Bon-K2 HD tablet contain a unique blend of Calcium Carbonate, Vitamin D3 and Vitamin K2. Calcium is used to prevent or treat low blood calcium levels in people who do not get enough calcium from their diets.Calcium is important for growth and development of bones. Vitamin D3 is used in the absorption of calcium in the blood. Vitamin D3 helps in processing of essential minerals in the body like Calcium and Phosphorus. Lack of Vitamin D3 results in bone weakening, bone pain, and skin diseases. Vitamin K2 is one of the most important nutrients for long-term bone health and that it is even more important than calcium. Vitamin K2 is needed to help calcium and other minerals bind into the bone matrix to strengthen bones Directions of use:Ingest 1 tablet daily, before or after meals for maximum effect. Use under medical supervision.