432 studies found for:    Open Studies | "Vitamin D"
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21 Recruiting Study to Identify Transcriptional Targets of Vitamin D in Patients With Stage I-III Colon Cancer or Resectable Colon Cancer Liver Metastases Receiving Preoperative Vitamin D Supplementation.
Conditions: Stage, Colon Cancer;   Stage I-III Colon Cancer;   Stage IV Colon Cancer With Resectable Liver Metastases
Intervention: Drug: Vitamin D3
22 Recruiting Effects of Vitamin D and Calcium Supplementation on Inflammatory Biomarkers and Adypocytokines in Diabetic Patients
Condition: Nutritional and Metabolic Disease
Interventions: Dietary Supplement: vitamin D3 supplement;   Dietary Supplement: calcium supplement;   Dietary Supplement: vitamin D3 and calcium supplement;   Dietary Supplement: placebo
23 Recruiting Dose-related Effects of Vitamin D3 on Immune Responses in Patients With Clinically Isolated Syndrome
Conditions: Clinically Isolated Syndrome;   Multiple Sclerosis
Interventions: Dietary Supplement: 5000IU vitamin D;   Dietary Supplement: 10000IU vitamin D;   Other: Placebo
24 Not yet recruiting Vitamin D Supplementation and TB
Conditions: Tuberculosis;   Vitamin D;   Immunity
Interventions: Dietary Supplement: Vitamin D (600 IU);   Dietary Supplement: Vitamin D (2000 IU);   Dietary Supplement: Vitamin D (4000 IU);   Other: Placebo
25 Recruiting Anti-proliferative Effects of Vitamin D and Melatonin in Breast Cancer
Condition: Early Stage Breast Cancer
Interventions: Drug: Melatonin;   Drug: Vitamin D;   Drug: Placebo (melatonin);   Drug: Placebo (vitamin D)
26 Recruiting Vitamin D Treatment and Hypogonadism in Men
Condition: Hypogonadism
Interventions: Drug: Vitamin D supplementation in hypogonadal men;   Drug: Vitamin D supplementation in eugonadal men;   Drug: Placebo hypogonadal;   Drug: Placebo eugonadal
27 Recruiting Vitamin D Intervention in Infants
Condition: Vitamin D Status
Interventions: Dietary Supplement: Vitamin D at 30 ug/day;   Dietary Supplement: Vitamin D at 10 ug/day
28 Recruiting Effects of Vitamin D Insufficiency in Man
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D2;   Dietary Supplement: Vitamin D3
29 Recruiting Vitamin D and the Health of Blood Vessels in Kidney Disease
Condition: Chronic Kidney Disease (CKD)
Interventions: Dietary Supplement: Dietary supplement;   Dietary Supplement: Vitamin D
30 Recruiting Vitamin D Status in Relation to Insulin Sensitivity Among Saudi Women With Polycystic Ovary Syndrome
Condition: Polycystic Ovary Syndrome
Interventions: Dietary Supplement: Vitamin D3 pills;   Other: Placebo pills
31 Recruiting Vitamin D Supplementation in Patients With Diabetes Mellitus Type 2
Conditions: Diabetes Mellitus Type 2;   Vitamin D Deficiency
Interventions: Drug: Vitamin D supplementation;   Drug: Placebo Pill
32 Recruiting Comparison of Absorption of Vitamin D in Cystic Fibrosis
Condition: Cystic Fibrosis
Interventions: Dietary Supplement: Vitamin D Powder;   Dietary Supplement: Vitamin D Oil
33 Not yet recruiting The Vitamin D in Pediatric Crohn's Disease
Condition: Crohn's Disease
Interventions: Drug: Vitamin D3 4000 UI/day then 2,000 IU/day;   Drug: Vitamin D3 1,600 IU/day then 800 IU/day
34 Not yet recruiting GAit, MEmory, Dietary and Vitamin D
Condition: Memory Complaint Without Cognitive Decline
Interventions: Dietary Supplement: Yogurt supplemented with vitamin D and calcium;   Dietary Supplement: Yogurt not supplemented with vitamin D and calcium
35 Recruiting Vitamin D in Ventilated ICU Patients
Condition: Respiratory Failure
Interventions: Dietary Supplement: Enteral Vitamin D3 50,000 IU;   Dietary Supplement: Enteral Vitamin D3 100,000IU;   Dietary Supplement: Inactive substance
36 Recruiting Vitamin D Supplementation in HIV Youth
Condition: HIV+
Intervention: Drug: Vitamin D3
37 Recruiting Vitamin D, Insulin Resistance, and Cardiovascular Disease
Conditions: Vitamin D Deficiency;   Insulin Resistance;   Type 2 Diabetes Mellitus;   Cardiovascular Disease;   Hypertension
Interventions: Drug: Vitamin D3;   Drug: Placebo
38 Recruiting Effect of High-Dose Vitamin D on Bone Density in Osteogenesis Imperfecta
Condition: Osteogenesis Imperfecta
Interventions: Dietary Supplement: standard-dose vitamin D (400IU per day);   Dietary Supplement: high-dose vitamin D (2000 IU per day)
39 Recruiting Sunshine 2 Study for Women With Diabetes
Conditions: Diabetes;   Depression;   Quality of Life
Interventions: Drug: Vitamin D3;   Drug: Vitamin D3 comparator
40 Not yet recruiting Can Vitamin D Supplementation in Infants Prevent Food Allergy in the First Year of Life? The VITALITY Trial
Condition: Food Allergy
Interventions: Drug: Vitamin D;   Drug: placebo

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Indicates status has not been verified in more than two years