Magnesium carbonate is a white, solid mineral that occurs naturally in various forms, including as a component of certain rocks and minerals. It is commonly used in various applications, such as in the production of magnesium oxide, as a drying agent, and in the food industry as an anti-caking agent. In addition to its industrial uses, magnesium carbonate is also found in some dietary supplements. It can help provide magnesium, an essential mineral that supports numerous bodily functions, including muscle and nerve function, blood sugar control, and bone health.