Calboral-DX is a high-strength calcium and vitamin D₃ supplement designed to support bone health. Each tablet contains 600 mg of elemental calcium (from coral calcium carbonate) and 400 IU of vitamin D₃ (cholecalciferol). It is used to prevent and treat conditions caused by calcium and vitamin D deficiency such as osteoporosis, osteomalacia, rickets, and tetany. It is also beneficial during pregnancy, lactation, and old age to maintain strong bones and proper calcium metabolism.