BiOptimizers Magnesium Breakthrough is a dietary supplement which is made for people who want to be stress free, get fit, get better sleep and get fast recovery. It gives a sense of calm, relaxation to the nervous system and soothes stress levels. It maintains normal muscle and nerve function, keeps a healthy immune system. Maintains normal heart rhythm, builds strong bones, and lowers cortisol levels. It is made with all natural ingredients and is highly effective. It has zero side effects.