KnowraCodeineLinked fromLinked fromThe 15 pages that link to Codeine, each with the reason it gives.All 15Broader topic 4Related 3Compared with 8Drug metabolismBroader topic: Its variable activation makes enzyme genetics clinically consequential.OpiumBroader topic: It is another naturally occurring opium alkaloid, with weaker analgesic effects than morphine.AntitussiveBroader topic: Its action on opioid receptors can reduce the brain’s cough response.Papaver somniferumBroader topic: It is another naturally occurring alkaloid in the plant’s latex.