Benefits and Features Magnesium citrate, a readily soluble form of magnesium that is able to cross the blood-brain barrier. Magnesium is an essential mineral needed for more than 300 biochemical reactions in the body. Detail Overview Adequate magnesium is needed to convert carbohydrates, protein, and fats to energy; maintain healthy blood vessels and strong bones; regulate calcium and potassium metabolism; help your muscles to contract and relax, and help your nerves send and receive messages from your brain throughout your body.† The glycinate form of magnesium is especially easy for your body to digest, absorb, and use.