Power of Nature Magnesium 300 mg is a dietary supplement containing magnesium and vitamin B6, which contribute to the normal functioning of metabolic processes aimed at energy production. Magnesium contributes to the reduction of tiredness and fatigue, electrolyte balance, normal muscle function, nervous system function and normal psychological function. Vitamin B6 contributes to the normal metabolism of proteins and glycogen, as well as the regulation of hormonal activity.