Natural opium alkaloids Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! Codeine “Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual... Morphine Pages in category "Natural opium alkaloids" The following 2 pages are in this category, out of 2 total. C CodeineM Morphine Retrieved from "http://psychology.wikia.com/wiki/Category:Natural_opium_alkaloids"