Clinical trials: Vitamin D
Inflammatory Bowel Disease, Crohn's Disease
Vitamin D Levels in Children With IBD
Research has shown that children with Inflammatory Bowel Disease may have lower levels of vitamin D than healthy children, especially in the winter.
- Conditions
- Inflammatory Bowel Disease, Crohn's Disease, Ulcerative Colitis
- Trial name
- NCT00621257
- Testing
- ergocalciferol, Cholecalciferol
- Where
- United States
- Volunteers
- 134 people
- Sponsor
- Boston Children's Hospital
Hypophosphatasia (HPP)
A Retrospective Study of the Natural History of Patients With Severe Perinatal and Infantile Hypophosphatasia (HPP)
This study aims to characterize the natural history of patients with severe perinatal or infantile onset HPP.
- Trial name
- NCT01419028
- Where
- 12 sites in United States, Australia and 5 more
- Volunteers
- 48 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Vitamin D Deficiency
Safety of Vitamin D Supplementation in Older Persons
This study will evaluate the safety over 6 months of two different doses of vitamin D (cholecalciferol) in men and women age 65 and older. It will also evaluate if supplementation with vitamin D improves physical performance.
- Trial name
- NCT00681590
- Testing
- cholecalciferol (vitamin D)
- Where
- United States
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- University of Miami
Impaired Fasting Glucose, Impaired Glucose Tolerance
D Vitamin Intervention in VA
This study will supplement African American male (AAM) veterans at risk for diabetes and newly diagnosed T2DM with vitamin D (low or higher dose) and evaluate whether vitamin D helps to improve early markers of diabetes.
- Conditions
- Impaired Fasting Glucose, Impaired Glucose Tolerance, Vitamin D Insufficiency
- Trial name
- DIVA (NCT01375660)
- Testing
- 50K vitamin D2
- Where
- United States
- Volunteers
- 205 people
- Sponsor
- US Department of Veterans Affairs
Chronic Kidney Disease
Vascular Reactivity in Chronic Kidney Disease (CKD) Patients Receiving Paricalcitol Versus Placebo
This research is studying how Vitamin D may affect blood vessels reaction to stress and blood levels of substances that may increase blockages in the blood vessels in chronic kidney disease (CKD) patients.
- Trial name
- NCT00915876
- Testing
- Paricalcitol
- Where
- United States
- Volunteers
- 41 people
- Sponsor
- Amy Barton Pai
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
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
Hypophosphatasia (HPP)
Safety and Efficacy Study of Asfotase Alfa in Severely Affected Infants With Hypophosphatasia (HPP)
This clinical trial studies the safety and efficacy of asfotase alfa in infants and young children with infantile onset HPP.
- Trial name
- NCT00744042
- Testing
- asfotase alfa
- Where
- 10 sites in United States, Canada and 2 more
- Volunteers
- 11 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
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