Clinical trials: Vitamin D
Atrial Fibrillation, Atrial Flutter
Prophylaxis to Reduce Postoperative Atrial Fibrillation in Cardiac Surgery
Atrial Fibrillation (AF) is a common postoperative complication of cardiac surgery, occuring in approximately 25-30% of coronary artery bypass graft (CABG) patients and 35-40% of heart valve repair/replacement patients.
- Trial name
- NCT00953212
- Testing
- beta blockers, amiodarone, ascorbic acid
- Where
- United States
- Volunteers
- 304 people
- Sponsor
- MaineHealth
Prediabetes, Type 2 Diabetes
Vitamin D and Type 2 Diabetes Study
The goal of the Vitamin D and type 2 diabetes (D2d) study is to determine if vitamin D supplementation works to delay the onset of type 2 diabetes in people at risk for the disease and to gain a better understand how vitamin D…
- Trial name
- D2d (NCT01942694)
- Testing
- Vitamin D (Cholecalciferol)
- Where
- 25 sites in United States
- Volunteers
- 2,423 people
- Sponsor
- Tufts Medical Center
Osteopenia, Osteoporosis
Prevention of Bone Loss After Pediatric Hematopoietic Cell Transplantation
This is a Phase 2, open-label, randomized, controlled clinical study of pediatric subjects treated with pamidronate with calcium and vitamin D versus calcium and vitamin D alone following hematopoietic cell transplantation (HCT).
- Trial name
- NCT02074631
- Testing
- Pamidronate, Calcium and vitamin D
- Where
- 2 sites in United States
- Volunteers
- 63 people
- Sponsor
- Masonic Cancer Center, University of Minnesota
Chronic Pancreatitis
Fat Malabsorption in Chronic Pancreatitis
The objective of this study is to evaluate the malabsorption blood test (MBT), stool coefficient of fat absorption (CFA) and stool bomb calorimetry (BC) methods as potential screening or diagnostic tests for reduced exocrine…
- Trial name
- NCT02849704
- Testing
- Creon36™
- Where
- United States
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Children's Hospital of Philadelphia
Prostate Adenocarcinoma, Recurrent Prostate Carcinoma
Calcitriol in Combination With Ketoconazole and Therapeutic Hydrocortisone in Treating Patients With Prostate Cancer
This phase I/II trial studies the side effects and best dose of calcitriol when given in combination with ketoconazole and therapeutic hydrocortisone and to see how well it works in treating patients with prostate cancer.
- Conditions
- Prostate Adenocarcinoma, Recurrent Prostate Carcinoma, Stage III Prostate Cancer, Stage IV Prostate Cancer
- Trial name
- NCT00536991
- Testing
- Calcitriol, Ketoconazole, Laboratory Biomarker Analysis
- Where
- United States
- Volunteers
- 51 people
- Sponsor
- Roswell Park Cancer Institute
Childhood Acute Promyelocytic Leukemia With PML-RARA, Myeloid Neoplasm
Combination Chemotherapy in Treating Young Patients With Newly Diagnosed Acute Promyelocytic Leukemia
This phase III trial is studying combination chemotherapy to see how well it works in treating young patients with newly diagnosed acute promyelocytic leukemia.
- Trial name
- NCT00866918
- Testing
- Arsenic Trioxide, Cytarabine, Diagnostic Laboratory Biomarker Analysis
- Where
- 121 sites in United States, Canada and 1 more
- Volunteers
- 106 people
- Sponsor
- Children's Oncology Group
Respiratory Infection
Vitamin D Supplementation and Acute Respiratory Infection in Older Long-Term Care Residents
This study will test the role of high dose vitamin D supplementation in prevention of acute respiratory infection in older nursing home residents.
- Trial name
- NCT01102374
- Testing
- High Dose Vitamin D, Standard Dose Vitamin D, Usual Care
- Where
- United States
- Volunteers
- 107 people
- Sponsor
- University of Colorado, Denver
COVID-19, Coronavirus
Safety and Efficacy of Rayaldee for Treating Mild to Moderate COVID-19
This is a phase 2, single or multi-center, randomized, double-blind placebo-controlled study to evaluate the safety and efficacy of Rayaldee (CTAP101 Capsules) to treat adult subjects with mild to moderate COVID-19 who test…
- Conditions
- COVID-19, Coronavirus, SARS-CoV2 Infection
- Trial name
- NCT04551911
- Testing
- Rayaldee
- Where
- 10 sites in United States
- Volunteers
- 171 people
- Sponsor
- OPKO Health, Inc.
Osteoporosis
A Study to Assess Safety and Efficacy of Odanacatib (MK-0822) in Men With Osteoporosis (MK-0822-053)
The purpose of this study is to test the hypothesis that treatment with odanacatib will result in increased bone mineral density (BMD) compared to treatment with placebo.
- Trial name
- NCT01120600
- Testing
- Odanacatib, Vitamin D3, Calcium carbonate
- Volunteers
- 294 people
- Sponsor
- Merck Sharp & Dohme LLC
Hypogonadism, Diabetes
Effects of Aromatase Inhibition Versus Testosterone in Older Men With Low Testosterone: Randomized-Controlled Trial.
