Please be patient with me...blush...newbie. I took 2.5 mg of oxycodone for severe pain and was immediately and intensely euphoric for a few seconds at which point I began 'nodding' into oblivion. I mentioned this to the prescribing doctor and he said that I was 'opiate naive' and hyper-sensitive to the drug. Fine and dandy but are hyper-sensitive and opiate naive the same thing? By the way this is the only drug I have ever taken in which I wanted more even although I hated the experience. Gave them all back...sigh...no pain relief from them either...smile...good muscle relaxant though. So back to my question...is opiate naive the same thing as being hyper-sensitive to the med.? Thank you.