Implanon
"I have been on Implanon for nearly two and a half years now.  I had been on the Depo before that for about five years.  My biggest concern was not getting my period because that was the whole reason I was originally put on birth control.  I essentially cannot function when I get my period and with the Implanon I have not gotten it once.  I gained a lot of weight on the Depo, but once on Implanon I lost 20lbs. Although I was exercising regularly as well.  The only negative side effect I've experienced is a lowered sex drive.  Other than that I love this birth control.  I think people just need to realize that different bodies respond differently to medications."