Swanson Extra Strength D3 & K2 is a dietary supplement containing vitamins D3 and K2. These vitamins are part of the fat-soluble vitamin group. Vitamin D is responsible for calcium and phosphate metabolism, as well as maintaining bone health. Vitamin K is associated with calcium balance in the body and is necessary for the synthesis of osteocalcin in osteoblasts. High content of vitamin D and vitamin K Combined formula for the proper use of calcium in the body Synergistic support for cardiovascular and skeletal health Contains the best absorbed forms of vitamins D and K Vitamin K2 (soy-free) delivered as MK-7 for improved bioavailability Dosage: Take 1 vegetable capsule daily with water and food.