Osteocare174 is the uk39s no1 bone health formula and has been scientifically developed on the basis of the very latest research to provide a rich source of calcium and co factors including vitamin d which helps with the normal absorption of calcium by the body osteocare174 contains the preferred d3 form of vitamin d vitamin d3 also known as cholecalciferol is the form of vitamin d that is produced by the skin on exposure to sunlight d3 is the preferred form of vitamin d