Magnesium is the most abundantly used mineral in the human body, identified as essential in at least 300 enzyme reactions. That means that when magnesium intake is low, something will suffer. We need magnesium for healthy muscle function, healthy nerves, sugar management, sleep, bone health and more. Magnesium absorption varies greatly across different types of magnesium ie magnesium oxide is very poorly absorbed but is often used to make a product look much better than it is and too much will cause digestive upsets. Highly Absorbable Magnesium is exactly what the name says it is - we selected some of the most bioavailable forms of magnesium we could get, combined traditional magnesium sources and made it into a fast dissolving product that overcomes issues with some people absorbing one type of magnesium better than another and gets in to where it needs to go. We don't know of a better magnesium combination product anywhere.