Purdue looked at it, said thanks but no thanks. Now, Billions and Billions later they look back and have a good laugh that they even thought about it. Kind of comical when one thinks about it . LOL LOL
Gastric stomach acid does not work. Easier for Junkie to buy industrial Muriatic acid and go negative pH. Some Junkies have tried Car Battery Sulphuric. $ELTP's Same Eudragit polymer family for agonist ER and antagonist have necessary differences to function as well as resistance to ALL pHs in body fluids.
It's clear Purdue tried to develop their own agonist/antogonist and failed as far back as 2001. LOL LOL!! I find it hilarious that it took Elite to find a stable approach to combining Oxycodone with Naltrexone.
Purdue officials said they planned to submit any new painkiller that includes naltrexone to the Food and Drug Administration for approval. The agency has an expedited process of six to ten months under which a manufacturer can seek permission for changes to approved drugs without extensive clinical trials.