Background: Men≥65 years often produce lower levels of testosterone, meaning there is less testosterone circulating to the tissues of the body.
- Conditions
- Hypogonadism, Diabetes, Sarcopenia, Osteoporosis
- Trial name
- NCT00104572
- Testing
- Androgel (Testosterone Gel), Anastrozole (Aromatase Inhibitor), Calcium Cardone 500mg with vitamin D 400 IU
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- National Institute on Aging (NIA)
Pre-Diabetic
Effect of 1,25-dihydroxyvitamin D3, Treatment on Insulin Secretion and Muscle Strength in Pre-diabetic Persons
The purpose of this research is to study the effects of 1,25(OH)2 D3 (a prescription form of active Vitamin D) on muscle strength and insulin secretion by the pancreas and glucose utilization by skeletal muscle.
- Trial name
- NCT04286529
- Testing
- Calcitriol capsules
- Where
- United States
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Overweight, Obesity
Vitamin D Effects in Overweight Patients
The purpose of the study is to investigate in overweight patients who are on a telemedically guided weight loss program the influence of a daily vitamin D supplement on weight loss and body composition, selected inflammation…
- Trial name
- SMART (NCT00493012)
- Testing
- vitamin D
- Where
- Germany
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Heart and Diabetes Center North-Rhine Westfalia
Cutaneous Malignant Melanoma
Vitamin D Supplementation in Cutaneous Malignant Melanoma Outcome
To assess whether vitamin D supplementation after surgery of a first cutaneous malignant melanoma protects against relapse of the disease.
- Trial name
- ViDMe (NCT01748448)
- Testing
- Vitamin D
- Where
- 4 sites in Belgium, Hungary
- Volunteers
- 436 people
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Breast Cancer
Modulation of Breast Cancer Risk Biomarkers by High Dose Vitamin D
The overall goal of this project is to determine if high dose vitamin D3 given to premenopausal women at high risk for development of breast cancer, who initially have insufficient levels of 25-hydroxy vitamin D (<30 ng/ml), will…
- Trial name
- NCT01166763
- Testing
- vitamin D3
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- Carol Fabian, MD
Cystic Fibrosis
Effects of an Antioxidant-Enriched Multivitamin Supplement on Inflammation and Oxidative Stress in Cystic Fibrosis
The purpose of this study will be to evaluate the effects of a modified formulation of AquADEKs (AquADEKs-2) on markers of inflammation, antioxidant levels and oxidative stress.
- Trial name
- AquADEKs-2 (NCT01859390)
- Testing
- AquADEKs-2, control multivitamin
- Where
- 15 sites in United States
- Volunteers
- 73 people
- Sponsor
- University of Colorado, Denver
Depression, Depressive Symptoms
VITAL-DEP: Depression Endpoint Prevention in the VITamin D and OmegA-3 TriaL
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is an ongoing randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids…
- Conditions
- Depression, Depressive Symptoms, Mood
- Trial name
- VITAL-DEP (NCT01696435)
- Testing
- vitamin D3, omega-3 fatty acids (fish oil)
- Where
- United States
- Volunteers
- 18,353 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Wheezing, Allergy
Wheezing in Black Preterm Infants: Impact of Vitamin D Supplementation Strategy
The goal of this study is to identify a vitamin D supplementation strategy that best promotes the lung, immune, and overall health of black infants born preterm (28-36 weeks gestational age).
- Trial name
- D-Wheeze (NCT01601847)
- Testing
- Cholecalciferol
- Where
- 5 sites in United States
- Volunteers
- 300 people
- Sponsor
- Case Western Reserve University
Sickle Cell Disease
High Dose Vitamin D for Sickle Cell Disease
Vitamin D deficiency (VDD) is very common among African American adolescents and adults in the US, ten times higher than is seen in Caucasians. VDD is also quite common in sickle cell disease (SCD).
- Trial name
- SCD-VitD (NCT01331148)
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 46 people
- Sponsor
- Wake Forest University Health Sciences
Fatty Liver
Treatment for Non-Alcoholic Fatty Liver With Different Doses of Vitamin E
Background: Non-alcoholic fatty liver disease (NAFLD) is an excess accumulation of fat in the liver cells. It is associated with obesity, high blood pressure, high cholesterol, and diabetes.
- Trial name
- NCT01792115
- Testing
- Vitamin E 200 IU/d, Vitamin E 400 IU/d, Vitamin E 800 IU/d
- Where
- United States
- Volunteers
- 22 people
- Sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Obesity, Insulin Resistance
Correction of Vitamin D Levels and Its Effect on Insulin Resistance and Weight Gain in Obese Youth
Vitamin D deficiency is extremely common in obese youth. In our obese population followed in the Endocrinology clinic at Children's Medical Center Dallas, vitamin D levels were inversely correlated with a measure of insulin…
- Conditions
- Obesity, Insulin Resistance, Vitamin D Deficiency
- Trial name
- NCT02168660
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 109 people
- Sponsor
- Perrin C White, MD