Country Life Magnesium Glycinate 400mg Tablets is a mineral supplement expertly formulated in a highly absorbable form of magnesium salt. Magnesium is needed for more than 300 biochemical reactions in the body and it helps to relax muscles and nerve function. It also helps maintain regular heart health and a healthy immune system, as well as keep bones strong. The bones are also a reservoir that stores magnesium for the body. Approximately 60% of the magnesium in your body occurs in bone, while the rest is in muscles, soft tissues, and fluids, including blood. Magnesium glycinate helps to regulate the transport of calcium across cell membranes, playing a key role in bone creation. People with higher intakes of magnesium have a higher bone mineral density, which is important in reducing the risk of bone fractures. Getting more magnesium from foods or dietary supplements might help older women improve their bone mineral density. Because of its glycinate form, it is gentler and may improve sleep and relaxation without causing grogginess.