"i got implanon on christmas eve 2012 and i&#039;m making an appointment to have it removed- it&#039;s now march 2014.  at first, i had periods for several weeks.  then, later i would spot here and there. i believe after a good 6 months being on it i haven&#039;t had a period, spotting, nothing.  so that part is fantastic. not pregnant. another plus. 

bad parts?
i have easily gained about 5-10 lbs and i can&#039;t seem to shed them no matter what i do.  about 2-3 months after implanon i developed seborrhoeic dermatitis around the crown of my hairline.  i&#039;ve tried everything and it will not go away (i.e.- cradle cap for adults basically). it&#039;s bad, like really bad. i&#039;ve read reviews/side effects and it&#039;s named as one.  ugh."