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386 studies found for:    Open Studies | "Vitamins"
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Rank Status Study
21 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
22 Recruiting Vitamin D Supplementation as Non-toxic Immunomodulation in Children With Crohn's Disease
Conditions: Crohn's Disease;   Vitamin D Deficiency
Intervention: Drug: Cholecalciferol
23 Not yet recruiting Vitamin D Substitution During Winter Time
Condition: Vitamin D Substitution
Intervention: Drug: Colecalciferol
24 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
25 Recruiting Vitamin D Supplementation and Immunity/Physical Performance
Condition: Vitamin D Status
Interventions: Dietary Supplement: Oral Vitamin D3;   Dietary Supplement: Placebo Oral Vitamin D3;   Radiation: Solar simulated radiation (SSR);   Radiation: Placebo SSR
26 Recruiting Vitamin D Supplementation on Physical and Cognitive Function-Pilot Study
Conditions: Renal Dialysis;   Vitamin D Deficiency
Intervention: Dietary Supplement: Cholecalciferol (Vitamin D)
27 Not yet recruiting Vitamin D for Muscle Metabolic Function in Cancer Cachexia
Conditions: Cancer Cachexia;   Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D;   Dietary Supplement: Placebo
28 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
29 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)
30 Recruiting Is Vitamin D2 Treatment-associated Decrease in 25(OH)D3 Level a Reciprocal Phenomena?
Conditions: Vitamin D Deficiency;   25-Hydroxyvitamin D Concentration
Interventions: Drug: Vitamin D3;   Drug: Vitamin D2;   Drug: Placebo oral capsule
31 Not yet recruiting Blood Pressure in Blacks and Calcium (BBC) and Vitamin D Study
Conditions: Hypertension;   Vitamin D Deficiency
Intervention: Drug: Cholecalciferol
32 Recruiting Efficacy of Vitamin A Fortified Rice in Lactating Thai Women
Condition: Vitamin A Status
Interventions: Other: Vitamin A fortified rice;   Other: Normal rice
33 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
34 Not yet recruiting Vitamin D Supplementation and Neurocognition
Conditions: Vitamin D Deficiency;   Neurocognitive Dysfunction
Intervention: Drug: Vitamin D
35 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
36 Recruiting Vitamin D Repletion and Maintenance in IBD: How Much and How Often
Conditions: Inflammatory Bowel Diseases;   Vitamin D Deficiency
Intervention: Dietary Supplement: Vitamin D (ergocalciferol and/ or cholecalciferol)
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 The Impact of Vitamin D Deficiency on Hypocalcaemia Following Total Thyroidectomy
Conditions: Hypocalcemia;   Vitamin D Deficiency
Intervention: Other: vitamin D levels and Calcium levels examination

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