Morphine dose vs other opioids? Does anyone know the conversions for 1mg morphine for the following opioids?

Question

IV and oral

- fentayl

- pethidine

- oxycodone

- codene

- tramadol (I know its not really an opioid)

.........I used to have a table on this that was great, but I lost it, so if anyone knows if there is such a table online, or knows the doses I would really appreciate it!

Answer 1

Hi Peter,

Try the link I have provided in the sources.  It has a handy converter as well as a chart below it.

Good luck, and I hope this is what you were looking for.

--Zach

Answer 2

read the author's disclaimer on that site above, but it says that with a 50% reduction for incomplete cross-tolerance from morphine (are you talking about morphine or hydromorphone??) for fentanyl = .01mg fentanyl, and that's with the patch or the IV.

Fentanyl is way strong, duh, so is morphine/hydro, but that Duragesic brand had a recall of some 22million and a class-action suit is brought against it b/c some dopes were sucking the "juice" out of the patch and dying.  Even if the patch was 3-days old and not folded up correctly, kids were taking them and doing the same, and b/c that patch is time-released at two potencies, one being a mere .25 micro, not mili-, but micrograms per hour, it's an effective potent pain reliever.  I used it for one month and had no withdrawals but it did make my breathing shallow, and seriously, do NOT mix it with Lyrica (pfizer) , for fibromyalgia- it gave me bad hallucinations and I spent almost 2 days in the ER.  Sucked.  

But, yeah, that website will work, just make sure you try 50 and 75% cross-tolerances since all are different, and as for Ultram/tramadol, why ask- it's only indicated for minor to moderate pain relief...just wondering.

Answer 3

These kind of ocnversions are not really made available to the general public for obvious reasons.  Try the Mim's website.  http://www.mims.com.au/