Vibrant D3 5,000 Plus K2 is a natural, soy-free, bioidentical vitamin D supplement. Vitamin D, considered both a hormone and a vitamin, is manufactured in response to skin's exposure to sunlight and is essential to the body’s absorption of calcium. Natural vitamin D3 (cholecalciferol) is four times more potent than synthetic vitamin D2.* In Latin, calciferol means “calcium carrier.” Additionally, vitamin D has been the subject of numerous studies for its effect on the immune system by promoting phagocytosis and immunomodulatory functions.* One Softgel Contains Vitamin D₃ (as cholecalciferol) (5,000 IU) 125 mcg Vitamin K₂ (as menaquinone 7)† 200 mcg Other Ingredients: Safflower oil, gelatin (bovine), glycerin, purified water. Does Not Contain: Milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soy, artificial colors, sweeteners or preservatives.Caution: Keep out of reach of children.Storage: Keep tightly closed in a cool, dry place.