Pure Herbs herbal extracts contain herbs historically used to support the Urinary System, made up of the kidneys, ureters, bladder and urethra, removes wastes from the blood and body in the form of urine. The Urinary System is the system of production, storage and elimination of urine. It removes wastes from the blood and helps to maintain water and electrolyte balance; it keeps the internal environment of the body clean. The whole system includes the kidneys which form urine and control its concentration; the ureters which connect the kidneys to the bladder; the bladder which stores the urine before it is eliminated from the body; the urethra which is a tube that connects the bladder to the external genitalia for elimination from the body; and the sphincter muscles which control the elimination of urine from the body.