532 studies found for:    Open Studies | "Vitamins"
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Rank Status Study
1 Recruiting Vitamin B6 Effects for Women Taking Birth Control Pills
Condition: Vitamin B6 Deficiency
Interventions: Dietary Supplement: Vitamin B6;   Procedure: Infusion of amino acids, serine, and methionine
2 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: Placeboe;   Other: Standard of Care
3 Recruiting The Effects of Serum Vitamin D and IVF Outcome
Conditions: Vitamin D Deficiency;   Vitamin D Insufficiency;   Infertility
Intervention:
4 Unknown  Effect of Omega-3 Fatty Acid on Vitamin D Activation
Conditions: Hemodialysis Patients;   Vitamin D Insufficiency;   Vitamin D Deficiency
Interventions: Drug: Omega-3 fatty acid ethylester 90;   Other: Olive oil;   Other: cholecalciferol
5 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
6 Recruiting Primary Hyperparathyroidism (PHPT): Early Effect of Vitamin D
Conditions: Primary Hyperparathyroidism;   Hypercalcemia;   Vitamin D Deficiency;   Osteoporosis;   Osteopenia
Interventions: Dietary Supplement: Placebo;   Dietary Supplement: Vitamin D3
7 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)
8 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
9 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
10 Recruiting Vitamin D Treatment, Pharmacogenetics and Glucose Metabolism
Conditions: Polycystic Ovary Syndrome;   Healthy;   Vitamin D Deficiency
Interventions: Drug: Vitamin D supplementation;   Drug: Placebo
11 Recruiting Vitamin D and Vascular Health in Children
Conditions: Obesity;   Vitamin D Deficiency
Intervention: Dietary Supplement: Vitamin D3
12 Unknown  Vitamin D Replacement After Kidney Transplant
Conditions: Kidney Transplantation;   Vitamin D Deficiency
Intervention: Dietary Supplement: vitamin D3
13 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
14 Recruiting Vitamin D Supplementation in Older Adults With Urinary Incontinence
Conditions: Urinary Incontinence;   Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D;   Other: Placebo
15 Recruiting Improving the Understanding of the Response to Vitamin D Supplementation
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: cholecalciferol;   Dietary Supplement: Placebo
16 Unknown  Safety of Vitamin D in the Elderly
Condition: Vitamin D Deficiency
Intervention: Dietary Supplement: cholecalciferol (vitamin D)
17 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
18 Recruiting Vitamin D Supplementation as Non-toxic Immunomodulation in Children With Crohn's Disease
Conditions: Crohn's Disease;   Vitamin D Deficiency
Intervention: Drug: Cholecalciferol
19 Recruiting Vitamin D Replacement in Insulin Resistant South Asians
Conditions: Vitamin D Deficiency;   Insulin Resistance
Intervention: Drug: Vitamin D3 cholecalciferol
20 Recruiting Vitamin D Supplementation for Extremely Preterm Infants
Conditions: Vitamin D Deficiency;   Preterm Infants;   Bronchopulmonary Dysplasia
Interventions: Dietary Supplement: Cholecalciferol;   Dietary Supplement: Placebo

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Indicates status has not been verified in more than two years