Promotes healthy bones with 1,300mg plant source calcium per serving. * Calcium is derived from calcified red algae seaweed, sustainably harvested in Icelandic waters. Vitamin D3 enhances calcium absorption and utilization, magnesium helps maintain bone density, and vitamin K2 directs calcium to the bones where its needed most. * Adequate calcium intake throughout life, as part of a well-balanced diet and regular exercise, may reduce the risk of osteoporosis.