Tropical vacations are something we might manage once a year, but what about the other 50 weeks? Vitamin D3 (cholecalciferol), is known as the “sunshine vitamin” because it is easily synthesized by the body when the sun’s UVB rays strike the skin. Vitamin D helps with the absorption of calcium and phosphorus to keep bones and teeth strong and protect against disease. Vitamin K2 is a fat soluble vitamin essential for normal blood clotting and bone metabolism.