I've seen a couple of people ask about comparison of one opioid against another and came up with a sample list. I didn't want to lose it and wanted it shared so hopefully this will be a good place as a repository. If there are any mistakes or additions please feel free to add.
This is just a quick comparison so no quoting, as it is only single sourced. Also amounts shown are only for comparison in relation to each other.
|Opioid||Strength (Codeine)||Equivalent Dose (30 mg codeine)||Strength (Morphine)||Equivalent Dose (10 mg morphine mg)|
|Aspirin||1/36||1080 mg||1/360||3600 mg|
|Difusinal||1/16||480 mg||1/160||1600 mg|
|Dextropropoxyphene||1/4||120 mg||1/40||400 mg|
|Codeine||1||30 mg||1/10||100 mg|
|Tramadol||1||30 mg||1/10||100 mg|
|Anileridine||2.5||12 mg||1/4||40 mg|
|Demerol||3.6||8.3 mg||.36||27.8 mg|
|Hydrocodone||6||5 mg||.6||16.67 mg|
|Morphine||10||3 mg||1||10 mg|
|Oxycodone||15-20||1.5-2 mg||1.5-2||4.5-6 mg|
|Morphine IV/IM||40||.75 mg||4||2.5 mg|
|Hydromorphone||50||.6 mg||5||2 mg|
|Oxymorphone||70||0.4 mg||7||1.4 mg|
|Levorphanol||80||0.26 mg||8||.8 mg|
|Buprenorphine||400||0.075 mg||40||.25 mg|
|Fentanyl||500-1000||0.03-0.06 mg||50-100||0.1-0.2 mg|
|Carfentanyl***||1,000,000||30 pcg||100,000||100 pcg|
***Used only in sedating large animals.