Vitamin D |
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This article or section may be confusing or unclear for some readers, and should be edited to rectify this. Please improve the article, or discuss the issue on the talk page. Vitamin D is a hormone precursor that contributes to the maintenance of normal levels of calcium and phosphorus in the blood. Despite its name, vitamin D is not a true vitamin, but it could best be described as a conditional vitamin, since human skin can create it in some circumstances. Vitamin D is also known as calcif ...
Wikipedia - [full article]
Vitamin D Clinical Trials
- Randomized Trials of Vitamin Supplements and Eye Disease
ClinicalTrials.gov Identifier: NCT00000161 - Active, not recruiting
Macular Degeneration; Cataract
- Sunlight Exposures Effect on Serum Vitamin D Levels
ClinicalTrials.gov Identifier: NCT00473317 - Active, not recruiting
Vitamin D Deficiency
- Single-Dose Postpartum Vitamin A Supplementation of Mothers and Neonates
ClinicalTrials.gov Identifier: NCT00198718 - Active, not recruiting
Vitamin A Deficiency; HIV
- Vitamin D Administration in the Nursing Home
ClinicalTrials.gov Identifier: NCT00204919 - Active, not recruiting
- Vitamin D Deficiency; - Osteoporosis
- A Study to Assess the Effectiveness of an Investigational Drug in Elderly Subjects With Low Vitamin D Levels.
ClinicalTrials.gov Identifier: NCT00242476 - Active, not recruiting
Vitamin D Deficiency
- Vitamin K Injections for the Treatment of Painful Menstruation
ClinicalTrials.gov Identifier: NCT00104546 - Active, not recruiting
Dysmenorrhea
- Role of Fat Tissue in Vitamin D Metabolism
ClinicalTrials.gov Identifier: NCT00033826 - Active, not recruiting
Vitamin D; Adipose Tissue
- The Prevalence of Vitamin D Deficiency and Effects of Vitamin D Supplementation in HIV-1 Infected Patients
ClinicalTrials.gov Identifier: NCT00306410 - Recruiting
Vitamin D Deficiency; HIV Infections
- A Trial of High Dose Vitamin D Therapy on Musculoskeletal Symptoms and Bone Mineral Density in Anastrozole-Treated Early Stage Breast Cancer Patients With Marginal Vitamin D Status
ClinicalTrials.gov Identifier: NCT00263185 - Recruiting
Breast Neoplasms
- Gender, Obesity, C-Reactive Protein, and Oxidative Stress
ClinicalTrials.gov Identifier: NCT00079963 - Active, not recruiting
Cardiovascular Disease
- Dose-Finding Study for Vitamin K2 in Human Volunteers
ClinicalTrials.gov Identifier: NCT00483431 - Recruiting
Vitamin K-Status
- Optimizing Vitamin D Nutrition in Healthy Adults
ClinicalTrials.gov Identifier: NCT00327847 - Recruiting
Vitamin D Deficiency
- Vitamin D Status of Pregnant Women and Their Children in Eau Claire, South Carolina
ClinicalTrials.gov Identifier: NCT00412087 - Recruiting
Vitamin D Deficiency; Pregnancy
- Evaluation of Vitamin D Requirements During Pregnancy
ClinicalTrials.gov Identifier: NCT00292591 - Recruiting
Vitamin D Deficiency
- Establishing the Vitamin D Requirements During Lactation
ClinicalTrials.gov Identifier: NCT00412074 - Recruiting
Vitamin D Deficiency
- Impact of Consumption of Orange-Fleshed Sweet Potatoes on the Vitamin A Status of Bangladeshi Women of Reproductive Age
ClinicalTrials.gov Identifier: NCT00453648 - Recruiting
Vitamin A Deficiency
- Anti-Oxidant Treatment of Alzheimer''s Disease
ClinicalTrials.gov Identifier: NCT00117403 - Active, not recruiting
Alzheimer''s Disease
- Vitamin E and Namenda (Memantine) for the Treatment of Patients With Mild to Moderate Alzheimer''s Disease on Aricept (Donepezil)
ClinicalTrials.gov Identifier: NCT00235716 - Recruiting
Alzheimer''s Disease
- Oral Vitamin K for Warfarin Associated Coagulopathy
ClinicalTrials.gov Identifier: NCT00143715 - Active, not recruiting
...
