Nature's Sea Calcium Nature’s Sea Calcium [Structural] is derived from Lithothamnium, a hard, brittle red algae that grows off the southwestern coast of Ireland. In these pure, mineral-rich waters, Lithothamnium congregates to form large beds of stone-like algae. The seaweed’s mineralized matrices naturally contain high concentrations of naturally occurring, plant-sourced calcium along with up to 70 other minerals, including magnesium, boron, copper and zinc. Lithothamnium provides a renewable source as the plant is left undisturbed. Nature’s Sea Calcium naturally promotes bone health and density. And its high buffering capacity makes it ideal for supporting and maintaining normal range pH levels. Nature’s Sea Calcium has a large surface area and a porous structure, which may increase its bioavailability. This formula contains a proprietary blend of short-chain fructo-oligosaccharides, which, when converted to short-chain fatty acids by beneficial flora in the body, have been shown to improve calcium absorption. Available in both powder and capsules. Take 1 capsule with a meal three to four times daily. Provides 100 mg calcium per capsule Powder: Mix two level scoops in 8 oz. water or juice, stir and drink. Provides 325 mg calcium per serving.