Oxycontin and Oxycodone (both the same drug) are extremely addictive, Oxycodone being among the most addictive of the synthetic opiod codeine. I've experimented and gone for a good bit strung out on both. They make you extremely sick, if you've ever heard the term "dope sick" or someone talk about getting the flu after coming off O.Cs then that's what they're talking about. I would take them on a VERY as needed basis. I'm not trying to scare you but Oxycontin is exactly like heroin, and 40 mg is a really high dose, one would make me puke if I did it right now, then again you're taking them orally and they're suspended release. They shouldn't make you sick when you do them, but I would have that doc checked out if he told you continually take them for 9 months, that's not safe at all. Like I said take them on a VERY as needed basis because I know what it feels like and I've seen others become real bad off getting sick off those things.