1004 studies found for:    Open Studies | vitamins
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Rank Status Study
21 Recruiting Calcium and High-dose Vitamin D Supplementation on Bone Mineral Density Among HIV-infected Children and Adolescents
Conditions: Adverse Bone Health;   HIV Infection
Interventions: Dietary Supplement: High dose vitamin D and calcium;   Dietary Supplement: Normal dose vitamin D and calcium
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 Vitamin E Supplementation in Burned Patients
Condition: Burn
Intervention: Drug: Vitamin E (dl-Alpha Tocopheryl)
24 Recruiting Can Vitamin D Supplementation in Infants Prevent Food Allergy in the First Year of Life? The VITALITY Trial
Condition: Food Allergy
Interventions: Drug: Vitamin D;   Drug: placebo
25 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)
26 Recruiting A Study Evaluating the Effect of Vitamin D on Clinical Outcome in Autistic Children
Condition: Autism
Interventions: Drug: Vitamin D3;   Other: Placebo
27 Not yet recruiting Effects of Vitamin D Fortification on Vitamin D Metabolite Profiles and Status in Vitamin D Insufficient Individuals
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Rooibos Iced-Tea (Control);   Dietary Supplement: Rooibos Tea - Vitamin D3;   Dietary Supplement: Rooibos Tea- Vitamin D3 & Calcium
28 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
29 Unknown  Vitamin D Supplementation in Chronic Rhinosinusitis With Nasal Polyps
Condition: Chronic Sinusitis
Intervention: Biological: Vitamin D
30 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
31 Unknown  Effects of Vitamin D on Inflammation in Liver Disease
Conditions: Hepatitis C Infection;   Vitamin D Deficiency
Interventions: Drug: Vitamin D;   Drug: Placebo
32 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)
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 Effect of Vitamin C on Postoperative Pain After Laparoscopic Cholecystectomy
Conditions: Chronic Cholecystitis;   Cholelithiasis
Interventions: Drug: Vitamin C;   Drug: Placebo
35 Unknown  Influence of Vitamin D on Vascular Function in Adolescents and Young Adults With Type 1 Diabetes
Condition: Diabetes Mellitus, Type 1
Intervention: Dietary Supplement: Vitamin D
36 Recruiting Vitamin D and Muscle Metabolic Function
Condition: Healthy
Interventions: Dietary Supplement: vitamin D;   Other: aerobic training
37 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
38 Recruiting Melatonin and Vitamin D in Breast Cancer
Condition: Breast Cancer
Interventions: Drug: Melatonin;   Drug: Vitamin D;   Drug: Placebo
39 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
40 Recruiting Allergic Rhinitis, Immunotherapy and Vitamin d
Condition: Allergy
Interventions: Drug: Vitamin D3;   Drug: placebo

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Indicates status has not been verified in more than two years