Grapefruit Juice (GFJ)- I had toyed with the thought of making use of grapefruit juice for some time but have read combined reviews. Lately I go through that it does not inhibit CYP2D6 but rahter 3A4 and that is answerable for conversion of codeine into norcodeine. In idea by inhibiting 3A4 you allow additional codeine for 2D6 to develop into morph… Read More