533 studies found for:    Open Studies | "Vitamins"
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Rank Status Study
21 Recruiting Vitamin D Deficiency and Replacement on Pulmonary and Endocrine Function in SCI
Conditions: Spinal Cord Injury;   Vitamin D Deficiency
Intervention: Drug: Vitamin D3
22 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
23 Unknown  Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'.
Condition: Vitamin D Deficiency
Intervention: Behavioral: an educational video
24 Unknown  Interventional Trial of Vitamin D Deficiency in the Patients of General Departments
Condition: Vitamin D Deficiency
Intervention: Dietary Supplement: Alpha-D3
25 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)
26 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
27 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
28 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
29 Recruiting Food-based Solutions for Optimal Vitamin D Nutrition and Health
Condition: Vitamin D Deficiency
Interventions: Other: Non-fortified foods;   Other: Fortified foods
30 Recruiting The Effect of Vitamin D Supplementation on Cardiovascular Risk Factors
Condition: Vitamin D Deficiency
Interventions: Drug: Cholecalciferol;   Drug: Placebo
31 Recruiting Bone Health and Vitamin D Status
Conditions: Osteopenia;   Vitamin D Deficiency;   HIV Infection
Intervention:
32 Recruiting Isolation of Vitamin D Binding Protein Isoforms From Human Volunteers
Condition: Vitamin D Deficiency
Intervention: Other: Blood draw
33 Unknown  Impact of Work Environment Absent of Natural Light on Vitamin D Levels
Condition: Vitamin D Deficiency
Intervention:
34 Recruiting Determination of Vitamin D Dose to Maintain Sufficiency Amongst Indian and Malay Women in the Tropics
Condition: Vitamin D Deficiency
Intervention: Drug: Vitamin D3
35 Unknown  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
36 Recruiting The Effect of Vitamin D Administration to Premature Infants on Vitamin D Status and Respiratory Morbidity
Conditions: Other Preterm Infants;   Vitamin D Deficiency;   Bronchiolitis;   Asthma;   Pneumonia
Intervention: Dietary Supplement: Vitamin D
37 Unknown  The Prevalence of Vitamin D Deficiency and Effects of Vitamin D Supplementation in HIV-1 Infected Patients
Conditions: Vitamin D Deficiency;   HIV Infections
Intervention: Drug: colecalciferol
38 Recruiting Acute Effect of Systemic Stress on Measured Blood Concentrations of 25 (OH) Vitamin D
Conditions: Cardiovascular Disease;   Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D3;   Dietary Supplement: Placebo
39 Recruiting Is There Association Between Vitamin D Levels And Insulin Resistance In Polycystic Ovary Syndrome?
Conditions: Polycystic Ovary Syndrome;   Insulin Resistance;   Vitamin D Deficiency
Intervention:
40 Recruiting Impact of Maternal Body Weight on Vitamin D Status During Pregnancy
Conditions: Obesity;   Vitamin D Deficiency
Interventions: Dietary Supplement: Pregnancy multi-vitamin (including 10μg vitamin D3);   Dietary Supplement: 10μg vitamin D3;   Dietary Supplement: 0μg vitamin D (placebo)

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Indicates status has not been verified in more than two years