Vitamin A (Retinol) Clinical Trials

• Effects of Topical Vitamin K, Vitamin K and Retinol, and Arnica on Post-Laser Bruising
  ClinicalTrials.gov Identifier: NCT00363038 - Completed
  Ecchymosis
  
• Retinol Equivalence of Plant Carotenoids in Children
  ClinicalTrials.gov Identifier: NCT00082420 - Completed
  Vitamin A Deficiency
  
• Vitamin A Supplementation in Newborns Study
  ClinicalTrials.gov Identifier: NCT00114868 - Completed
  Infant, Newborn
  
• 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
  
• Retinol Equivalence of Plant Carotenoids in Children
  ClinicalTrials.gov Identifier: NCT00072696 - Not yet recruiting
  Healthy
  
• 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