Clinical trials: Deficiency, Vitamin D
Vitamin D Deficiency
The Effect of a Meal on Vitamin D Absorption
This study seeks to determine if vitamin D3 absorption in healthy adults will be enhanced in the presence of a meal and if the enhancement will be greater when the meal is low as opposed to high in fat content.
- Trial name
- NCT01268176
- Testing
- cholecalciferol
- Where
- United States
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- Tufts University
Vitamin d Deficiency
Peripheral Immunological Effects of High-dose Vitamin D Treatment in Healthy Subjects
Vitamin D deficiency is associated with the risk of developing MS. Vitamin D treatment has therefore been tested as a background treatment for this pathology, with a seemingly modest clinical effect.
- Trial name
- VDSS (NCT05654818)
- Testing
- Vitamin D
- Where
- France
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire de Nīmes
Vitamin D Deficiency
Follicular Fluid, Bioavailable Vitamin D and Embryo Quality Markers
To determine the correlation between bioavailable Vitamin D values and euploid status of the embryos in larger size follicles from UAE women undergoing in vitro fertilization procedures.
- Trial name
- NCT03073720
- Where
- United Arab Emirates
- Volunteers
- 43 people, healthy volunteers welcome
- Sponsor
- ART Fertility Clinics LLC
Vitamin D Deficiency
Community Interventional Trial (CITFOMIST)
The cluster randomized trial (CITFOMIST) was conducted on 15-19-year old guidance and high school students of both genders from different districts of Tehran, the Iranian capital, in winter 2011.
- Trial name
- CITFOMIST (NCT02035423)
- Testing
- 120 IU milk, 200 IU Milk, Non-Fortified Milk
- Where
- Iran
- Volunteers
- 6,000 people, healthy volunteers welcome
- Sponsor
- Tehran University of Medical Sciences
Chronic Kidney Disease-Mineral and Bone Disorder
To Investigate the Bone and Muscle Abnormalities in Patients With Chronic Kidney Disease With MRI
Patients with chronic kidney disease (CKD) have a higher risk of fractures than those without. The purpose of this study is to develop a non-invasive Magnetic resonance imaging (MRI) method that can improve fracture risk…
- Trial name
- NCT04564924
- Testing
- DXA
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Tongji Hospital
Diabetes Mellitus, Vitamin D Deficiency
Does Vitamin D Improve Glycemic Control in Type II DM?
Vitamin D status has been negatively associated with the presence of type II DM and glycemic control. However, a cause-effect relationship between vitamin D deficiency and glycemic control has not been established.
- Trial name
- NCT01170442
- Testing
- vitamin D3 2000 IU, vitamin D3 5000 IU
- Where
- Saudi Arabia
- Volunteers
- 25 people
- Sponsor
- King Faisal Specialist Hospital & Research Center
Vitamin D Deficiency
A Comparative Dissolution and Absorption Study of an Orodispersible Powder, Chewable Tablet and Soft Gel Capsule Vitamin D3 Supplementation
This is an open-labelled, randomized controlled clinical trial aimed to compare the pharmacokinetics of an orodispersible vs a soft gelatin vitamin supplementation in vitamin D deficient healthy adults.
- Trial name
- NCT05706259
- Testing
- Soft gelatin 200000 IU vitamin D3 capsule, Orodispersible (sachet) 200000 IU vitamin D3
- Where
- Pakistan
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Liaquat University of Medical & Health Sciences
Vitamin D Deficiency, Osteoporosis
Does Vitamin D Alter Bone's Response to Vibration?
Fractures in children are common and the incidence is increasing. They are more common in children who have small, narrow and weak bones.
- Trial name
- NCT02743559
- Testing
- Mechanical Stimulation using whole body vibration
- Where
- United Kingdom
- Sponsor
- Sheffield Children's NHS Foundation Trust
Deficiency, Vitamin D, Elderly, Frail
The Effect of Calcifediol (Hy.D 25 SD/S) and Vitamin D3 on Muscle Strength in a Frail Elderly Population
In an ageing population, the need for interventions to help older people remain healthy, active and independent for as long as possible, increases.
- Trial name
- D-Fit (NCT02349282)
- Testing
- Calcifediol 10ug/day, Vitamin D3 20ug/day
- Where
- Netherlands
- Volunteers
- 78 people, healthy volunteers welcome
- Sponsor
- Wageningen University
Diabetic Foot Ulcers, Vitamin D Deficiency
Vitamin D Treatment of Diabetic Patients With Foot Ulcers
The purpose of this study, is to determine whether daily supplements of vitamin D improves wound healing in diabetic patients with chronic foot ulcers.
