Calcitriol + Calcium Citrate Malate + Vitamin K2-7 is a combination of three medicines: Calcitriol, Calcium Citrate Malate, and Vitamin K2-7. Calcitriol is the active form of Vitamin D. It raises Vitamin D levels in your blood. This in turn raises calcium levels in your blood by helping you absorb more calcium from your intestine. Calcium citrate malate is a water-soluble calcium supplement. It increases the plasma calcium levels, and is used when the amount of calcium taken in the diet is not enough. Vitamin K2-7 plays a central role in the metabolism of calcium, the main mineral found in your bones and teeth. Vitamin K2-7 activates the calcium-binding actions of two proteins: matrix GLA protein and osteocalcin, which help to build and maintain bone health.