Additiva magnesium eff tablets 150Mg – in addition to the food that builds our muscles, we also need minerals for their normal functioning. Magnesium is one of the most important minerals needed to generate energy and for the normal functioning of our muscles and nervous system. If we use up a lot of our magnesium, especially if we are into physical activities, we feel exhaustion and fatigue. A daily dose of magnesium is an important part of our diet needed for our muscles, nerves, and overall health.