Magnesium is an essential mineral that plays a key role in many of the body's functions. It helps to maintain normal nerve and muscle function, supports a healthy immune system, keeps the heart beat steady, and helps bones remain strong. Magnesium supplements can be used to help support healthy levels of this important nutrient in the body, particularly in cases of deficiency. Some common forms of magnesium supplements include magnesium oxide, magnesium citrate, and magnesium glycinate. These supplements can be taken in the form of pills, tablets, or powders, and may be used to help support healthy blood pressure levels, improve sleep, and reduce the frequency of migraines. It is important to speak with a healthcare professional before starting any new supplement regimen.