what is magnesium oxide used to treat?
Magnesium Oxide (Mag-OxÂ®) Uses. Magnesium oxide (Mag-OxÂ®)supplements are used to treat low magnesium levels in the body. The body needs magnesium for normal functioning of nerves, muscles, and cells. Lack of magnesium after a liver transplant can lead to irritability, muscle weakness, irregular heartbeat, or seizures.