- Pioglitazone vs. Vitamin E vs. Placebo for the Treatment of Non-Diabetic Patients with Nonalcoholic Steatohepatitis (PIVENS)
ClinicalTrials.gov Identifier: NCT00063622 - Active, not recruiting
Liver Diseases
- Impact of Maternal Vitamin A or Beta-Carotene Supplementation on Maternal and Infant Mortality in Bangladesh
ClinicalTrials.gov Identifier: NCT00198822 - Recruiting
Vitamin A Deficiency
- Effectiveness of a Vitamin Mineral Supplement
ClinicalTrials.gov Identifier: NCT00153764 - Active, not recruiting
Homocysteine; LDL cholesterol
- Selenium and Vitamin E in Preventing Prostate Cancer
ClinicalTrials.gov Identifier: NCT00006392 - Active, not recruiting
Prostate Cancer
- The Effect of Alendronate, Calcium, and Vitamin D on Bone Mineral Density in HIV Infected Patients
ClinicalTrials.gov Identifier: NCT00061256 - Active, not recruiting
HIV Infections
- Vitamin E in Aging Persons With Down Syndrome
ClinicalTrials.gov Identifier: NCT00056329 - Active, not recruiting
Down Syndrome; Alzheimer Disease
- Evaluation of Holotranscobalamin as an Indicator of Vitamin B12 Absorption
ClinicalTrials.gov Identifier: NCT00235573 - Recruiting
Vitamin B12 Malabsorption
- Vitamin D Deficiency, Insulin Resistance and FGF-23
ClinicalTrials.gov Identifier: NCT00491322 - Recruiting
Vitamin D Deficiency
- Vitamin A Supplementation in Preterm Infants
ClinicalTrials.gov Identifier: NCT00063596 - Active, not recruiting
Infant, Premature
- Characterization of Hyperparathyroidism and Vitamin D Deficiency in Obesity
ClinicalTrials.gov Identifier: NCT00288873 - Active, not recruiting
Vitamin D Deficiency; Secondary Hyperparathyroidism; Obesity
- How Vitamin D Analogues Affect Endothelial Cells in Patients on Dialysis
ClinicalTrials.gov Identifier: NCT00528788 - Recruiting
Hyperparathyroidism, Secondary; Kidney Failure, Chronic; Endothelial Cells; Vitamin D
- Vitamin E, Selenium, and Soy Protein in Preventing Cancer in Patients With High-Grade Prostate Neoplasia
ClinicalTrials.gov Identifier: NCT00064194 - Active, not recruiting
Prostate Cancer
- Vitamin-D and Crohn´s Disease.
ClinicalTrials.gov Identifier: NCT00132184 - Active, not recruiting
Crohn Disease
- How Many Patients Are in Need of Vitamin B12 Injections?
ClinicalTrials.gov Identifier: NCT00326833 - Recruiting
Vitamin B12 Deficiency
- DNA Changes That Affect Vitamin D Metabolism in Patients With Colorectal Cancer Receiving Vitamin D Supplements
ClinicalTrials.gov Identifier: NCT00550563 - Recruiting
Colorectal Cancer
- Effect of Vitamin D Supplementation on Health of Low Birth Weight Infants
ClinicalTrials.gov Identifier: NCT00415402 - Not yet recruiting
Vitamin D Deficiency
- Kabul Vitamin D Supplementation Trial
ClinicalTrials.gov Identifier: NCT00548379 - Not yet recruiting
Pneumonia; Vitamin D Deficiency
- Vitamin E in Preventing the Side Effects of Isotretinoin in Former and Current Smokers Who Are Receiving Isotretinoin to Prevent Lung Cancer
ClinicalTrials.gov Identifier: NCT00003599 - Active, not recruiting
Lung Cancer; prevention of lung cancer
- Trial of the Impact of Vitamin A on Maternal Mortality
