The oxycodone is just oxycodone. no er or ir. and as for the migraine meds the furicept is one of the last on the list of meds they can prescribe for it. I tried imitrix when I was 18. regular furicept when i was 13. they tried naprelan, napraxin, isocit, and so on and so fourth. the furicept is furicept with codeine. (it used to put me to sleep so i could ride out the pain asleep) now. it does absolutely nothing.. no relief no sleepy. nada. so migraines are mine to deal with as naturally as possible. but I am always on the cusp of full blown migraine. This beast called RSD. just when I think I am learning to deal. it spreads or the flare gets worse. fir almost a full week I am using 2 canes .and have been couch bound. sleeping in my bed (or laying) seems to just aggravate the beast. as for right now.(dinner) first and last meal of most of my days.(how am I still gaining weight???)