Adequate calcium in a healthy diet may help prevent osteoporosis later in life but most adults, especially women, fall short of their daily calcium requirements. Maximum Strength Nature Made Calcium 750mg with Vitamins D and K can help maintain and build strong bones and teeth. Each tablet delivers 750 mg of calcium, 500 IUs of vitamin D-3 for calcium absorption, and 40 mcg of vitamin K for bone health support.Nature Made Calcium 750 mg with Vitamins D and K is guaranteed to meet our high quality standards it is made from carefully selected ingredients under strict manufacturing processes.