Osteo formula contains the three most clinically accepted and bioavailable forms of calcium along with essential bone building and strengthening ingredients that contribute to a highly successful solution to osteoporosis. Each serving contains 600 mg of the most bioavailable forms of calcium, calcium citrate, calcium citrate-malate and microcrystalline Ipriflavone inhibits the breakdown of existing bone while increasing new bone formation and supports type I collagen Vitamin D3 stimulates the absorption of calcium and Vitamin K increases bone density