Magnesium is a mineral and electrolyte that is essential for life. It is used to treat migraine headaches, osterporosis (bone loss), diabetes, heart probles, PMS (premenstrual syndrome), kidney stones, constipation (trouble having bowel movements), asthma, and alcohol withdraw. Other names for Magnesium include: Magnesium (Mag or Mg) Citrate, Mag Gluconate, Mag Glycinate, Mag Oxide and Elemental Magnesium. Check with your doctor before using Magnesium.