Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Relative Potency of Opioids ====== ^ANALGESIC^POTENCY RELATIVE TO MORPHINE^DURATION OF ACTION (HOURS)^ |Codeine Dihydrocodeine|1/10|3-6| |Pethidine|1/8|2-4| |Tapentadol|1/3|4-6| |Hydrocodone|2/3|4-8| |Oxycodone|1.5|3-4| |Methadone|5-10d|8-12| |Hydromorphone|4-5|4-5| |Buprenorphine (SL)|80|6-8| |Buprenorphine(TD)|100|Formulation dependent (72-168)| |Fentanyl (TD)|100|72| [[https://www.ncbi.nlm.nih.gov/books/NBK537482/table/appannex6.tab2/|From WHO Guidelines for the Pharmacological and Radiotherapeutic Management of Cancer Pain in Adults and Adolescents. Table A6.2]]