Sustenium Magnesium & Potassium is a food supplement of mineral salts: Magnesium, Potassium and Vitamin C. It’s good and fresh to taste because of its pleasant effervescence and orange-flavored. INDICATIONS FOR USE: Sustenium Magnesium & Potassium is a supplement o f magnesium and potassium enriched with vitamin C. Magnesium contributes to a reduction of tiredness and fatigue, to normal energy-yielding metabolism and to electrochemical balance. Potassium contributes to normal muscle function. Vitamin C contributes to a reduction of tiredness and fatigue, to normal energy-yielding metabolism and to the protection of cells from oxidative stress.