Patient One MuscleCare supplies three key electrolytes for maintaining healthy muscle contractile function, along with soothing botanical extracts of Valerian root, White willow bark and Passion flower to ease occasional muscle tension. This formula provides effective support to help reduce painful nighttime or excercise-related leg muscle cramps, minor muscle cramps associated with athletic activity, and overall muscle tension. NOTE: Looking for Physiologics MusclEase (90s)? Please note that this product has been discontinued, and that Patient One - MuscleCare (90s) has replaced it.