Designed to offer bone health support, Algae-Sourced Calcium provides high levels of key ingredients that support or contribute to the maintenance of normal bones - calcium, magnesium, boron and vitamin D. The algae that is used to derive the calcium is known as Algas Calcareas and studies have found that algae-derived calcium is a more 'bone-friendly' form of calcium as it is easily absorbed by the body and better tolerated than other calcium forms. As it is derived from the sea it naturally contains full spectrum support with a wide range of trace minerals that help support normal bones.