1163 studies found for:    Open Studies | vitamins
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Rank Status Study
21 Unknown  Vitamin D Deficiency Causes Immune Dysfunction and Enables or Perpetuates the Development of Rheumatoid Arthritis
Conditions: Arthritis, Rheumatoid;   Vitamin D Deficiency
Interventions: Drug: Placebo in arm A and Vitamin D in arm B;   Drug: vitamin D 3 for arm A ,and matching placebo for arm B
22 Unknown  The Beneficial Effect of Vitamin D Supplement to Peg Interferon Alpha 2a or to Telbivudine Monotherapy in Patients With Chronic Hepatitis B Virus (HBV) Infection
Condition: Hepatitis B Virus
Interventions: Drug: Peginterferon + Vitamin D;   Drug: Peginterferon;   Drug: Sebivo;   Drug: entecavir+ vitamin d
23 Recruiting Dose-dependent Effects of Vitamin D on Bone Health
Condition: Age-Related Osteoporosis
Intervention: Dietary Supplement: Vitamin D
24 Recruiting Study of Vitamin D in the Severely Mentally Ill
Conditions: Schizophrenia;   Schizoaffective Disorder
Intervention: Dietary Supplement: Vitamin D3
25 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
26 Unknown  Effect of Vitamin D Supplementation on Hemoglobin A1c
Conditions: Diabetes Mellitus;   Vitamin D Deficiency
Intervention: Dietary Supplement: Vitamin D
27 Not yet recruiting Vitamin D Supplementation and TB
Conditions: Tuberculosis;   Vitamin D;   Immunity
Interventions: Dietary Supplement: Vitamin D (600 IU);   Dietary Supplement: Vitamin D (2000 IU);   Dietary Supplement: Vitamin D (4000 IU);   Other: Placebo
28 Unknown  The Impact of Vitamin on the Clinical Course in Cases Infected by Novel H1N1 Influenza Virus A
Condition: H1N1 Influenza
Interventions: Drug: Vitamin (vitamin A 15 mg,C 500 mg, E 400IU);   Drug: Placebo (digestive tablet)
29 Recruiting Comparison of Absorption of Vitamin D in Cystic Fibrosis
Condition: Cystic Fibrosis
Interventions: Dietary Supplement: Vitamin D Powder;   Dietary Supplement: Vitamin D Oil
30 Recruiting Testosterone Pellets Plus Vitamin D and E Versus Vitamin D and E Alone for the Treatment of Peyronie's Disease
Condition: Peyronie's Disease
Interventions: Drug: Vitamin D2;   Drug: Vitamin E;   Drug: Testosterone Pellets
31 Recruiting Study to Identify Transcriptional Targets of Vitamin D in Patients With Stage I-III Colon Cancer or Resectable Colon Cancer Liver Metastases Receiving Preoperative Vitamin D Supplementation.
Conditions: Stage, Colon Cancer;   Stage I-III Colon Cancer;   Stage IV Colon Cancer With Resectable Liver Metastases
Intervention: Drug: Vitamin D3
32 Recruiting Evaluating Vitamin D Content in Mushrooms
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Mushroom Vitamin D2;   Dietary Supplement: Cholecalciferol;   Dietary Supplement: Vitamin D2 - Ergocalciferol;   Dietary Supplement: Mushroom Extract
33 Recruiting Vitamin D Treatment and Hypogonadism in Men
Condition: Hypogonadism
Interventions: Drug: Vitamin D supplementation in hypogonadal men;   Drug: Vitamin D supplementation in eugonadal men;   Drug: Placebo hypogonadal;   Drug: Placebo eugonadal
34 Recruiting Dose-related Effects of Vitamin D3 on Immune Responses in Patients With Clinically Isolated Syndrome
Conditions: Clinically Isolated Syndrome;   Multiple Sclerosis
Interventions: Dietary Supplement: 5000IU vitamin D;   Dietary Supplement: 10000IU vitamin D;   Other: Placebo
35 Unknown  Effects of Vitamin D and Calcium Supplementation on Inflammatory Biomarkers and Adypocytokines in Diabetic Patients
Condition: Nutritional and Metabolic Disease
Interventions: Dietary Supplement: vitamin D3 supplement;   Dietary Supplement: calcium supplement;   Dietary Supplement: vitamin D3 and calcium supplement;   Dietary Supplement: placebo
36 Recruiting Effects of Vitamin D Insufficiency in Man
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D2;   Dietary Supplement: Vitamin D3
37 Unknown  Effect of Vitamin D on Retinal Changes in Patient With Optic Neuritis by Optic Coherence Tomography
Condition: Optic Neuritis
Interventions: Drug: Vitamin D;   Drug: Vitamin D withheld
38 Recruiting Vitamin D Intervention in Infants
Condition: Vitamin D Status
Interventions: Dietary Supplement: Vitamin D at 30 ug/day;   Dietary Supplement: Vitamin D at 10 ug/day
39 Unknown  Intratracheal Vitamin A Administration With Surfactant for Newborn Respiratory Distress Syndrome
Conditions: RDS;   Infant, Newborn;   Vitamin A;   Surfactant
Interventions: Drug: surfactant;   Drug: surfactant+vitamin A
40 Recruiting Anti-proliferative Effects of Vitamin D and Melatonin in Breast Cancer
Condition: Early Stage Breast Cancer
Interventions: Drug: Melatonin;   Drug: Vitamin D;   Drug: Placebo (melatonin);   Drug: Placebo (vitamin D)

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Indicates status has not been verified in more than two years