Etonogestrel
"I've had this in since Nov 2012 I'm giving it a 7 because I'm not pregnant which is what it's supposed to do. However, I've hardly lost any baby weight (I exercise and watch what I eat) I also get my period at least twice a month and it's heavier than it ever was before. Seriously considering getting it taken out strictly because of the weight issues. I'm in the Navy and will probably never meet my weight requirement with it in."