Grapefruit Juice (GFJ)- I had toyed with the concept of working with grapefruit juice for some time but have go through blended reports. Recently I go through that it isn't going to inhibit CYP2D6 but rahter 3A4 that's responsible for conversion of codeine into norcodeine. In theory by inhibiting 3A4 https://codeine99876.activablog.com/34275657/new-step-by-step-map-for-codeine