To the OP, the oxycodone will have a somewhat different feel than the codeine, but since you were dependent (addicted?) to codeine you were/are already opiate-dependent. You see, with opiates (natural/semi-synthetic), if someone is addicted to one opiate, another can be easily substitued, as mentioned above. In almost all cases an addict with an addiction to one opiate will not pass up another one. Opiate addiction is fairly straightforward in this regard when it comes to opiates that are natural or semi-synthetic w/o odd properties, these natural/semi-synthetic opiates include morphine, heroin, codeine, oxycodone, hydrocodone, hydromorphone, oxymorphone, and others. If you are not "feeling" the OxyContin (oxycodone ER), it is fairly safe to increase a bit in your daily dose until you get to a place where you feel comfortable. You have the 10 mg strength, so you can adjust the dose carefully. But, let me just say that high dosing with oxycodone (with tolerance, of course) is fairly easy provided you have enough $/steady supply. Dosing high with codeine (above what you are currently doing) becomes an issue because of the APAP (even w/ CWE), the caffeine, the CWE processes, and a ceiling dose area which you might hit. You would also need a much larger number of pills themselves to sustain a larger opiate addiction. And, if you start getting involved with oxycodone, you might find you much prefer it over the codeine, and this could lead to a heavier addiction, higher tolerance, and ultimately more unpleasant effects brought on by addiction. If you are going to play with opiates fine, just know that you are playing with fire, and how to reduce the risks of getting burned. I like opiates myself, and I don't judge about that, but I do believe being educated makes all the difference. I also have to agree with ErgicMergic in that it seems a little suspicious you got these 10 mg OxyContin (not a very common strength rx'd) so recently, after making a post about your mother's pain management with OxyContin 10 mg. I don't judge there, because it is not my place, but I will say opiates make life tolerable, even enjoyable for those who suffer from agonizing pain and would otherwise be bedridden and depressed/anxious. I have stolen a FEW Percocets and a FEW Lortabs out of medicine cabinets before, but they were not being used and the script was no longer needed for the patient. Of course, it is still theft, and the same in the eyes of the law, but there is a difference. Just be safe, and try to make sure you aren't mistreating others around you. I am not trying to preach, or maybe I am. Like I said be safe, educate yourself, the whole nine yards. There is always more to learn.