Clinical trials: Vitamin D
Diabetes, Depression
Sunshine 2 Study for Women With Diabetes
This is a randomized clinical trial (RCT) to determine the effectiveness of vitamin D3 supplementation on depressive symptoms, self-management, and blood pressure in approximately 180 adult women with type 2 diabetes who have…
- Conditions
- Diabetes, Depression, Quality of Life
- Trial name
- NCT01904032
- Testing
- Vitamin D3, Vitamin D3 comparator
- Where
- United States
- Volunteers
- 265 people
- Sponsor
- Loyola University
Autistic Disorder
Vitamin D to Prevent Autism in Newborn Siblings
The purpose of this study is to determine whether by administering vitamin D to mothers who already have at least one child with autism and who are pregnant, that the vitamin D will prevent the recurrence of autism in the newborn…
- Trial name
- NCT01366885
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- Oregon Health and Science University
Preeclampsia
Combined Antioxidant and Preeclampsia Prediction Studies (CAPPS)
Preeclampsia is one of the most common complications of pregnancy and is characterized by high blood pressure and protein in the urine. This can cause problems in the second half of pregnancy for both the mother and fetus.
- Trial name
- CAPPS (NCT00135707)
- Testing
- Dietary Supplement/Vitamins
- Where
- 16 sites in United States
- Volunteers
- 10,154 people, healthy volunteers welcome
- Sponsor
- The George Washington University Biostatistics Center
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.
Renal Dialysis, Vitamin D Deficiency
Vitamin D Supplementation in Kidney Disease
This is a double-blind placebo controlled pilot study to determine if vitamin D supplementation in hemodialysis (HD) patients will improve physical function and cognition.
- Trial name
- NCT01229878
- Testing
- Cholecalciferol (Vitamin D)
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- VA Office of Research and Development
Transplant; Failure, Kidney, Renal Disease, End Stage
Oral Paricalcitol in Kidney Transplant Recipients
This study is being done to find out whether patients who receive a kidney transplant can benefit from taking the medication paricalcitol (trade name Zemplar®) as compared to kidney transplant recipients not taking this…
- Conditions
- Transplant; Failure, Kidney, Renal Disease, End Stage, Hyperparathyroidism, Secondary
- Trial name
- NCT00587158
- Testing
- Paricalcitol, Corticosteroid Avoidance Immune Suppression Protocol
- Where
- 2 sites in United States
- Volunteers
- 100 people
- Sponsor
- Mayo Clinic
Colon Cancer
Vitamin D and Screening Colonoscopy or Polyp Surveillance
The investigators will recruit DoD beneficiaries 18 years or older, that have been referred for a screening colonoscopy or polyp surveillance (or had one in the last 2 weeks), and have no previous diagnosis of colorectal cancer.
- Trial name
- VitDColon (NCT02269332)
- Testing
- Screening Colonoscopy
- Where
- United States
- Volunteers
- 298 people
- Sponsor
- Mike O'Callaghan Military Hospital
Acute Respiratory Distress Syndrome, Vitamin D Deficiency
Vitamin D to Improve Outcomes by Leveraging Early Treatment
Vitamin D deficiency is a common, potentially reversible contributor to morbidity and mortality among critically ill patients. We conducted a randomized, double-blind, placebo-controlled, phase 3 trial of early vitamin D3…
- Conditions
- Acute Respiratory Distress Syndrome, Vitamin D Deficiency, Critical Illness
- Trial name
- VIOLET (NCT03096314)
- Testing
- Vitamin D3
- Where
- 47 sites in United States
- Volunteers
- 1,358 people
- Sponsor
- Massachusetts General Hospital
Chronic Kidney Disease
The Effect of Paricalcitol on Creatinine Filtration, Secretion and Glomerular Filtration Rate
The purpose of this study is to study the effects of Paricalcitol (Zemplar) on kidney functioning. The investigators hypothesize that the increase in serum creatinine observed in recent paricalcitol trials is a function of…
- Trial name
- Paricalcitol (NCT01163162)
- Testing
- Paricalcitol
- Where
- United States
- Volunteers
- 16 people
- Sponsor
- Indiana University
Vitamin d Deficiency
Blue Sky Study: Impact of Milk and Vitamin D for Child Growth and Health
This intervention study will address the impact of vitamin D fortified milk and vitamin D supplements on the growth, levels of vitamin D, insulin-like growth factor 1, growth hormone, academic attention, respiratory infections…
- Trial name
- BSS (NCT00886379)
- Testing
- Mongolian milk without vitamin D, Mongolian milk with vitamin D, UHT milk
- Volunteers
- 597 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Vitamin D Deficiency
Personalized Vitamin D Supplementation in European and African Americans
The proposed study is a randomized, double-blind, controlled, multi-center clinical trial of six months of daily oral vitamin D3 (cholecalciferol).
