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Rank Status Study
1 Recruiting Vitamin D in Pediatric Asthma: a Randomized Controlled Open-label Pilot Trial
Conditions: Asthma;   Vitamin D Deficiency
Interventions: Drug: Vitamin D2 + vitamin D3;   Drug: Vitamin D3
2 Recruiting The Effect of Vitamin D Repletion in Patients With Hepatocellular Carcinoma on the Orthotopic Liver Transplant List
Conditions: Vitamin D Deficiency;   Hepatocellular Carcinoma
Interventions: Drug: Vitamin D3 4000 IU;   Drug: Vitamin D3 2000 IU
3 Unknown  Vitamin D Replacement After Kidney Transplant
Conditions: Kidney Transplantation;   Vitamin D Deficiency
Intervention: Dietary Supplement: vitamin D3
4 Recruiting High Dose Vitamin D vs Standard Dose Vitamin D Study
Condition: Breast Cancer
Interventions: Drug: 800 IU Vitamin D Supplement;   Drug: 50,000 IU Vitamin D supplement
5 Recruiting A Randomized, Parallel, Double-blind, Placebo-controlled Study of Vitamin D as Prophylactic Treatment for Migraine
Condition: Migraine According to International Headache Society (IHS) Criteria (ICHD-II)
Interventions: Drug: D3 Vitamin ®;   Drug: Placebo
6 Recruiting Dose-dependent Effects of Vitamin D on Bone Health
Condition: Age-Related Osteoporosis
Intervention: Dietary Supplement: Vitamin D
7 Recruiting Stopping Postpartum Vitamin A Supplementation: Missing Concealed Benefit
Condition: Vitamin A Deficiency
Interventions: Dietary Supplement: Vitamin A (<3-day postpartum);   Dietary Supplement: Vitamin A (6 wk postpartum);   Dietary Supplement: Vitamin A (<3-day and 6 wk postpartum);   Dietary Supplement: Placebo
8 Unknown  Intratracheal Vitamin A Administration With Surfactant for Newborn Respiratory Distress Syndrome
Conditions: RDS;   Infant, Newborn;   Vitamin A;   Surfactant
Interventions: Drug: surfactant;   Drug: surfactant+vitamin A
9 Recruiting Effect of Vitamin D Supplementation on Glucose Tolerance in Subjects at Risk for Diabetes With Low Vitamin D.
Conditions: Type 2 Diabetes Mellitus;   Vitamin D Deficiency
Interventions: Dietary Supplement: Control;   Dietary Supplement: Vitamin D
10 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
11 Recruiting Finnish Vitamin D Trial (FIND)
Conditions: Cardiovascular Diseases;   Cancer
Interventions: Dietary Supplement: Vitamin D3;   Dietary Supplement: Placebo
12 Recruiting Vitamin D and Breast Cancer: Does Weight Make a Difference?
Condition: Breast Cancer
Intervention: Drug: Vitamin D3
13 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
14 Not yet recruiting Role of Vitamin C to Augment Iron Chelation With DFP or DFX
Conditions: Vitamin c;   Thalassemia Major;   Iron Chelation
Interventions: Drug: Vitamin C, Defriprone, deferisarox;   Drug: deferiprone , deferesarox
15 Unknown  Vitamin K2 and Vessel Calcification in Chronic Kidney Disease Patients
Conditions: Kidney Diseases;   Coronary Artery Calcification
Interventions: Drug: Vitamin K2+10μg cholecalciferol;   Drug: Vitamin D
16 Recruiting The Effects of Vitamin B-6 Status on Homocysteine, Oxidative Stress, One-carbon Metabolism and Methylation: Cross-section, Case-control, Intervention and Follow-up Studies in Colorectal Cancer
Condition: Colorectal Cancer
Interventions: Dietary Supplement: Vitamin C;   Dietary Supplement: Vitamin B6;   Dietary Supplement: Folic acid;   Dietary Supplement: Vitamin B6 plus folic acid
17 Not yet recruiting Effect of Supplementary Vitamin D in Patients With Diabetes Mellitus and Pulmonary Tuberculosis
Conditions: Type 2 Diabetes Mellitus;   Pulmonary Tuberculosis
Interventions: Dietary Supplement: Vitamin D;   Dietary Supplement: Calcium;   Dietary Supplement: Placebo Vit D;   Dietary Supplement: Placebo Calcium
18 Recruiting Effect of Vitamin K Supplementation on Markers of Diabetes Risk in Obese Children
Conditions: Obesity;   Insulin Resistance;   Insulin Sensitivity;   Beta-Cell Dysfunction;   Prediabetes
Interventions: Dietary Supplement: Placebo-Control;   Dietary Supplement: Low-Dose Vitamin K2 (menaquinone-7; 45 mcg/d);   Dietary Supplement: High-Dose Vitamin K2 (menaquinone-7; 90 mcg/d)
19 Unknown  Vitamin D Deficiency Causes Immune Dysfunction and Enables or Perpetuates the Development of Rheumatoid Arthritis
Conditions: Arthritis, Rheumatoid;   Vitamin D Deficiency
Interventions: Drug: Placebo in arm A and Vitamin D in arm B;   Drug: vitamin D 3 for arm A ,and matching placebo for arm B
20 Recruiting Vitamin D and Vitamin B12 Supplementation With Pegylated Interferon-Alfa Plus Ribavirin for Treating Chronic Hepatitis C
Conditions: RNA Virus Infections;   Flaviviridae Infections;   Hepatitis C;   Hepatitis C, Chronic
Interventions: Drug: Vitamin D;   Drug: Vitamin B 12

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