The IntraUterine System or IUS is a hormonal contraceptive device that is placed in the uterus. An IUS has a hormone cylinder that releases a progestin called levonorgestrel. The only brand currently available is the T-frame LNG-20 IUS, marketed as Mirena Coil by Schering Health and Berlex Laboratories. The term IUS is used in the United Kingdom to distinguish the hormonal intrauterine contraceptive from copper-based IUDs. In the United States,...