Most people get enough calcium but run low on magnesium, which is exactly what Bluebonnet's Chelated Magnesium addresses — a standalone, buffered form that won't upset digestion the way magnesium oxide can. Magnesium plays a role in muscle relaxation, sleep, nerve signaling, and hundreds of other processes, making it one of the more commonly under-supplemented minerals. A solid pick on its own, or alongside a calcium product that doesn't already include it.