Question: Which is in order from least potent to most potent? Looking for Course Help?
O Codeine, Morphine, Heroin, Fentanyl Morphine, Etorphine, Meperidine (Demerol), Methadone Codeine, Buprenorphine, Heroin, Tramadol O Hydrocodone (Vicodin), Codeine, Fentanyl, Oxycodone (OxyContin)