New research focuses on the synergistic relationship between vitamin K2 and vitamin D3 , for good bone and cardiovascular health. Therefore, vitamin K and vitamin D not only share similar qualities but also act synergistically with each other within the body. Supports healthy calcium balance, promotes bone health and proper calcium storage, supports cardiovascular health, enhances immune function. How to use 1 ml or 2 ml directly in the mouth, you can also mix it in a glass of water or juice, but never mix it with hot drinks. Follow the recommendations of your health professional. Shake before using.