Comment Period Extended to 3/23/2015 for Notice of Proposed Rulemaking (NPRM) for FDAAA 801 and NIH Draft Reporting Policy for NIH-Funded Trials
531 studies found for:    Open Studies | "Vitamins"
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Rank Status Study
21 Unknown  Vitamin D During Pregnancy
Condition: Vitamin D Deficiency
Interventions: Other: completion of a questionnaire;   Other: Blood draw
22 Recruiting Vitamin A, Stool Microbiota and Vaccine Response in Bangladeshi Infants
Condition: Vitamin A Deficiency
Intervention:
23 Recruiting Vitamin D Repletion in Primary Hyperparathyroidism
Conditions: Primary Hyperparathyroidism;   Vitamin D Deficiency
Interventions: Dietary Supplement: 10,000 IU Vitamin D3;   Dietary Supplement: Placebo
24 Unknown  Vitamin D Levels and Postoperative Hypocalcemia After Total Thyroidectomy
Conditions: Hypocalcemia;   Hypoparathyroidism;   Vitamin D Deficiency;   Thyroidectomy
Intervention:
25 Not yet recruiting Hip Arthroplasty and Vitamin D Status
Condition: Vitamin D Deficiency
Intervention: Other: No intervention
26 Recruiting Vitamin D3 Supplementation for Heart Failure Patients
Conditions: Heart Failure;   Vitamin D Deficiency;   Cardiomyopathy;   Congestive Heart Failure
Interventions: Drug: Placebo Comparator: Sugar Pill;   Drug: Vitamin D3 (cholecalciferol)
27 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
28 Recruiting Effect of Vitamin D Treatment on Fatigue
Condition: Vitamin D Deficiency
Interventions: Drug: Vitamin D;   Other: placebo
29 Recruiting Vitamin D Deficiency and Replacement on Pulmonary and Endocrine Function in SCI
Conditions: Spinal Cord Injury;   Vitamin D Deficiency
Intervention: Drug: Vitamin D3
30 Not yet recruiting Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'.
Condition: Vitamin D Deficiency
Intervention: Behavioral: an educational video
31 Unknown  Interventional Trial of Vitamin D Deficiency in the Patients of General Departments
Condition: Vitamin D Deficiency
Intervention: Dietary Supplement: Alpha-D3
32 Unknown  Effect of Vitamin D Supplementation on Hemoglobin A1c
Conditions: Diabetes Mellitus;   Vitamin D Deficiency
Intervention: Dietary Supplement: Vitamin D
33 Recruiting Effect of Vitamin D Supplementation on Metabolic Parameters of Patients With Psoriasis
Conditions: Psoriasis;   Metabolic Syndrome;   Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D3;   Dietary Supplement: Placebo
34 Recruiting hCAP18 Levels and Vitamin D Deficiency in Chronic Kidney Disease
Conditions: Chronic Kidney Disease;   Vitamin D Deficiency
Interventions: Drug: Ergocalciferol;   Drug: Calcitriol
35 Not yet recruiting Effect of Vitamin D Supplementation in Patients With Heart Failure and Vitamin D Deficiency
Conditions: Heart Failure;   Vitamin D Deficiency
Interventions: Other: Vitamin D Supplementation;   Other: Control group (Placebo)
36 Recruiting Hepatic Dysfunction, Vitamin D Status, and Glycemic Control in Diabetes
Conditions: Type 2 Diabetes;   Nonalcoholic Fatty Liver Disease;   Vitamin D Deficiency
Intervention: Dietary Supplement: Ergocalciferol, placebo
37 Recruiting Vitamin D and Preeclampsia
Conditions: Vitamin D Deficiency Defined as Serum 25OHD < 75 Nmol/l or 30ng/ml;   Preeclampsia;   Neonatal Hypercalcemia;   Pregnancy
Intervention:
38 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
39 Not yet recruiting Impact of Vitamin D on 25-hydroxyvitamin D Levels and Physical Function
Conditions: Vitamin D Deficiency;   Sarcopenia
Interventions: Dietary Supplement: vitamin D3;   Other: Placebo
40 Recruiting Bone Health and Vitamin D Status
Conditions: Osteopenia;   Vitamin D Deficiency;   HIV Infection
Intervention:

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Indicates status has not been verified in more than two years