Serotonin syndrome: Instances of serotonin syndrome, a potentially lifestyle-threatening condition, have been reported through concomitant utilization of opioids with serotonergic drugs. Codeine causes a discount in motility connected with a rise in clean muscle tone in the antrum of the stomach and duodenum. Digestion of food inside the small intestine https://large-directory.com/listings13176592/promethazine-with-codeine-doses-for-adults-an-overview