Our most bio-available natural marine magnesium and calcium complex for better relaxation, sleep, recovery, nerve function and bone health. Aquamin® Calcium and Magnesium is a marine mineral complex that is backed by over 40 peer-reviewed scientific publications and is sourced directly from the seawater of the Irish and North Atlantic seabed around the Icelandic coast. A mineral complex like no other, that is 250% more effective than regular calcium9 and times more bio-available than regular magnesium.