Mirena can cause common side effects like abdominal pain, vaginal discharge, and headaches, which usually subside within a few weeks. Serious side effects of Mirena include perforation or expulsion of ...

How Does Mirena Work for Birth Control? Mirena is a small, flexible plastic, T-shaped system that slowly releases small amounts of a progestin hormone (levonorgestrel) into your uterus. It is the same ...