Common analgesic drugs ak codenie tramadol Narcotic analgesics short half-life: morphine, pethidine, hydrocodone tro long half-life: methadone, levorphanol Non-narcotic analgesics: NSAIDs, antidepressants, antispam, antiepileptic, steroids benzodiazepine, psychotropic, bisphoshonates anticonvulsants, phenothiazine, local analgesicsCommon analgesic drugs weak: codenie, tramadol Narcotic analgesics short half-life: morphine, pethidine, hydrocodone strong long half-life: methadone, levorphanol Non-narcotic analgesics: NSAIDs, antidepressants, antispam, antiepileptic, steroids, benzodiazepine, psychotropic, bisphoshonates, anticonvulsants, phenothiazine, local analgesics