This supplement is a very good source of Magnesium and Zinc your body needs daily to help maintain good health.  Adequate magnesium intake is used to support contraction and relaxation of muscles,  help avoid leg cramps and maintain proper muscle function.   According to the National Institute of Health, magnesium intake by most American adults is lower than recommended.  It also helps bone health and nervous system function, and is beneficial for healthy immune system and cell growth. Together, this Magnesium and Zinc combo offer a quality supplement that cam help ensure adequate levels of these two important nutrients.