Magnesium Is An Essential Nutrient Necessary For The Optimal Functioning Of The Nervous System, Muscle Function, Strong Bones And Strong Teeth. Magnesium Citrate Is A Form Of Magnesium That Is Bound To A Citrate Molecule Which Makes It Much Easier To Be Absorbed By The Body. This Makes Magnesium Citrate A Preferred Variation Of Magnesium Supplementation Providing Higher Bioavailability.