Magnesium is an essential part of our DNA. It plays a part in over 300 metabolic reactions that occur in the body, from maintaining nerve and muscle function to balancing glucose and insulin metabolism. It even contributes to balancing your heartbeat. Within the marine magnesium we use here at The Naked Pharmacy, the magnesium is made naturally by the algae from the sea, so it gives us confidence that we are all consuming the best magnesium that Nature has to offer. However, just to be on the safe side we also test every batch for safety, purity, strength and quality. It's in our nature and DNA to do this for every remedy we make.