Adrien Gagnon Magnesium is a mineral supplement important for the maintenance of good health. Magnesium helps to maintain proper muscle function, and aids in the development and maintenance of bones and teeth. It helps the body to metabolize carbohydrates, fats and proteins and helps in tissue formation. It is recommended for those with high blood pressure, osteoporosis, atherosclerosis, arteriosclerosis and muscle cramps and sprains.