Potassium works with sodium to help regulate fluid balance within the body, support the cardiovascular system and muscular system.^◆ It is necessary for normal growth, to support nerve impulses for healthy neuromuscular function and to preserve alkalinity of body fluids. It also assists in the conversion of glucose to glycogen, cell metabolism, enzyme reactions and synthesis of muscle protein from amino acids in the blood. It unites with phosphorus to send oxygen to the brain.