Dietary Supplement. Double the Vitamin D3 (This product contains 800 IU of vitamin D3 per serving as compared to a calcium with Vitamin D3 product that contains 400 IU of vitamin D3 per serving). For bone health. 1200 mg calcium & 1600 IU vitamin D3 in just two tablets. Only 1 tablet 2 X per day. May reduce the risk of osteoporosis (Adequate calcium and vitamin D throughout life, as part of a well-balanced diet, may reduce the risk of osteoporosis). Smaller tablets (as compared to similar store brand calcium with vitamin D products). Compare to Caltrate 600 + D ingredients (This product is not manufactured or distributed by Pfizer, marketer of Caltrate 600+D). Calcium is an essential mineral for strong teeth and bones. It plays an important role in blood clotting and muscle contraction and helps to maintain a healthy nervous system. Helps build strong bones. Vitamin D to help calcium absorption. Quality guaranteed. This TopCare product is laboratory tested to guarantee its highest quality. Your total satisfaction is guaranteed. Questions? 1-888-423-0139? TopCare at topco.com. (This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease).