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379 studies found for:    Open Studies | "Vitamin D"

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Rank Status Study
1 Recruiting Treatment of Vitamin D Insufficiency
Condition: Vitamin D Insufficiency
Interventions: Drug: High Dose Vitamin D3;   Drug: Low Dose Vitamin D3;   Drug: Placebo
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 Recruiting Effect of Vitamin D Oral Supplements on 25 OH Vitamin D Levels
Condition: Vitamin D Deficiency
Interventions: Drug: ergocalciferol 2000 IU orally, daily;   Drug: ergocalciferol 25000 IU oraly every 2 weeks;   Drug: ergocalciferol 50000 IU orally every 4 weeks;   Drug: ergocal1000 IU & cholecal 1000 IU orally daily;   Drug: cholecalciferol 2000 IU orally daily;   Drug: Cholecalciferol 25000 IU orally every 2 weeks;   Drug: Cholecalciferol 50000 orally every 4 weeks;   Drug: placebo orally everyday
4 Unknown † Vitamin D Replacement After Kidney Transplant
Conditions: Kidney Transplantation;   Vitamin D Deficiency
Intervention: Dietary Supplement: vitamin D3
5 Recruiting Evaluating Vitamin D Content in Mushrooms
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Mushroom Vitamin D2;   Dietary Supplement: Cholecalciferol;   Dietary Supplement: Vitamin D2 - Ergocalciferol;   Dietary Supplement: Mushroom Extract
6 Recruiting Assessment of Vitamin D Supplementation and Immune Function
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D - Treatment 1;   Dietary Supplement: Vitamin D - Treatment 2;   Dietary Supplement: Vitamin D - Treatment 3
7 Recruiting Determination of Effective Vitamin D Replacement and Monitoring Strategies in Vitamin D Deficiency State
Condition: Vitamin D Deficiency
Interventions: Drug: Vitamin D3 600,000 units IM;   Drug: Vitamin D3 600,000 Orally;   Drug: Vitamin D3 200,000 units IM;   Drug: Vitamin D3 200,000 Orally
8 Not yet recruiting Vitamin D and Its Affect on Growth Rates and Bone Mineral Density Until Age 5
Condition: Vitamin D Deficiency
Interventions: Drug: Vitamin D;   Other: Placebo (for Vitamin D)
9 Recruiting Magnitude of Changes in 25 OH Vitamin D3 Levels After Vitamin D3 Supplementation
Condition: Vitamin D Deficiency
Interventions: Drug: vitamin D3 1000 IU orally daily for 5 months;   Drug: vitamin D3 3000 IU orally daily for 5 months;   Drug: vitamin D3 5000 IU orally daily for 5 months;   Drug: Placebo orally daily for 5 months
10 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
11 Recruiting Vitamin D for Sickle-cell Respiratory Complications
Conditions: Sickle Cell Disease;   Vitamin D Deficiency;   Acute Chest Syndrome;   Asthma;   Respiratory Infections
Intervention: Drug: Vitamin D3
12 Recruiting Vitamin D and Breast Cancer: Does Weight Make a Difference?
Condition: Breast Cancer
Intervention: Drug: Vitamin D3
13 Not yet recruiting Finnish Vitamin D Trial (FIND)
Conditions: Cardiovascular Diseases;   Cancer
Interventions: Dietary Supplement: Vitamin D3;   Dietary Supplement: Placebo
14 Recruiting Vitamin D Supplements for HIV-positive Patients on cART
Condition: HIV-associated Co-morbidities
Interventions: Dietary Supplement: conventional vitamin D treatment;   Drug: tiered/titrated vitamin D dosing
15 Recruiting Impact of Vitamin D on Diabetic Kidney Disease in African Americans
Condition: Diabetic Kidney Disease
Intervention: Drug: Vitamin D3
16 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
17 Not yet recruiting Pharmacokinetic Comparison of Vitamin's D2 and D3 in Stage 5 Chronic Kidney Disease Patients on Chronic Hemodialysis
Condition: Chronic Kidney Disease
Interventions: Dietary Supplement: Vitamin D3;   Dietary Supplement: Vitamin D2;   Dietary Supplement: Placebo
18 Recruiting DIVINE: Dialysis Infection and Vitamin D In New England
Condition: End Stage Renal Disease
Interventions: Drug: Ergocalciferol;   Other: Placebo
19 Recruiting Vitamin D Status, Disease Specific and Quality of Life Outcomes in Patients With Cutaneous Lupus
Condition: Cutaneous Lupus Erythematosus
Intervention: Dietary Supplement: vitamin D
20 Unknown † The Beneficial Effect of Vitamin D Supplement to Peg Interferon Alpha 2a or to Telbivudine Monotherapy in Patients With Chronic Hepatitis B Virus (HBV) Infection
Condition: Hepatitis B Virus
Interventions: Drug: Peginterferon + Vitamin D;   Drug: Peginterferon;   Drug: Sebivo;   Drug: entecavir+ vitamin d
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† Indicates status has not been verified in more than two years