If approved, I feel this would be a good starting point; and people's experiences can be compared to this chart.
And one last thing, for MY OWN suggestion(s). Perhaps a column could be added, such as one called: +/- where, our experiences, would be reflected in this plus/minus scenario.
So an example would be like (oh, and I believe that Oxycodone should be the universal comparison analgesic):
1. First I would post the universal choice (OX) and the analgesic choice for comparison.
Analgesic Duration Half-Life Route Equianalgesic +/-
Oxycodone 4–6 hr NA PO 15-30 mg (20 mg)
Oxymorphone 3–6 h NA IM 1 mg
PR 10 mg
2. Second, enter the doses used, IE: 6mg of Opana IV
3. Third, to find the equivalent to the universal choice (Ox), one would apply this equation:
[Analgesic Dose(mg) / Equianalgesic(mg)] x Equianalgesic Universal (Ox)(mg) = Equianalgesic Universal Comparison(mg)
[(6mg Opana IM) / (1mg Opana IM)] x (20mg Oxy PO) = 120mg Oxycodone PO
4. Fourth, and probably last, one should know their universal euphoria (as the universal choice should be one that everyone, most likely, has been exposed or experienced with). And if it was about 50% expected outcome, their post would look similar to this:
Person 'A':
Analgesic(mg) Duration Half-Life Route Equianalgesic(Oxy) +/-
Oxymorphone IR (6mg) 4-6 hr NA IM 120mg (Oxy) -50
Person 'B':
Analgesic(mg) Duration Half-Life Route Equianalgesic(Oxy) +/-
Oxymorphone IR (6mg) 4-6 hr NA IM 120mg (Oxy) -25
*Obviously a consensus can't be taken with only two people's experience, however, one would get the point in seeing that Oxymorphone (Opana) IR isn't as strong as the Narcotic Conversion(s) would imply.
Futhermore AND MUCH MORE IMPORTANT, this would pose as a great HARM REDUCER, in which if that was +50, and +25, one would know where he/she lies in terms of potential OD and could start much lower than needed.
Drug Duration Half-life Route Equianalgesic Dosage
Codeine 4–6 h 3 h IM 120 mg
PO 200 mg
Fentanyl 1–2 h 1.5–6 h IM 0.1 mg
Hydrocodone 4–8 h 3.3–4.5 h PO 30 mg
Dilaudid 4–5 h 2–3 h IM 1.3–1.5 mg
PO 7.5 mg
Levorphanol 6–8 h 12–16 h IM 2 mg
PO 4 mg
Meperidine 2–4 h 3–4 h IM 75 mg
PO 300 mg
Methadone 4–6 h 15–30 h IM 10 mg
PO 10–20 mg
Morphine 3–7 h 1.5–2 h IM 10 mg
PO 30–60 mg
Oxycodone 4–6 h NA PO 15-30 mg (20 mg)
Oxymorphone 3–6 h NA IM 1 mg
PO 10 mg
Propoxyphene 4–6 h 6–12 h PO 130-200 mg *
REALLY, one last thing:
We, as the community could also do this with the 'DURATION' and use our own data to compile accurate information. Hey who knows, if this topic blows up, perhaps a 'researcher' could use this data, as I think it could be more conclusive vs. the Drug Companies test trials. As the candidates here would probably be more suitable for these numbers as 'addicts,' and/or 'junkies' have different tolerances and this could and certainly SHOULD play into effect when students are reading their books.
A brief example would be: A 'addict' goes to an ER who is fairly new 'addict,' however, still is hovering around a 90-120mg/day habit of Oxycodone. They are rushed to the hospital with shattered Vertebrae. Now the Physician determines, via drug test, that they have abnormal levels (much higher than a typical person with a similar injury). So the doctor decides to use Dilauded to treat the patients pain. But here on this chart a dose would range from about, probably, 2-4mg (which probably wouldn't do much for the pain, due to his tolerance). So a little quick math (as the Physician would have learned in school) that:
(Oxy Tolerance / Oxy Equianalgesic) x (Equianalgesic Choice of MD) = Approx. Dose for proper pain relief
(120mg Oxy / 20mg Oxy) x (2mg Hydromorphone) = 12mg Hydromorphone
Of course there is the unknown factor everywhere, but the Dr. could play it save and administer 6-8mg.
Thank you for taking the time to read and I hope this is understood.