Enerex OSteo Cal:Mag with Vitamin K2 and Boron for Stronger Bones 180 TabletsThis scientifically balanced mineral complex puts chelated calcium and magnesium together with their ideal co workers of bamboo silica, Boron, vitamins D & K in a green superfood base of raw kale. Each of these elements, which are vital to bone development and maintenance, teeth and gums, muscles, and cardiovascular health, is more easily absorbed with our unique chilsonation process and whole food base.