Potassium is an essential mineral that contributes to maintenance of normal blood pressure, muscle function and the nervous system. Food sources include bananas, vegetables, nuts and seeds. Easy absorption food supplement Contributes to the maintenance of normal blood pressure and muscle function Potassium is an essential mineral that contributes to maintenance of normal blood pressure, muscle function and the nervous system. Food sources include bananas, vegetables, nuts and seeds. Easy absorption food supplement Contributes to the maintenance of normal blood pressure and muscle function