250 mg Calcium 500 mg of Vitamin C | as Seven Mineral Ascorbates Dietary SupplementEmergen-C for life!Emergen-C is so much more than just Vitamin C! The foundation of Emergen-C is built on seven mineral ascorbates. These mineral ascorbates of potassium, calcium, magnesium, manganese, sodium, chromium & zinc provide your body with 500 mg of vital, life-sustaining Vitamin C in a non-acidic, stomach-friendly formula. Unlike ordinary Vitamin C supplements, Emergen-C also has a total of 32 active mineral complexes along with key B Vitamins. All combined, Emergen-C is a potent blend of antioxidants, vitamins, minerals and other micronutrients that support healthy metabolic function."Calcium is essential for many cellular functions and helps prevent osteoporosis. All calcium is derived from the diet and supplements are recommended to maintain the recommended daily requirement. The Emergen-C Bone Health Formula supplement, with the added Vitamin C and Vitamin D, is recommended for "maximum absorption." Emergen-C Bone Health Formula, in conjunction with adequate nutrition and weight bearing exercise, is an important component fro maintaining peak bone mass at all ages." - Frederic G. Nicola, MD Chief of Orthopedic Surgery, Cedars-Sinai Medical Center, Los Angeles, CAPower for Bones!Vitamin C Essential in the production of collagen, the main constituent of connective tissue of the bones, which helps maintain the strength and flexibility of the bones.Calcium Essential for maintaining bone strength. Bones are constantly being remolded and require calcium to build up new bone mass.Vitamin D Helps maintain a proper balance of calcium and phosphorus to help bone growth and strength.