Morphine an hydrocodone comparisson. on a scale of from 1 (aspirin) to 10 (morphine . Codeine, morphine, hydrocodone, and hydromorphone used to prepare calibrators and controls . Early comparisons concluded that hydrocodone and morphine were equipotent for pain control in humans. . Morphine: (immediate release - Morphine HP, Statex, MOS, MS-IR, Morphitec; slow . . series are also currently available. . . Five mg of hydrocodone is equivalent to 30 mg of codeine when administered orally. 5-2 mg:... more