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Generic Opana ER

Generic versions of Opana ER (oxymorphone ER) do exist, but they are only available for the "old formulation" of Opana ER. A new formulation was approved in December 2011. However, patents prevent any generic Opana ER in the new formulation from being made until at least November 2023, when the first patent is set to expire.

Can I Buy Generic Opana ER?

Opana® ER (oxymorphone ER) is a prescription pain medication. It comes in special extended-release tablets that release oxymorphone slowly throughout the day. It is typically taken twice a day.
Opana ER is made by Pharmaceutical Manufacturing Research Services, Inc., for Endo Pharmaceuticals, Inc. At this time, all strengths of Opana ER are available in generic form, although there is one very important difference between the brand-name and the generic versions. 

Available Strengths

Currently, generic Opana ER is available in the following strengths (in the "old formulation," as described here):
  • Oxymorphone ER 5 mg
  • Oxymorphone ER 7.5 mg
  • Oxymorphone ER 10 mg
  • Oxymorphone ER 15 mg
  • Oxymorphone ER 20 mg
  • Oxymorphone ER 30 mg
  • Oxymorphone ER 40 mg.
Generic versions are made by manufacturers such as Actavis Elizabeth, LLC, and Global Pharmaceuticals. 

"Old" Versus "New" Formulation of Opana ER

In December 2011, a new version of Opana ER was approved. This new version is supposedly more resistant to crushing, making it less likely to be abused. A few other pain medications have been reformulated in a similar fashion and for the same reason. In general, people have resisted these changes and have reported that these new formulations may be more or less effective (and be more or less likely to cause side effects), compared to the older formulations.
The generic versions of the old Opana ER formulation should be equivalent to the old Opana ER formulation; these generics, however, are not equivalent to the new Opana ER formulation. This may be good news for people who are wondering if the old version is still available, or for those who do not want to try the new formulation.
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