a BridgeBio company
Industry
Eligibility
16 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
11
States / cities
Oakland, California • Aurora, Colorado • Indianapolis, Indiana + 8 more
Completed Not applicable Interventional Accepts healthy volunteers

Magnesium and Vitamin D Supplementation and Cardiometabolic Outcomes

NCT03134417
Conditions
Overweight and Obesity, Vitamin D Deficiency, Magnesium Deficiency, Cardiovascular Risk Factor
Interventions
Vitamin D and magnesium, Vitamin D, Placebo
Dietary Supplement
Lead sponsor
Drexel University
Other
Eligibility
30 Years to 70 Years
Enrollment
109 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Terminated Phase 3 Interventional Results available

Pediatric Chronic Kidney Disease Safety and Efficacy

NCT01277510
Conditions
Chronic Kidney Disease, Hyperparathyroidism, Hyperparathyroidism, Secondary, Kidney Disease, Secondary Hyperparathyroidism
Interventions
cinacalcet capsule, placebo, Standard of Care
Drug
Lead sponsor
Amgen
Industry
Eligibility
6 Years to 17 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
18
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 14 more
Conditions
Osteoporosis, Prostate Cancer
Interventions
cholecalciferol, calcium gluconate, zoledronic acid
Dietary Supplement · Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Male only
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
3
States / cities
Chicago, Illinois
Conditions
Gastric Bypass, Parathyroid Hormone
Interventions
Paricalcitol, Cholecalciferol, Placebo
Drug
Lead sponsor
Kerstyn C. Zalesin, M.D.
Other
Eligibility
18 Years to 100 Years
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Royal Oak, Michigan
Completed Not applicable Interventional Accepts healthy volunteers

DAYLIGHT: Vitamin D Therapy in Individuals at High Risk of Hypertension

NCT01240512
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
Completed Not applicable Interventional Results available

Vitamin D and Type 2 Diabetes Study

NCT01942694
Conditions
Prediabetes, Type 2 Diabetes
Interventions
Vitamin D (Cholecalciferol), Placebo
Dietary Supplement · Other
Lead sponsor
Tufts Medical Center
Other
Eligibility
30 Years and older
Enrollment
2,423 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
25
States / cities
Phoenix, Arizona • Los Angeles, California • Palo Alto, California + 20 more
Conditions
Hot Flushes, Menopause, Premature, Obesity, Vitamin D Deficiency
Interventions
Vitamin D, Placebo
Dietary Supplement · Other
Lead sponsor
Kaiser Permanente
Other
Eligibility
40 Years to 60 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Portland, Oregon
Conditions
Stage, Colon Cancer, Stage I-III Colon Cancer, Stage IV Colon Cancer With Resectable Liver Metastases
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Completed Not applicable Interventional Accepts healthy volunteers

Can Vitamin D Reduce the Burden of COVID-19?

NCT07128069
Conditions
COVID-19
Interventions
Vitamin D 400IU, Vitamin D 4000IU
Dietary Supplement
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
2,093 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Chicago, Illinois