539 studies found for:    Open Studies | "Vitamins"
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Rank Status Study
21 Unknown  Vitamin D Levels and Postoperative Hypocalcemia After Total Thyroidectomy
Conditions: Hypocalcemia;   Hypoparathyroidism;   Vitamin D Deficiency;   Thyroidectomy
Intervention:
22 Not yet recruiting Hip Arthroplasty and Vitamin D Status
Condition: Vitamin D Deficiency
Intervention: Other: No intervention
23 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
24 Recruiting Effect of Vitamin D Treatment on Fatigue
Condition: Vitamin D Deficiency
Interventions: Drug: Vitamin D;   Other: placebo
25 Recruiting Vitamin D Deficiency and Replacement on Pulmonary and Endocrine Function in SCI
Conditions: Spinal Cord Injury;   Vitamin D Deficiency
Intervention: Drug: Vitamin D3
26 Recruiting Trial of Vitamin D Supplements to Raise Calcidiol Levels of Pregnant Women in Mongolia
Conditions: Pregnancy;   Vitamin D Deficiency
Interventions: Dietary Supplement: 600 IU Vitamin D3 in prenatal vitamin;   Dietary Supplement: 2000 IU Vitamin D3 in prenatal vitamin;   Dietary Supplement: 4000 IU Vitamin D3 in prenatal vitamin
27 Not yet recruiting Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'.
Condition: Vitamin D Deficiency
Intervention: Behavioral: an educational video
28 Unknown  Interventional Trial of Vitamin D Deficiency in the Patients of General Departments
Condition: Vitamin D Deficiency
Intervention: Dietary Supplement: Alpha-D3
29 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
30 Unknown  hCAP18 Levels and Vitamin D Deficiency in Chronic Kidney Disease
Conditions: Chronic Kidney Disease;   Vitamin D Deficiency
Interventions: Drug: Ergocalciferol;   Drug: Calcitriol
31 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)
32 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
33 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
34 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
35 Recruiting Bone Health and Vitamin D Status
Conditions: Osteopenia;   Vitamin D Deficiency;   HIV Infection
Intervention:
36 Recruiting Isolation of Vitamin D Binding Protein Isoforms From Human Volunteers
Condition: Vitamin D Deficiency
Intervention: Other: Blood draw
37 Not yet recruiting Trial of High Dose Vitamin D in Patient's With Crohn's Disease
Conditions: Crohn's Disease;   Vitamin D Deficiency
Interventions: Drug: Cholecalciferol 10,000 IU;   Drug: Cholecalciferol 400 IU
38 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
39 Unknown  Impact of Work Environment Absent of Natural Light on Vitamin D Levels
Condition: Vitamin D Deficiency
Intervention:
40 Recruiting Vitamin D Supplementation and the Immune Response
Condition: D Vitamin Deficiency Patients
Intervention: Drug: Vitamin D (drug)

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Indicates status has not been verified in more than two years