Opana ER, an extended-release form of oxymorphone, is available as tablets in strengths of 5 mg, 7½ mg, 10 mg, 15 mg, 20 mg, 30
mg, and 40
mg. Some resources assert that 2, 12 and/or 15
mg IR tablets and 25, 36 and
50 mg extended release tablets will be introduced although apparently the timeline on that is not known to the public at this time. Opana Extended-Release tablets are based on the TIMERx system developed by a consortium led by Endo and Penwest.