"my insurance co would not fill a rx for oxycontin until i have tried opana &amp; a couple of others i&#039;ve never heard of. i was in a near fatal auto accident younger, i need a knee &amp; hip replacement, breast cancer at end of 2013 &amp; have had terrible time with infections, causing more surgeries.  i lay in bed usually 16 hrs a day (including sleep) because i hurt all over &amp; even more w/ house or yard chores . i&#039;m allergic to morphine, codeine, delaudid, fentanyl, ct scan dye - i can take only demerol after surgery. at home the only med that i am not allergic to is oxycontin &amp; ultram. i am now trying opana, because of my insurance company.  i&#039;m supposed to take 1 -20mg 2x/day. i am very disappointed. what little relief in gave me was only for about 2 hrs."