With Magnesium & Vitamin D3, 2x more Vitamin D, 40% smaller wafers. Twinlab Calcium Citrate Chewable Wafers provide an easily absorbed and digested form of calcium that is excellent for people with lower levels of stomach acid, individuals with greater calcium needs, or those who have difficulty swallowing and digesting large calcium tablets. We've provided 800 IU of Vitamin D3 (per adult serving to support optima calcium absorption. Adequate calcium and Vitamin D3 as part of a healthful diet, along with physical activity, may reduce the risk of osteoporosis in later life. Each chewable wafer is lightly sweetened with Sucralose. Contains no added corn, soy, yeast, wheat, milk or egg products. Not salt, artificial colors, flavors, or preservatives used.