ClinicalTrials.gov Identifier: NCT00211341 - Recruiting
Vitamin A Deficiency; Maternal Mortality; Maternal Morbidity
- Vitamin B12 Status and Response to Vitamin B12 Supplementation in Patients With Parkinson's Disease
ClinicalTrials.gov Identifier: NCT00208611 - Recruiting
Parkinson's Disease
- VITATOPS: A Study of VITAmins TO Prevent Stroke
ClinicalTrials.gov Identifier: NCT00097669 - Recruiting
Stroke; Transient Ischemic Attack
- Prevention of Alzheimer's Disease by Vitamin E and Selenium (PREADVISE)
ClinicalTrials.gov Identifier: NCT00040378 - Recruiting
Alzheimer Disease
- Selenium and Vitamin E Cancer Prevention Trial (SELECT)
ClinicalTrials.gov Identifier: NCT00076128 - Recruiting
Prostate Cancer
- Vitamin A With BCG Vaccine
ClinicalTrials.gov Identifier: NCT00168597 - Active, not recruiting
Mortality; Morbidity
- Women's Antioxidant and Cardiovascular Study (WACS)
ClinicalTrials.gov Identifier: NCT00000541 - Active, not recruiting
Cardiovascular Diseases; Coronary Arteriosclerosis; Coronary Disease; Heart Diseases; Myocardial Infarction; Myocardial Ischemia
- Prevention of Vitamin D Deficiency
ClinicalTrials.gov Identifier: NCT00494104 - Recruiting
Vitamin D Deficiency
- The Effect of High Dose Vitamin C in Burn Patients
ClinicalTrials.gov Identifier: NCT00350077 - Active, not recruiting
Burns
- Investigating the Effect of Vitamin A Supplementation on Retinitis Pigmentosa
ClinicalTrials.gov Identifier: NCT00065455 - Recruiting
Retinitis Pigmentosa
- Omeprazole and Amoxicillin and/or Vitamin and Mineral Supplements and/or Garlic Supplements in Preventing Stomach Cancer in Patients With Precancerous Stomach Lesions
ClinicalTrials.gov Identifier: NCT00134121 - Active, not recruiting
Gastric Cancer; Precancerous Condition
- Calcium and Vitamin D Malnutrition in Elderly Women
ClinicalTrials.gov Identifier: NCT00352170 - Active, not recruiting
Osteoporosis; Secondary Hyperparathyroidism
- Trial of Aspirin and Vitamin E in Women (Women's Health Study - WHS)
ClinicalTrials.gov Identifier: NCT00000479 - Active, not recruiting
Cardiovascular Diseases; Cerebrovascular Disorders; Coronary Disease; Heart Diseases; Myocardial Infarction; Myocardial Ischemia; Vascular Diseases
- Vitamin K Supplementation in Post-Menopausal Osteopenia
ClinicalTrials.gov Identifier: NCT00150969 - Active, not recruiting
Post-Menopausal Osteoporosis; Post-Menopausal Osteopenia
- Isotretinoin With or Without Vitamin E for Prevention of Lung Cancer
ClinicalTrials.gov Identifier: NCT00002586 - Active, not recruiting
Non-small cell lung cancer; Small Cell Lung Cancer; Drug Toxicity
- Vitamin A Supplementation With Bacille Calmette Guerin (BCG) Vaccine
ClinicalTrials.gov Identifier: NCT00168610 - Active, not recruiting
Infant Mortality; Morbidity
- Vitamin D/Calcium Polyp Prevention Study
ClinicalTrials.gov Identifier: NCT00153816 - Recruiting
Colorectal Cancer; Polyps; Adenomas
- Effects of Vitamin B12 On the Body''s Internal Clock
ClinicalTrials.gov Identifier: NCT00120484 - Recruiting
Sleep Disorders, Circadian Rhythm
- Does Treatment of Hypovitaminosis D Increase Calcium Absorption?
