1. *Fat-soluble vitamins* These dissolve in fats and oils and are stored in the body’s fatty tissues and liver. 1. Vitamin A (Retinol) Fxn: Vision, skin health, immune function 2. Vitamin D Vitamin D2: Ergocalciferol Vitamin D3: Cholecalciferol Fxn: Calcium absorption, bone health, immune support 3. Vitamin E ( Tocopherol) Fxn: Antioxidant, protects cells 4. Vitamin K Vitamin K1: Phylloquinone (found in green leafy vegetables) Vitamin K2: Menaquinone (produced by gut bacteria and found in fermented foods) Fxn: Essential for blood clotting and bone metabolism.