Vitamin A (Retinol) Function and Deficiency
- Retinol
- Constituent of Visual Pigments
- Differentiation of Epithelial Cells into Specialized Tissue
- Night Blindness
- Dry Skin
- Used to Treat Measles
- Antioxidant
Vitamin A (Retinol) Toxicity
- Alopecia
- Vision Changes
- Headache
- Skin Changes
- Hyperlipidemia
- Hepatotoxicity
- Arthralgias
- Teratogen
- Cleft palate
- Cardiac Abnormalities
Vitamin D Metabolism/Mechanism
- Ergocalciferol (Vitamin D2)
- Plant Sources
- Cholecalciferol (Vitamin D3)
- Sunlight Conversion in Skin
- 7-Dehydrocholesterol
- Liver Hydroxylation
- 25-(OH) D (25-hydroxyvitamin D)
- Storage Form
- Kidney Hydroxylation
- 1,25-(OH)2 D (1,25-dihydroxyvitamin D)
- Active Form Calcitriol
- Absorbs Calcium and Phosphorus in Intestine
Ergocalciferol (Vitamin D2)
- Vitamin D2
- Hypoparathyroidism
- Rickets
- Hypophosphatemia
- Fatigue
- Constipation
- Hypercalcemia
- Kidney Stones
Cholecalciferol (Vitamin D3)
- Vitamin D3
- Dietary Supplement
- Vitamin D Deficiency
- Fatigue
- Constipation
- Hypercalcemia
- Kidney Stones
- More Effective Than Ergocalciferol
- Hypervitaminosis D
Vitamin D Deficiency
- Rickets in children
- Bending bones
- Rachitic rosary
- Breast milk has decreased vitamin D
- Osteomalacia in adults
- Tetany from Hypocalcemia
Vitamin D Toxicity
- Kidney Stones
- Metastatic Calcification of the Kidney
- Loss of Appetite
- Abdominal Pain
- Sarcoidosis
Vitamin E (Alpha-tocopherol)
- Antioxidant
- Fat Malabsorption Syndrome
- Alpha-TTP Deficiency
- Bleeding
- Increased Risk Hemorrhagic Stroke
- Limit Doses < 200 IU per Day
- Nuts and Whole Grains
- Vegetable Oils
Vitamin E Deficiency
- Antioxidant
- Protects Erythrocytes
- Protects from Free Radical Damage
- Hemolytic Anemia
- Posterior Column
- Spinocerebellar Tract
Vitamin K
- Dark Green Leafy Vegetables
- Synthesized by Intestinal Flora
- Activated by Epoxide Reductase
- Gamma Carboxylation of Glutamate
- Activation of Clotting Factors II, VII, IX, X, Protein C and S
- Deficiency with Broad Spectrum Antibiotics
- Neonatal Hemorrhage with Increased PT and aPTT
- Warfarin is a Vitamin K Antagonist
Vitamin K1 (Phytonadione)
- Synthesizes Clotting Factors II, VII, IX, X
- Hypoprothrombinemia
- Newborn Prophylaxis
- Bleeding from Warfarin Overdose
- Shock
- Kernicterus
- Cardiac Arrest
- Bile Salts required for Intestinal Absorption
- Increased Risks with IV Administration