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68 studies found for:    oh | Open Studies | "Vitamin D"
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Rank Status Study
1 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)
2 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
3 Recruiting Personalized Vitamin D Supplementation in European and African Americans
Condition: Vitamin D Deficiency
Intervention: Dietary Supplement: Vitamin D
4 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
5 Recruiting A New Paradigm for Vitamin D Sufficiency
Condition: New Biomarkers for Measuring Vitamin D Level
Interventions: Dietary Supplement: Vitamin D Supplementation;   Other: Placebo;   Dietary Supplement: Calcium
6 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
7 Not yet recruiting Clearance of 25-hydroxyvitamin D in Chronic Kidney Disease
Condition: Chronic Kidney Disease
Intervention: Drug: Vitamin D
8 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
9 Recruiting Vitamin D Supplementation in Warfighters
Condition: Vitamin D Deficiency Disease
Intervention: Dietary Supplement: Vitamin D3
10 Recruiting Vitamin D and Stroke
Condition: Stroke
Intervention: Dietary Supplement: Vit D
11 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
12 Recruiting High Dose Vitamin D Study
Condition: Colorectal Cancer
Intervention: Drug: Vitamin D
13 Not yet recruiting Individualized Response to Vitamin D Treatment Study
Condition: The Focus of the Study is to Determine Individual Genetic and Metabolic Characteristics That Modify the Response to Cholecalciferol Treatment
Interventions: Dietary Supplement: Vitamin D3;   Drug: Placebo
14 Recruiting Vitamin D Levels Following Topical Application of Vitamin D Ointment
Condition: Vitamin D Deficiency
Intervention: Drug: Vitamin D3
15 Recruiting A Pilot Study of Vitamin D in Boys With X-linked Adrenoleukodystrophy
Condition: X-linked Adrenoleukodystrophy
Intervention: Dietary Supplement: vitamin D3
16 Recruiting Vitamin D, Bones, Nutritional and Cardiovascular Status
Condition: Vitamin D
Intervention: Other: Exploration of Vitamin D roles
17 Recruiting Vitamin D, Steroids, and Asthma in African American Youth
Conditions: Asthma;   Allergy
Intervention:
18 Not yet recruiting Vitamin D to Improve Nutrition Prior to Bariatric Surgery and Investigate the Relationship With Negative Outcomes
Conditions: Vitamin D Deficiency;   Vitamin D Insufficiency
Interventions: Dietary Supplement: Vitamin D;   Other: Placebo;   Other: Standard of Care
19 Recruiting An Evaluation of the Effect of Vitamin D Supplementation on the Cognitive Function of Older Subjects With Low Levels of This Vitamin
Condition: VITAMIN D DEFICIENCY
Intervention: Drug: Vitamin D
20 Recruiting Safety, Feasibility and Efficacy of Vitamin D Supplementation in Women With Metastatic Breast Cancer (SAFE-D)
Conditions: Adult Women;   Metastatic Breast Cancer;   Estrogen Receptor Positive
Intervention: Drug: Cholecalciferol

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Study has passed its completion date and status has not been verified in more than two years.