Although the actual mechanism of motion of codeine remains to be unidentified, it is generally considered mediated throughout the agonism of opioid receptors, specifically the mu-opioid receptors.4 Morphine was Formerly postulated to add into the analgesic effect of codeine a result of the O-demethylation of codeine to morphine by CYP2D6. https://codeine-allergy48381.vblogetin.com/32752898/a-review-of-whats-codeine