Many Americans do not get enough magnesium from their diet because this important mineral isn’t present in many foods. Yet it's vital for muscles, bones, heart health and nervous system function. In fact, magnesium is needed for more than 300 different bodily processes. Three Types of Magnesium for Complete Daily Dose Our Triple Magnesium Advantage provides three different forms of magnesium. Both aspartate and citrate are considered to be among the most absorbable forms of magnesium while magnesium lactate is prized for its ability to support the digestive system and muscular movement in general.