520 studies found for:    Open Studies | "Vitamins"
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Rank Status Study
21 Not yet recruiting Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'.
Condition: Vitamin D Deficiency
Intervention: Behavioral: an educational video
22 Unknown  Interventional Trial of Vitamin D Deficiency in the Patients of General Departments
Condition: Vitamin D Deficiency
Intervention: Dietary Supplement: Alpha-D3
23 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)
24 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
25 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
26 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
27 Recruiting Bone Health and Vitamin D Status
Conditions: Osteopenia;   Vitamin D Deficiency;   HIV Infection
28 Recruiting Isolation of Vitamin D Binding Protein Isoforms From Human Volunteers
Condition: Vitamin D Deficiency
Intervention: Other: Blood draw
29 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
30 Unknown  Impact of Work Environment Absent of Natural Light on Vitamin D Levels
Condition: Vitamin D Deficiency
31 Unknown  Vitamin D Supplementation and the Immune Response
Condition: D Vitamin Deficiency Patients
Intervention: Drug: Vitamin D (drug)
32 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
33 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
34 Not yet 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
35 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
36 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
37 Recruiting Vitamin D as a Supplement Against Falls in Elderly Study
Condition: Vitamin D Deficiency (10 ng/mL to 30 ng/mL)
Intervention: Dietary Supplement: Vitamin D
38 Not yet recruiting Can Correction of Low Vitamin D Status in Infancy Program for a Leaner Body Composition?
Conditions: Healthy;   Vitamin D Deficiency
Intervention: Dietary Supplement: cholecalciferol
39 Not yet recruiting Effects of Vitamin D Fortification on Vitamin D Metabolite Profiles and Status in Vitamin D Insufficient Individuals
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Rooibos Iced-Tea (Control);   Dietary Supplement: Rooibos Tea - Vitamin D3;   Dietary Supplement: Rooibos Tea- Vitamin D3 & Calcium
40 Recruiting Prevention of Vitamin D Deficiency Following Pediatric CHD Surgery: a Phase II Dose Evaluation Randomized Controlled Trial Comparing Usual Care With a High Dose Pre-operative Supplementation Regimen Based on the Institute of Medicine Daily Upper Tolerable Intake Level
Conditions: Vitamin D Deficiency;   Thoracic Surgery;   Pediatric Disorders;   Heart Defects, Congenital
Intervention: Dietary Supplement: Cholecalciferol

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Indicates status has not been verified in more than two years