Lifestream Natural Calcium (Sustainable Plant Source) PowderSupports bone and teeth structure Assists nerve and muscle function Vegan friendly Lifestream Natural Calcium is certified organic and sourced from sustainably harvested seaweed that is naturally rich in calcium and has a unique, porous, honeycomb like structure for optimal absorption. When taken as part of a healthy diet made up of a variety of foods, it provides a wide range of minerals that can aid in the absorption of calcium such as boron,