Nature's Answer Marine Based Calcium-Magnesium 250/125mg Vegan Capsules For Bone & Muscle Health, is derived from red algae that naturally grows in cool, clean pristine Iceland Arctic waters. Magnesium is a vital mineral that plays a role in multiple processes in the human body, including muscle function, bone development, vision health and more. Harvested in the cool, clean and pristine waters off the coast of Iceland, Aquamin's Red Algae and Seawater Marine Calcium, Magnesium and Multi-Mineral complex supplies bio-active calcium, magnesium and 72 other trace minerals. Untouched by the industry, the warm waters of the gulfstream meet the cold clean waters of the arctic and the perfect conditions exist for red algae to build up. The Aquamin'1s unique matrix of trace minerals works synergistically to give a powerful boost to magnesium's bioactivity. Magnesium derived from a marine-derived multimineral product is bioavailable to a significantly greater degree. Using carefully-controlled extraction techniques, Nature's Answer capture the holistic balance® of each herb and the value is passed on to you, Nature's Answer customer. From plant to shelf™, you can be assured that the brand know exactly what's in the product in your hand, and Nature's Answer guarantee it is authentic, safe, effective, holistically balanced®, and of course Nature's Answer®.