The mineral magnesium is indispensable for vital muscles. Only when sufficient magnesium is available, the balance between tension and relaxation of the muscle is given. In this respect, even a slight magnesium deficiency can lead to disturbances of the muscular activity, which manifests itself among other things in muscle and leg cramps. The simple way of treatment: Biolectra Magnesium 243 mg forte effervescent tablets (over-the-counter at the pharmacy). The magnesium preparation triggers calf cramps and relaxes the muscles.