As a result, patients rotated on to extended release oxymorphone preparations from other opioids may very well need the Opana IR tablets, Numorphan ampoules or phials with hypodermic needles and/or a PCA pump, or immediate-release formulations of hydromorphone, dihydromorphine, high dose oxycodone, hydromorphinol, nicomorphine, diamorphine, or morphine for breakthrough pain incidents which are already in progress.