Etonogestrel
"I love Implanon! I never have to worry with it and it's so worth the procedure. If anyone is considering this I would tell you don't even worry about getting it inserted, so painless. The only things I wish was better on this was the timing and knowing 100% about the period part. Sometimes I get mine, sometimes I don't and you never know for how many days. But I say hey, it's so worth it for everything else it does for me. Can't be perfect, and it does enough! Recommended!"