My mom's been on it 12 yrs now-she's had no side effects at all&thinks its really great. What I have heard though is that whatever side effects u do have will remain 4 upto 3 months after u come off it.In other words,if u come off it cos it made u feel sick,u wont stop feelin sick 4 about 3months.Saying this though,different people willl react differently to it. Like the pill,many people dont have periods on it. Also,it can take up to 1 yr for ur fertility 2 return to normal level when u come off it so it aint gr8 if ur planning a baby.
hope this has helped
liz x