>>6316214addiction (in my opinion) is heavily dependent on your personality and mindset. i have smoked cigarettes here and there, taken painkillers here and there, etc. since i was in my early teens, and never had a "craving". i occasionally take the opportunity to take a painkiller if it falls into my lap, but even then i have plenty of self control to ignore it if the opportunity isn't right (these days I probably wouldn't take them at all since i have kids now). so you need to judge for yourself whether you think you'd be prone to abusing them.
that said, it's also possible you won't even like them. some people take them and it makes them feel sick, or they can't take the itching etc.