OPIUM ALKALOIDS By N., Sam M.S. - 53 alkaloids stemming from opium, of which there are over twenty. The main alkaloid is morphine- others consist of codeine, thebaine, and papaverine. OPIUM ALKALOIDS: "Papaverine is rarely used, but is an opium alkaloid." Related Psychology Terms OPIATES THEBAINE OPIUM CLINICAL PSYCHOLOGY DRUG ADDICTION MORPHINE MANIC-DEPRESSIVE REACTION (CIRCULAR AND MIXED TYPES) ANTISOCIAL REACTION EPILEPSY (Symptoms and Types) LEGAL PSYCHIATRY (Forensic Psychiatry) Cite this page: N., Sam M.S., "OPIUM ALKALOIDS," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/opium-alkaloids/ (accessed July 3, 2022).