Eficramp is specific for cramps. Cramps: This is a sudden and involuntary muscle contraction, eg during a sporting activity or during sleep. Excessive sports activity, pregnancy, lack of balanced diet, age. Many factors could be the cause of cramps. In any case, it is important to give the body the necessary minerals. Uncontrollable cramps, day or night or as a result of some physical exercise. The magnesium in Eficramp contributes to electrolyte balance and the normal functioning of the nervous and muscular systems. This product is not a medicine, but a mineral-based dietary supplement.