Vitamin K is a fat-soluble vitamin, helpful in the maintenance of the skeletal and circulatory systems. You don't need to have it every day because any of the vitamin your body doesn't need immediately is stored in the liver for future use. It is needed for blood clotting, which means it helps wounds heal properly.
There is also increasing evidence that vitamin K is needed to help build strong bones. New research has concluded that vitamin K2 can aid recovery from hip fractures and help protect against osteoporosis.
The vitamin K family includes the forms phylloquinone (K1) that are typically found in cruciferous vegtables and menaquinone (K2), which are sourced from bacteria. Studies have shown K2 to be the more important nutrient in regards to bone health.Viridian K2 is extracted from the fermented soy food, natto.