Magnesium, silicon, and copper supplement. Magnesium contributes to reducing fatigue and supporting the normal functioning of the nervous system. Vitasil Magnesil is a supplement that combines several essential elements for health: magnesium, silicon, copper, manganese, and zinc. Magnesil's key feature is that it contains an organic transporter, which allows for rapid absorption of these minerals at the cellular level. Directions for use: Take 2 x 15 ml/day, preferably with a meal. Shake before use. Recommended daily dose: 30 ml.