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NOW 20% OFF A Dietary Supplement with Vitamins A, D3, and K2 (as MK-7) About the ingredientsVitamin A is a fat-soluble vitamin with multiple functions in the body. It is required for normal development, growth and maintenance of the skeleton throughout life. Vitamin A supports the number and activity of osteoclast cells which break down bone tissue, an ongoing process of skeletal maintenance called bone remodeling.* Bone remodeling is a natural way the body removes old or weakened bone tissue in order to make room for new, stronger tissue.* This process is critical to fracture repair and retaining bone density. * Vitamin A also plays a role in stimulating osteoblasts (bone building cells) to secrete proteins that are required for bone mineralization, including the K2 dependent protein called osteocalcin. Combined, Vitamins A and D support osteocalcin output and the regulation of osteoclasts (bone breakdown cells) and osteoblasts (bone building cells). * Vitamin D3 (cholecalciferol) is