if you take methadone how long after stopping before any other kind of opiate will work? i've been off methadone for about a week and i found a perc 10 last night and took it. i know i should not have done that but im an addict and i could not help myself. i thought methadone made it so no other opiates would work but i swear i think i felt better after i took it. was it all in my head or did it really help?