Mhelcl... your list is fine, but Methadone should be somewhere after Oxymorphone , but before Fentanyl!! but actually, this list in inaccurate, everyone has a different reaction as to how pain medication works on them! Some people feel that vicodin works better for them and their pain than Oxycodone or even Oxymorphone! It is really hard to list the strongest to the weakest or vice versa because everyone is different in the way that the medications effect them!!
Believe me... I know!! I have been on every pain killer known to man! and because of that, I am now a recovering addict on the methadone program because of the doctors out there who don't care what they give to people or how much that they give to them and then once the get you hooked on the meds they cut you off without offering treatment!