Life Extension Mega Vitamin K2 is a high potency supplement designed to support strong bones and heart health. Each capsule contains 45,000 mcg of MK4, a clinically-studied dose of menaquinone-4, which is effective in maintaining healthy bone density. This supplement encourages the activity of osteoblasts, the cells responsible for building bones, and helps in gluing calcium and other essential minerals to the bone matrix, making it stronger. The product is non-GMO, gluten-free, and manufactured in the USA with the highest standards of purity and potency.