The chemical reactions and pathways involving codeine, an alkaloid found in the opium poppy, Papaver somniferum var. album. Codeine has analgesic, anti-tussive and anti-diarrhoeal properties.
F-9775A metabolic process +
F-9775B metabolic process +
isoquinoline alkaloid biosynthetic process +
isoquinoline alkaloid catabolic process +
morphine metabolic process +
organic heteropentacyclic compound biosynthetic process +
organic heteropentacyclic compound catabolic process +