999 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 Recruiting Effect of Oral Daily Supplementation With 400 IU Vs 200 IU of Vitamin D in Term Healthy Neonates
Condition: Vitamin D Deficiency
Intervention: Drug: Vitamin D
23 Not yet recruiting An Evaluation of the Effect of Vitamin D Supplementation on the Cognitive Function of Older Subjects With Low Levels of This Vitamin
Condition: VITAMIN D DEFICIENCY
Intervention: Drug: Vitamin D
24 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
25 Recruiting Preventing Health Disparities During Pregnancy Through Vitamin D Supplementation
Condition: Vitamin D Status During Pregnancy.
Interventions: Drug: Vitamin D3 4000 IU in gummy form;   Drug: Placebo gummy vitamin
26 Not yet recruiting Impact of Physical Activity and Vitamin D on Osteoarthritic Knee Pain
Condition: Knee Osteoarthritis
Interventions: Dietary Supplement: Vitamin D3 2000IU/daily 3 months;   Behavioral: PA intervention People with Osteoarthritis Walking Programme;   Other: Placebo capsule (Vitamin D): edible oil
27 Unknown  Vitamin D Supplements for HIV-positive Patients on cART
Condition: HIV-associated Co-morbidities
Interventions: Dietary Supplement: conventional vitamin D treatment;   Drug: tiered/titrated vitamin D dosing
28 Not yet recruiting Supplementation of Vitamin D in Patients With Type 2 Diabetes and Hypertension
Condition: Hypertension
Interventions: Dietary Supplement: supplementation of 100.000 IU of vitamin D3;   Dietary Supplement: placebo pill
29 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
30 Recruiting A Trial on Different Dosages of Vitamin D in Preterm Infants With Late-onset Sepsis
Conditions: Prematurity;   Late-onset Sepsis
Interventions: Drug: High-dose vitamin D 3;   Drug: Conventional-Dose Vitamin D 3
31 Not yet 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
32 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
33 Recruiting Vitamin E Supplementation in Burned Patients
Condition: Burn
Intervention: Drug: Vitamin E (dl-Alpha Tocopheryl)
34 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
35 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)
36 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
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 Unknown  Vitamin D Supplementation in Chronic Rhinosinusitis With Nasal Polyps
Condition: Chronic Sinusitis
Intervention: Biological: Vitamin D
39 Unknown  Effects of Vitamin D on Inflammation in Liver Disease
Conditions: Hepatitis C Infection;   Vitamin D Deficiency
Interventions: Drug: Vitamin D;   Drug: Placebo
40 Recruiting Comparison of Absorption of Vitamin D in Cystic Fibrosis
Condition: Cystic Fibrosis
Interventions: Dietary Supplement: Vitamin D Powder;   Dietary Supplement: Vitamin D Oil

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Indicates status has not been verified in more than two years