whenever i have taken codeine i would just take as much as i needed to get high, and as soon as my high started to come down, i would take more until i was high again. I would do this for long periods of time until i was out of codeine. i dont really get the complication with dosing at certain times. i never noticed a decrease in effect when i redosed because of some inhibited enzyme. i dont know, maybe my body is different, but codeine was just like any other drug to me, just like oxy, the more i took, the higher i got. didnt matter when i took it, or how often.
maybe im just different.