CanPrev Osteo Prolong 120 Veggie CapsOptimizes calcium absorption and utilization Contains a balanced ratio of elemental calcium and magnesium Magnesium bis glycinate is easy and gentle on the bowels With added vitamin D3, vitamin K1, boron and zin Believe it or not, your bones are alive. They are constantly remodelling, like you do with your house when rooms start looking worn or dated. You take the old kitchen or bathroom fixtures out and put all new ones in. Your bones do the same.