519 studies found for:    Open Studies | "Vitamins"
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Open Studies | "Vitamins" (519 records)
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Rank Status Study
1 Recruiting Vitamin Deficiencies and Suppletion in Morbid Obesity
Condition: Vitamin B12 Deficiency
Interventions: Drug: Hydroxocobalamin;   Drug: FitForMe vitamin B12
2 Recruiting Vitamin B12 Acceptance and Biomarker Response Study
Condition: Vitamin B 12 Deficiency
Interventions: Drug: Oral administration of vitamin B12;   Drug: i.m. injection of vitamin B12
3 Not yet recruiting 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)
4 Recruiting Study To Understand Fall Reduction and Vitamin D in You
Conditions: Vitamin D Deficiency;   Falls
Interventions: Dietary Supplement: 200 IU/d cholecalciferol;   Dietary Supplement: 1000 IU/d cholecalciferol;   Dietary Supplement: 2000 IU/d cholecalciferol;   Dietary Supplement: 4000 IU/d cholecalciferol
5 Recruiting Stopping Postpartum Vitamin A Supplementation: Missing Concealed Benefit
Condition: Vitamin A Deficiency
Interventions: Dietary Supplement: Vitamin A (<3-day postpartum);   Dietary Supplement: Vitamin A (6 wk postpartum);   Dietary Supplement: Vitamin A (<3-day and 6 wk postpartum);   Dietary Supplement: Placebo
6 Unknown  Efficacy of Vitamin D3 for the Treatment of Psoriatic Patients With Vitamin D Deficiency and Insufficiency
Conditions: Psoriasis Vulgaris;   Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D3;   Drug: Placebo
7 Recruiting Vitamin D Treatment, Pharmacogenetics and Glucose Metabolism
Conditions: Polycystic Ovary Syndrome;   Healthy;   Vitamin D Deficiency
Interventions: Drug: Vitamin D supplementation;   Drug: Placebo
8 Recruiting Vitamin D and Vascular Health in Children
Conditions: Obesity;   Vitamin D Deficiency
Intervention: Dietary Supplement: Vitamin D3
9 Unknown  Vitamin D Replacement After Kidney Transplant
Conditions: Kidney Transplantation;   Vitamin D Deficiency
Intervention: Dietary Supplement: vitamin D3
10 Recruiting Vitamin D, Insulin Resistance, and Cardiovascular Disease
Conditions: Vitamin D Deficiency;   Insulin Resistance;   Type 2 Diabetes Mellitus;   Cardiovascular Disease;   Hypertension
Interventions: Drug: Vitamin D3;   Drug: Placebo
11 Recruiting Nutritional Requirements for Vitamin D in Pregnant Women
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: 10 mcg Vitamin D3;   Dietary Supplement: 20 mcg Vitamin D3;   Dietary Supplement: Placebo
12 Recruiting 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
13 Recruiting Vitamin D Supplementation as Non-toxic Immunomodulation in Children With Crohn's Disease
Conditions: Crohn's Disease;   Vitamin D Deficiency
Intervention: Drug: Cholecalciferol
14 Not yet recruiting Therapeutic Benefit of Preoperative Supplemental Vitamin D in Patients Undergoing Major Surgical Procedures.
Condition: Vitamin d Deficiency
Interventions: Procedure: Blood draw pre-operatively;   Procedure: Blood draw post-operative Day 1;   Procedure: Blood draw post-operative Day 2
15 Not yet recruiting Roles of Vitamin D and HDL in Obese Children
Conditions: Obese;   Vitamin D Deficiency;   Low HDL
Intervention: Dietary Supplement: Vitamin D
16 Recruiting Vitamin A, Stool Microbiota and Vaccine Response in Bangladeshi Infants
Condition: Vitamin A Deficiency
17 Recruiting Vitamin D Repletion in Primary Hyperparathyroidism
Conditions: Primary Hyperparathyroidism;   Vitamin D Deficiency
Interventions: Dietary Supplement: 10,000 IU Vitamin D3;   Dietary Supplement: Placebo
18 Unknown  Vitamin D Levels and Postoperative Hypocalcemia After Total Thyroidectomy
Conditions: Hypocalcemia;   Hypoparathyroidism;   Vitamin D Deficiency;   Thyroidectomy
19 Recruiting Vitamin D Deficiency and Replacement on Pulmonary and Endocrine Function in SCI
Conditions: Spinal Cord Injury;   Vitamin D Deficiency
Intervention: Drug: Vitamin D3
20 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

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