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90 studies found for:    oh | Open Studies | "Vitamin D"
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Rank Status Study
1 Unknown  Serum 25(OH)D Levels, Supplemental Vitamin D, and Parathyroid Hormone Levels in Premature Infants
Condition: Premature Infants
Interventions: Dietary Supplement: cholecalciferal;   Dietary Supplement: cholecalciferol
2 Recruiting Change in Free 25(OH)D After High Dose in Vitamin D Deficient Postmenopausal Women
Conditions: Vitamin D Deficiency;   Osteoporosis
Intervention: Dietary Supplement: Cholecalciferol (Vitamin D3)
3 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
4 Unknown  Clinical Trial on the Use of 25-OH -D Vitamin in Haemodialysis Patients
Condition: Chronic Renal Failure
Intervention: Drug: 25-OH-D vitamin
5 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
6 Recruiting Vitamin D and Microbiota in Cystic Fibrosis
Conditions: Vitamin D Deficiency;   Cystic Fibrosis
Interventions: Dietary Supplement: High-Dose Vitamin D3;   Other: Stool Sample;   Other: Sputum Sample;   Other: Sham Comparator;   Procedure: Blood draw
7 Recruiting Personalized Vitamin D Supplementation in European and African Americans
Condition: Vitamin D Deficiency
Intervention: Dietary Supplement: Vitamin D
8 Recruiting A Pilot Study of Vitamin D in Boys With X-linked Adrenoleukodystrophy
Condition: X-linked Adrenoleukodystrophy
Intervention: Dietary Supplement: vitamin D3
9 Unknown  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)
10 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
11 Unknown  Effect of Vitamin D Supplementation on Coronary Calcification and Parathyroid Hormone in CKD Patients
Conditions: Chronic Kidney Disease;   Vitamin D Deficiency
Intervention: Drug: Vitamin D2
12 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
13 Recruiting Effect of Vitamin D Replacement on Maternal and Neonatal Outcomes
Conditions: Hypovitaminosis D;   Pregnancy Complications;   Infant, Newborn, Diseases
Intervention: Dietary Supplement: Euro D
14 Unknown  Pilot Study Evaluating Doxercalciferol Replacement Therapy in Kidney Transplant Recipients
Conditions: Chronic Kidney Disease;   Kidney Transplantation
Interventions: Drug: Doxercalciferol;   Drug: placebo
15 Recruiting The Effect of 25-OH-Vitamin-D3 Substitution in Patients With Malignant and Immune-hematologic Diseases
Condition: Chronic Lymphoid Leukemia
Interventions: Drug: Cholecalciferol;   Drug: oleum neutralicum
16 Unknown  Sleep Apnea Syndrome and Vitamin D
Condition: Obstructive Sleep Apnea-hypopnea Syndrome
Intervention: Drug: 25 OH vitamin D
17 Recruiting High Dose Vitamin D Study
Condition: Colorectal Cancer
Intervention: Drug: Vitamin D
18 Recruiting Vitamin D Levels Following Topical Application of Vitamin D Ointment
Condition: Vitamin D Deficiency
Intervention: Drug: Vitamin D3
19 Unknown  Efficacy of the Dose Regimen of Oral Vitamin D 50,000 IU in the Treatment of Vitamin D Deficiency
Condition: Vitamin D Deficiency
Interventions: Drug: 50.000 IU vitamin D3 (Biodal 50,000 IU);   Drug: Placebo (to mimic Biodal 50,000 IU)
20 Recruiting Vitamin D and Stroke
Condition: Stroke
Intervention: Dietary Supplement: Vit D

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Indicates status has not been verified in more than two years