I was prescribed 25 Oxycodone 5mg (no Acetaminophen!) and am wondering about rectal administration. The oxy is not actually strong enough or lasts long enough to combat my pain. I said that to my doctor and he said this is as good as it gets (yeah right! gimmie some opana!). From what i know rectal administration has a much faster onset and the effects last much longer. Any tips? Any duration times (not listed on Erowid)? Any information helps. Thank you.