Natural Calm is the solution to both restoring a healthy magnesium level and balancing your calcium intake—the result of which is natural stress relief. Natural Calm is the best-selling magnesium supplement on the market for over nine years in a row according to health food supermarket scanner reports. It features a proprietary formula that provides a highly absorbable, water-soluble magnesium in ionic form (having molecular charge that allows the element to easily bond with water), so it is ready to go to work right away.