theres lots of potentiation to be had for most opiates but it seems the hardest one to actually potentiate is codeine, dxm reduces it's effects, it's looking like grapefruit juice reduces them as well, I take tums but that does nothing but create a more base enviroment in which to metabolize, I know the basic one beer, but what else potentiates codeine, and don't tell me to look up the opiate potentiation guide, this is about Codeine most of those techiniques do NOT work on codeine in fact they do the opposite which is inhibit the amount of morphine it is metabolized into, some say grapefruit inhibits 34a not 2d6 and therfore does potentiate but I have not found that to be the case, so what are some easy to obtain otc cyp2d6 INDUCERS? or other methods that potentiate CODEINE most opiate potentiating methods do not work for it.