- Trial name
- NCT02362269
- Testing
- Vitamin D
- Where
- 2 sites in United States
- Volunteers
- 169 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Obesity, Insulin Resistance
Vitamin D Supplementation to Obese Chinese Males
Hypothesis: Oral Supplementation of Vitamin D can Reduce Hypersecretion of Parathyroid Hormone and Insulin Resistance in Obese Chinese Males.
- Trial name
- NCT01781169
- Testing
- Oral supplementation of vitamin D
- Where
- China
- Volunteers
- 43 people, healthy volunteers welcome
- Sponsor
- Shenzhen Center for Chronic Disease Control
Vitamin D Deficiency
Evaluation of Vitamin D Requirements During Pregnancy
The purpose of this study is to determine the effectiveness of vitamin D supplementation during pregnancy starting at the beginning of the second trimester.
- Trial name
- NCT00292591
- Testing
- cholecalciferol (vitamin D3), cholecalciferol
- Where
- United States
- Volunteers
- 501 people, healthy volunteers welcome
- Sponsor
- Medical University of South Carolina
Healthy Volunteers
Effect of Calcium 500 mg and Vitamin D3 1000 IU Chewable Tablet on Intestinal Calcium Absorption
The purpose of this study is to demonstrate that the intestinal absorption of calcium from a novel calcium carbonate-vitamin D3 chewable tablet formulation (calcium 500 milligrams (mg) and vitamin D3 1000 International Units…
- Trial name
- NCT02338713
- Testing
- Calcichew D3, Noncarbonated Water
- Where
- France
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- Takeda
Multiple Sclerosis, Relapsing-remitting
Pharmacokinetics of Vitamin D in Multiple Sclerosis and in Health
This is a pilot study of oral vitamin D supplementation to determine if patients with Multiple Sclerosis (MS) and healthy individuals attain a similar increase in serum 25-hydroxyvitamin D levels.
- Trial name
- NCT01667796
- Testing
- Vitamin D3
- Where
- 2 sites in United States
- Volunteers
- 57 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Cystic Fibrosis, Dysbiosis
Vitamin D and Prebiotics for Intestinal Health in Cystic Fibrosis
The study will assess if administration of high-dose vitamin D and a commonly used prebiotic (inulin) is effective to reduce gastrointestinal dysbiosis and to improve critical intestinal functions in Cystic Fibrosis with the…
- Trial name
- NCT04118010
- Testing
- Vitamin D3, Inulin
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- Emory University
Chronic Peritonitis
Effects of Vitamin D on Moderate to Severe Periodontitis
The object of the study was to evaluate the direct effect of high dose vitamin D supplementation on chronic periodontitis, and suggest the recommended dose for clinic use.
- Trial name
- NCT03044886
- Testing
- vitamin D
- Volunteers
- 360 people
- Sponsor
- Beijing Chao Yang Hospital
Atopic Dermatitis, Vitamin D Deficiency
Vitamin D Deficiency and Atopic Dermatitis
Atopic dermatitis is a chronic skin disease characterized by a defective skin barrier, inflammation, and increased propensity for skin infections.
- Trial name
- NCT01337635
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 7 people
- Sponsor
- Medical College of Wisconsin
Bone Density, Body Composition
VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture (VITAL)
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is a randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or fish oil (1 gram of omega-3 fatty…
- Conditions
- Bone Density, Body Composition, Bone Health
- Trial name
- VITAL (NCT01747447)
- Testing
- omega-3 fatty acids (fish oil), Vitamin D3
- Where
- United States
- Volunteers
- 771 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Chemotherapy-Induced Alopecia
Compound 31543 (Calcitriol, USP) in Patients Receiving Taxane-based Chemotherapy Regimens for the Treatment of Chemotherapy-Induced Alopecia
The goal of this clinical trial is to learn if Compound 31543 (topical calcitriol) for treatment of hair-loss in patients with a diagnosis of breast cancer, gynecologic cancer or sarcomas receiving a taxane-based chemotherapy is…
- Trial name
- NCT01588522
- Testing
- Compound 31543 Calcitriol 5 μg/mL, Compound 31543 Calcitriol 10 μg/mL, Compound 31543 Calcitriol 20 μg/mL
- Where
- 2 sites in United States
- Volunteers
- 28 people
- Sponsor
- BPGbio