ClinicalTrials.gov Identifier: NCT00581828 - Active, not recruiting
Osteoporosis; Osteopenia; Vitamin D Deficiency; Hypoparathyroidism; Hypercalciuria; Hypercalcemia
- Vitamin D Levels and Vitamin D Education in Geriatric Patients
ClinicalTrials.gov Identifier: NCT00273611 - Completed
Vitamin D
- Feasibility Study of 2000 IU Per Day of Vitamin D for the Primary Prevention of Type 1 Diabetes
ClinicalTrials.gov Identifier: NCT00141986 - Recruiting
Type 1 Diabetes
- WENBIT - Western Norway B Vitamin Intervention Trial
ClinicalTrials.gov Identifier: NCT00354081 - Active, not recruiting
Coronary Artery Disease; Myocardial Infarction; Cerebrovascular Stroke
- Isotretinoin, Interferon alfa, and Vitamin E in Treating Patients With Stage III or Stage IV Head and Neck Cancer
ClinicalTrials.gov Identifier: NCT00054561 - Active, not recruiting
Hypopharyngeal Cancer; Laryngeal Cancer; lip and oral cavity cancer; Oropharyngeal Cancer
- Effect of Helicobacter Pylori on the Availability of Vitamin E and C
ClinicalTrials.gov Identifier: NCT00303160 - Active, not recruiting
Heliobacter Pylori Infection
- Calcium, Vitamin D, and Colon Cancer Risk Biomarkers
ClinicalTrials.gov Identifier: NCT00208793 - Active, not recruiting
Colonic Polyps; Adenomatous Polyps
- Vitamin A and Response to Endotoxin
ClinicalTrials.gov Identifier: NCT00168649 - Active, not recruiting
TNF-Alfa; Endotoxin Levels
- Velcade, Trisenox, Vitamin C and Melphalan for Myeloma Patients
ClinicalTrials.gov Identifier: NCT00469209 - Active, not recruiting
Myeloma
- The Effect of Calcium and Vitamin D in Patients With Heart Failure
ClinicalTrials.gov Identifier: NCT00497900 - Not yet recruiting
Heart Failure; Vitamin D Deficiency
- Vitamin D Effects in Overweight Patients
ClinicalTrials.gov Identifier: NCT00493012 - Active, not recruiting
Overweight; Obesity
- Effect of Vitamin C on Iron Absorption
ClinicalTrials.gov Identifier: NCT00570895 - Enrolling by invitation
Iron Deficiency
- EUROPAC-2 - Pain Treatment of Hereditary and Idiopathic Pancreatitis
ClinicalTrials.gov Identifier: NCT00142233 - Recruiting
Hereditary Pancreatitis and idiopathic chronic pancreatitis
- A Trial to Study the Effect of Vitamin D Supplementation on Glucose and Insulin Metabolism in Centrally Obese Men
ClinicalTrials.gov Identifier: NCT00347542 - Active, not recruiting
Diabetes Mellitus, Non-Insulin-Dependent; Obesity
- The Body's Affect on Vitamin C
ClinicalTrials.gov Identifier: NCT00001309 - Active, not recruiting
Healthy
- Vitamin E in Preventing Peripheral Neuropathy Caused by Chemotherapy in Patients Receiving Chemotherapy for Cancer
ClinicalTrials.gov Identifier: NCT00363129 - Active, not recruiting
Neurotoxicity; Unspecified Adult Solid Tumor, Protocol Specific
- Vitamin D Deficiency Causes Immune Dysfunction and Enables or Perpetuates the Development of Rheumatoid Arthritis
ClinicalTrials.gov Identifier: NCT00279461 - Not yet recruiting
Arthritis, Rheumatoid; Vitamin D Deficiency
- Oxidative Stress and Vitamin E Requirements
ClinicalTrials.gov Identifier: NCT00067899 - Completed
Smoking
- Effect of Iron and Vitamin E Supplementation on Disease Activity in Patients with Either Crohn''s Disease or Ulcerative Colitis
ClinicalTrials.gov Identifier: NCT00152841 - Recruiting
Crohn''s Disease; Ulcerative Colitis; mild or moderate anaemia
- Can Intravenous Vitamin C Improve Skin Hyperpigmentation in Long-Term Hemodialysis Patients?
