MENACAL.7 TABLETS is a calcium supplement with bone-fortifying nutrients vitamin K2 and vitamin D3 . Menacal.7 contains the secret ingredient for optimal bone health ? Vitamin K2 (MK-7). Without Vitamin K2 (MK-7), calcium and vitamin D3 cannot function properly or effectively. This formulation works synergistically to ensure an optimal intake of the 3 key ingredients for the development and maintenance of strong healthy bones and teeth.