Calcium is crucial to everyone. So Osteocare Original is scientifically developed to complement your dietary intake at every stage of life.Osteocare 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 because it is the specific form made in the human body and therefore more effective than D2 which is found in some supplements.