ClinicalTrials.gov Identifier: NCT00172302 - Not yet recruiting
Kidney Failure, Chronic
- Diarrhea Brazil
ClinicalTrials.gov Identifier: NCT00133406 - Active, not recruiting
Diarrheal diseases
- Pamidronate, Vitamin D, and Calcium for the Bone Disease of Kidney and Heart Transplantation
ClinicalTrials.gov Identifier: NCT00302627 - Active, not recruiting
Transplant Bone Disease
- Clinical Research Network in Non-alcoholic Steatohepatitis - Pediatric Trial
ClinicalTrials.gov Identifier: NCT00063635 - Active, not recruiting
Fatty Liver
- Vitamin A Supplementation With Routine Childhood Vaccines and Mortality and Morbidity
ClinicalTrials.gov Identifier: NCT00168623 - Active, not recruiting
Mortality; Morbidity
- Different Doses of Vitamin A Supplementation and Male and Female Morbidity and Mortality
ClinicalTrials.gov Identifier: NCT00168636 - Active, not recruiting
Mortality; Morbidity
- Penicillamine Chelation for Children With Lead Poisoning
ClinicalTrials.gov Identifier: NCT00552630 - Active, not recruiting
Lead Poisoning; Vitamin D Deficiency
- Vitamin E and Pentoxifylline in Treating Women With Lymphedema After Radiation Therapy for Breast Cancer
ClinicalTrials.gov Identifier: NCT00022204 - Active, not recruiting
stage I breast cancer; Male Breast Cancer; stage IIIA breast cancer; stage II breast cancer; Quality of Life; Lymphedema
- Vitamin D and Blood Pressure
ClinicalTrials.gov Identifier: NCT00459563 - Recruiting
Hypertension
- Randomized Trial of Vitamin A and Vitamin E Supplementation for Retinitis Pigmentosa
ClinicalTrials.gov Identifier: NCT00000114 - Completed
Retinitis Pigmentosa
- Determinants of Vitamin K Metabolism
ClinicalTrials.gov Identifier: NCT00336232 - Recruiting
Aging; Osteoporosis
- Vitamin D Supplementation in Older Women
ClinicalTrials.gov Identifier: NCT00472823 - Recruiting
Osteoporosis; Aging
- Effects of Vitamin D Replacement in Patients With PHPT
ClinicalTrials.gov Identifier: NCT00538720 - Recruiting
Hyperparathyroidism
- Vitamin A to Reduce HIV in Vaginal Secretions and Prevent Viral Transmission
ClinicalTrials.gov Identifier: NCT00053612 - Completed
HIV Infections; Vitamin A Deficiency; HIV Seronegativity
- Vitamin D to Slow Progression of Knee Osteoarthritis
ClinicalTrials.gov Identifier: NCT00306774 - Active, not recruiting
Osteoarthritis, Knee
- Physicians' Health Study II: Vitamin E, Ascorbic Acid, Beta Carotene, and/or Multivitamins in Preventing Cancer and Cardiovascular Disease in Older Healthy Male Doctors
ClinicalTrials.gov Identifier: NCT00270647 - Active, not recruiting
Colorectal Cancer; Prostate Cancer; Unspecified Adult Solid Tumor, Protocol Specific
- Correction of Vitamin D Inadequacy in Nursing Home Residents
ClinicalTrials.gov Identifier: NCT00204906 - Recruiting
Hypovitaminosis D
- Bangladesh Vitamin E and Selenium Trial
ClinicalTrials.gov Identifier: NCT00392561 - Recruiting
Arsenical Skin Lesions
- BVAIT: B-Vitamin Atherosclerosis Intervention Trial
ClinicalTrials.gov Identifier: NCT00114400 - Completed
Atherosclerosis
- SEARCH: Study of the Effectiveness of Additional Reductions in Cholesterol and Homocysteine
ClinicalTrials.gov Identifier: NCT00124072 - Active, not recruiting
Cardiovascular Disease
- Safety Study of Vitamin K2 During Anticoagulation in Human Volunteers
ClinicalTrials.gov Identifier: NCT00512928 - Recruiting
Healthy
- Randomized Trial for Retinitis Pigmentosa
ClinicalTrials.gov Identifier: NCT00000116 - Active, not recruiting
Retinitis Pigmentosa
- Oral Vitamin B12 as Potential Treatment of Recurrent Aphthous Stomatitis
ClinicalTrials.gov Identifier: NCT00288769 - Active, not recruiting
Recurrent Aphthous Stomatitis
- Folic Acid for Vascular Outcome Reduction In Transplantation (FAVORIT)
ClinicalTrials.gov Identifier: NCT00064753 - Active, not recruiting
Renal transplant recipients
- Vitamin A and Very Low Birthweight Babies (VitAL)
ClinicalTrials.gov Identifier: NCT00417404 - Recruiting
Preterm Birth; Retinopathy of Prematurity
- Clinical Trial of Vitamin E to Treat Muscular Cramps in Patients With ALS
ClinicalTrials.gov Identifier: NCT00372879 - Recruiting
Amyotrophic Lateral Sclerosis

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