There are two types of IUD contraceptives. Mirena and Paragard (Grimes, 2007). Mirena is the type of IUD that contains hormones. Its functionality depends on levonorgestrel, a hormone released from the IUD once inserted into the uterus. In other words, Mirena is a hormonal IUD which prevents pregnancies for the period it remains inserted into the uterus. The effectiveness of this IUD contraceptive can last for up to a period of five years, although this effectiveness is not a hundred percent guaranteed. However, Mirena is slightly more effective compared to copper IUD.