Codeine binds to mu-opioid receptors, which can be associated with the transmission of pain all over the overall body and central nervous program , . The analgesic properties of codeine are believed to arise from its conversion to Morphine, although the correct mechanism of analgesic motion is mysterious presently , https://bookmarkbirth.com/story20892492/new-step-by-step-map-for-pain-medicine-in-sweden