Dietary supplement with highly bioavailable magnesium in citrate form. This metal is necessary for the growth of bones and the proper functioning of the nervous system and muscles, especially those of the heart and lungs. Magnesium supplements contribute both to the prevention of the deficiency of the metal and to the strengthening of its stores in the body. Magnesium deficiency is widespread in the general population. The symptoms of this deficiency are varied, including muscle cramps, fatigue and many symptoms of premenstrual syndrome.