"i have had the implanon for almost a year now. i have heard that there is always a lot of weight gain but i didn&#039;t mind that because i had a lot of trouble keeping weight on for a long time. all in all this is the most emotionally stable i&#039;ve felt out of all the birth control methods i&#039;ve tried, and it hasn&#039;t had much effect on my sex drive,  but i&#039;m not super active anyway so i don&#039;t see any difference as i&#039;m sure i would if i were in a long term relationship.  i originally got it because i have a rare medical condition that causes metabolic episodes when i have my period that had put me in the hospital on numerous occasions plus i had just started to become sexually active.  i am very satisfied!"