I take opana ER every 8 hours and opana IR (oxymorphone) 6 times aday for break through pain I've taken to many of the IR for the month and don't have enough to get me through till my next visit I have some roxicodone from my old prescription my question is could I keep taking the opana ER as my primary medicine and replace the opana ir thats for break through pain with the roxicodone would they be safe to mix I've never heard of mixing opana and roxicodone
