Levonorgestrel
"I've had the Mirena for two years and it has not been that great to me. It was not always terrible. The first 6-8 months were awesome. Then I started to gain weight, developed moderately severe acne, and after a year I started having heavier periods than before. I didn't flow on a normal schedule either. I also had more intense cramping and mood swings. I'm finally going to the doctor, because the benefits no longer outweigh the side effects."