Opioid-induced toddler deaths have happened from breastfeeding by mothers who were being ultrarapid metabolizers having codeine postpartum. Conversely, weak metabolizers may experience bad pain relief when treated with codeine. The presence from the methyl group around the quantity 3 carbon limitations the first-pass presystemic metabolism of codeine within the liver. https://directoryfrenzy.com/listings13116931/top-latest-five-codeine-schedules-urban-news