Magnesium plays a role in more than 300 biochemical bodily processes and is one of the 7 essential macrominerals that the body needs in order to function optimally. It's therefore vital to ensure that your magnesium source is a good source. VITUS® MAGNESIUM is sustainably sourced from the pristine ocean waters of Ireland. This all-natural formula will support your nervous system’s rest response, provide muscle relaxation, assist with restful sleep and so much more.