378 studies found for:    Open Studies | "Vitamins"
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Rank Status Study
21 Not yet recruiting Using Stable Isotope Techniques to Monitor and Assess the Vitamin A Status of Children Susceptible to Infection
Condition: Vitamin A Deficiency
Intervention: Dietary Supplement: Mega-dose of vitamin A supplement
22 Recruiting Vitamin Deficiencies and Suppletion in Morbid Obesity
Condition: Vitamin B12 Deficiency
Interventions: Drug: Hydroxocobalamin;   Drug: FitForMe vitamin B12
23 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
24 Recruiting Vitamin D and Vascular Health in Children
Conditions: Obesity;   Vitamin D Deficiency
Intervention: Dietary Supplement: Vitamin D3
25 Recruiting Can Correction of Low Vitamin D Status in Infancy Program for a Leaner Body Composition?
Conditions: Healthy;   Vitamin D Deficiency
Interventions: Dietary Supplement: cholecalciferol;   Dietary Supplement: Reference 400
26 Recruiting Vitamin D Supplementation as Non-toxic Immunomodulation in Children With Crohn's Disease
Conditions: Crohn's Disease;   Vitamin D Deficiency
Intervention: Drug: Cholecalciferol
27 Not yet recruiting Vitamin D Substitution During Winter Time
Condition: Vitamin D Substitution
Intervention: Drug: Colecalciferol
28 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
29 Recruiting Vitamin D Supplementation on Physical and Cognitive Function-Pilot Study
Conditions: Renal Dialysis;   Vitamin D Deficiency
Intervention: Dietary Supplement: Cholecalciferol (Vitamin D)
30 Recruiting Impact of Maternal Body Weight on Vitamin D Status During Pregnancy
Conditions: Obesity;   Vitamin D Deficiency
Interventions: Dietary Supplement: Pregnancy multi-vitamin (including 10μg vitamin D3);   Dietary Supplement: 10μg vitamin D3;   Dietary Supplement: 0μg vitamin D (placebo)
31 Recruiting Vitamin D, Bones, Nutritional and Cardiovascular Status
Condition: Vitamin D
Intervention: Other: Exploration of Vitamin D roles
32 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
33 Recruiting Vitamin D Deficiency and Replacement on Pulmonary and Endocrine Function in SCI
Conditions: Spinal Cord Injury;   Vitamin D Deficiency
Intervention: Drug: Vitamin D3
34 Recruiting The Effects of Vitamin D Supplementation on Patients With Type 2 Diabetes and Vitamin D Deficiency
Conditions: Diabetes Mellitus;   Vitamin D Deficiency
Intervention: Dietary Supplement: vitamin D3
35 Not yet recruiting Vitamin D Supplementation and Neurocognition
Conditions: Vitamin D Deficiency;   Neurocognitive Dysfunction
Intervention: Drug: Vitamin D
36 Not yet recruiting Does Vitamin D Alter Bone's Response to Vibration?
Conditions: Vitamin D Deficiency;   Osteoporosis
Intervention: Device: Mechanical Stimulation using whole body vibration
37 Recruiting The Impact of Severe Vitamin D Deficiency and Its Correction on Bone Mineral Density (BMD) in Postmenopausal Women
Condition: Vitamin D Deficiency
Intervention: Drug: Vitamin D
38 Recruiting Treatment of Vitamin D Deficiency in Intestinal Rehabilitation Clinic Patients With a Portable Ultraviolet B Lamp
Conditions: Vitamin D Deficiency;   Short Bowel Syndrome
Intervention: Device: Ultraviolet B lamp
39 Recruiting Study of the Efficacy and Safety of Cholecalciferol Supplementation on the Activity of Rheumatoid Arthritis in Patients With Vitamin D Deficiency
Conditions: Rheumatoid Arthritis;   Vitamin D Deficiency
Intervention: Other: cholecalciferol versus placebo
40 Not yet recruiting Roles of Vitamin D and HDL in Obese Children
Conditions: Obese;   Vitamin D Deficiency;   Low HDL
Intervention: Dietary Supplement: Vitamin D

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