CALCIUM BISGLYCINATE: Calcium is the main constituent of the skeleton structure and it is essential in the bone remodeling process. Calcium bisglycinate has a much higher bioavailability than calcium carbonate or calcium citrate. MAGNESIUM BISGLYCINATE: Magnesium assists the absorption of calcium and together they regulate the acid-alkaline balance of the organism. VITAMINS K2 and D3: Vitamin K2 and D3, being able to activate the osteocalcin protein, are essential for calcium absorption in bone tissues.