Viridian Vitamin K
There are two main forms of vitamin K: phylloquinone, also known as phytonadione, (vitamin K1) and menaquinones (vitamins K2). K1 is found in green leafy vegetables such as lettuce, broccoli and spinach, and makes up about 90 per cent of the vitamin K in a typical Western diet; while K2, which makes up about 10 per cent of Western vitamin K consumption, is found in fermented foods such as Natto. Vitamin K2 can also be synthesised in a healthy GI tract by the microflora. Studies have shown the body’s ability to convert K1 into the K2 form at a rate of up to 90%.
All K2 currently available in supplement form has been subjected to animal testing. Ethical companies will use K1 and adjust levels to meet supplemental requirements.