- Trial name
- NCT03813927
- Testing
- Vitamin D
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Zealand University Hospital
Vitamin D3 Deficiency
Preventing Health Disparities During Pregnancy Through Vitamin D Supplementation
The purpose of this study is to give all mothers the best chance for a healthy pregnancy through vitamin D supplementation. We will study women of diverse racial/ethnic backgrounds who will receive either the current vitamin D…
- Trial name
- NCT01932788
- Testing
- Vitamin D3 4000 IU in gummy form
- Where
- United States
- Volunteers
- 342 people, healthy volunteers welcome
- Sponsor
- Medical University of South Carolina
Covid-19, Respiratory Distress Syndrome
Vitamin D Supplementation and Clinical Outcomes in Severe COVID-19 Patients
Single center, open label randomized clinical trial. Study location: tertiary hospital center (University Hospital Split, Croatia).
- Conditions
- Covid-19, Respiratory Distress Syndrome, Vitamin D Deficiency
- Trial name
- NCT05384574
- Testing
- cholecalciferol
- Where
- Croatia
- Volunteers
- 200 people
- Sponsor
- University Hospital of Split
Burns, Bone Demineralization
Evaluation of Vitamin D Status in Children With Acute Burns
To see which vitamin D supplement (D2 vs D3) is most beneficial in burned children.
- Trial name
- VitaminD (NCT00536276)
- Testing
- Vitamin D2, Vitamin D3
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Shriners Hospitals for Children
Vitamin-D Insufficiency
Seasonal Variations in Serum 25-hydroxy Vitamin-D Levels in a Swedish Cohort
The purpose of this study was to study seasonal inter-individual and intra-individual variations in S-25(OH)D and to explore parameters associated with S-25-OHD in healthy Swedish adults.
- Trial name
- NCT02136407
- Where
- Sweden
- Volunteers
- 615 people, healthy volunteers welcome
- Sponsor
- Sahlgrenska University Hospital
Hyperphosphatemia
The Effect of Oral Niacinamide on Plasma Phosphorus Levels in Peritoneal Dialysis Patients
Hyperphosphatemia is common in the peritoneal dialysis population. Current strategies are insufficient to optimize phosphorus control.
- Trial name
- NCT00508885
- Testing
- Niacinamide
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- Washington University School of Medicine
Vitamin D Deficiency, Obesity
Effects of Vitamin D Supplementation in Obesity
Obesity is an increasing health problem with numerous metabolic complications. Vitamin D deficiency is common in obesity, and in epidemiological studies vitamin D deficiency has been linked to metabolic complications, such as…
- Trial name
- NCT01037140
- Testing
- Cholecalciferol
- Where
- Denmark
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
Hypovitaminosis D, Cardiovascular Diseases
Effect of vitaminD3 or 25(OH)D3 Fortified Dairy on Vitmain D Status and CVD Risk Markers
This study aims to compare the acute effect of consuming milk and butter fortified with either vitamin D3 or 25 (OH) D3 on serum/plasma vitamin D status in humans.
- Trial name
- NCT02535910
- Testing
- vitamin D3, 25(OH) D3, Control
- Where
- United Kingdom
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- University of Reading
Functional Constipation in Children
Is Vitamin D Deficiency Linked to Functional Constipation In Children
Constipation is one of the most common causes of patient visits to pediatric clinics. Prevalence of constipation is estimated between 1.9-27.2% in the USA (Rasquin et al., 2006).
- Trial name
- NCT06657313
- Where
- Egypt
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Benha University
Hypovitaminosis D, Type 2 Diabetes Mellitus
Vitamin D and Type 2 Diabetes - a Cross Sectional Study
The purpose of the study is to describe vitamin D status among patients with type 2 diabetes and to determine the association between serum 25-hydroxyvitamin D and glycemic control, markers of inflammation and blood pressure
- Trial name
- NCT00695474
- Volunteers
- 150 people
- Sponsor
- University of Aarhus
Vitamin D Deficiency
Vitamin D in Armenia: Vitamin D Repletion Strategies With Dibase, and Vitamin D and Vitamin D Binding Protein and COVID
This is a three-arm unblinded prospective interventional study of vitamin D supplementation in participants with insufficient vitamin D at three different induction and maintenance dosing regimens (high dose, low frequency…
- Trial name
- NCT06406543
- Testing
- Vitamin D3 (Cholecalciferol)
- Where
- Armenia
- Volunteers
- 77 people, healthy volunteers welcome
- Sponsor
- Columbia University
The first 1,020 results can be paged through. Add a filter or change the sort order to reach the rest.