"i&#039;ve been on oxymorphone for 10 years. my dr. just put me on opana 40mg instead, it&#039;s been 3 days and i&#039;m going through withdrawals. i have gastropathy which slows down your digestive system. seems my pain dr. doesn&#039;t care. i had the test a couple years ago that checks to see if your on the right medications. it showed that the oxymophone and roxicodone was being processed and was the right medication for me. a couple of months ago they wanted to put me on morphine patch. and i said no i think that he is being paid to write opana scripts all of a sudden. which to me is bs!  i hate the gel opana doesn&#039;t digest properly.  my insurance prefer generic cause it&#039;s cheaper i prefer cause it took care of my pain, whereas opana doesn&#039;t"