i ask because i have to take 40mg oxycontin every 8 hour's, i was informed of the medication opana and i'm afraid the ingredient's will be different, i had reaction from avinza the morphine capsule. i want to try the opana. i also had reaction from methadone and doctor's took that away gave me oxycontin, anyone know if opana is more like oxycontin, if so i will try opana, please reply ?