Etonogestrel
"I wouldn't recommend. I didn't get pregnant however it did throw my hormones off & I gained weight (25lbs) from having this product inside me for years. It frequently threw off my menstrual cycle causing my hormones to do the same & this usually extended my period. I had to take birth control pills along with Implanon due to the longer periods. I wish I would have just stuck with Regular Birth control pills but I was scared I wouldn't remember to take it due to my busy schedule however now I set a reminder on my cell phone that goes off everyday. I recommend you try this before putting the Implanon in your body also it was hell getting it out being that it moved around & more."