"i&#039;ve had implanon for 6 years and never really had a problem with it. i just got it taken out feb 2016 and replace with nexplanon, since they don&#039;t have implanon anymore. we&#039;ll see if they are the same..i&#039;ve never gained unexpected weight on it so that&#039;s good for me. obviously some people have bad effects, but i honestly had nothing majorly wrong with it. sometimes my periods would be gone for 3 months and only had a period for 3 weeks twice, but that was close to expiration."