KnowraCodeineLinked fromLinked fromThe 15 pages that link to Codeine, each with the reason it gives.All 15Broader topic 4Related 3Compared with 8CYP2D6Related: CYP2D6 activity affects how much morphine codeine can produce.Active metaboliteRelated: Its conversion to morphine illustrates how an active metabolite can mediate a parent drug’s effects.ThebaineRelated: Both compounds occur in opium, but thebaine is more chemically reactive and convulsant.