Potassium Asporotate by Solaray is a highly advanced Potassium supplement in a special herb base. Potassium is needed for regulating water balance, levels of acidity, blood pressure, and neuromuscular function. It is also required for protein and carbohydrate metabolism. Potassium and sodium work together in the body to maintain muscle tone, blood pressure, water balance, and other functions. Many researchers believe that part of the blood pressure problem caused by too much salt (which contains sodium) is made worse by too little dietary potassium.