Fig. 2: Codeine doses across CYP2D6 phenotypes.
From: Cytochrome P450-2D6 activity in people with codeine use disorder

PM poor metaboliser, IM intermediate metaboliser, NM normal metaboliser, UM ultrarapid metabolizer.
From: Cytochrome P450-2D6 activity in people with codeine use disorder

PM poor metaboliser, IM intermediate metaboliser, NM normal metaboliser, UM ultrarapid metabolizer.