Pioneer Calcium/Magnesium Bone Protein & Trace Mineral Complex is a unique and potent calcium formula designed by holistic clinicians to help build and maintain bone mass. Calcium/Magnesium has long been pioneer'S top-selling formula, and for good reason! To begin with, it contains effective levels of two premium calcium forms, microcrystalline hydroxyapatite, and calcium citrate malate, both of which have been clinically proven to help rebuild bone mass. This exceptional pioneer formula is held in high regard by healthcare professionals and industry specialists alike. Many consider it to be far and away from the finest, most effective, and most complete calcium supplement available. Calcium/Magnesium Bone Protein & Trace Mineral Complex helps to provide a superior foundation for good, stable bone health, especially when taken with a high-quality multivitamin/mineral such as pioneer 1+Vitamin/Mineral, and in conjunction with daily exercise, and low fat, low protein, natural foods diet rich in dark green vegetables.