KnowraMorphineLinked fromLinked fromThe 23 pages that link to Morphine, each with the reason it gives.All 23Broader topic 9Related 4Narrower topic 1Compared with 9CodeineRelated: Morphine is both a codeine metabolite and a point of comparison for its effects.HeroinRelated: Heroin is produced by chemically modifying this opioid.Active metaboliteRelated: Morphine is formed from codeine and contributes to codeine’s analgesic effect.ApomorphineRelated: Apomorphine was chemically derived from morphine, although it does not act as an opioid analgesic.