Caltrate 600+D3 Calcium and Vitamin D Supplement Tablets offer the highest level of vitamin D3 (1) to help maximize calcium absorption and support healthy bones, joints and muscles (2) so you can live life to the fullest. Formulated with calcium carbonate—nature's most concentrated form of calcium—Caltrate contains 600 mg of calcium per tablet. Your body needs calcium for more than just strong bones; it also plays a role in supporting your everyday activities like muscle contractions, blood clotting and nerve function. In addition to calcium, your body needs vitamin D to help calcium work for you. Caltrate calcium with vitamin D supplements contain high levels of vitamin D3 to help maximize calcium absorption and maintain healthy bones. (2) Simply take one to two tablets daily with food or as directed by a physician to get the calcium and vitamin D your body needs to support healthy bones and muscles and keep you moving. (2) In addition to 600+D3 Calcium and Vitamin D, Caltrate tablets are also available in 600+D3 plus Minerals. (1) Per tablet; among leading calcium supplement brands. (2) These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.