I read your stories on Fentanyl and the contents of the Duragesic® patches. A relative of mine works for an in-home nursing care program where they administer strong drugs to the patients. When they die, the nurses confiscate these so they don't fall into the "wrong" hands. Needless to say, I have gotten my hands on some pretty heavy stuff over the years: 160 mg OxyContin®, morphine ampuls, and especially Duragesic®.
These patches come in various strengths that have a total Fentanyl content of between 2.5 mg (releasing 25 micro-grams per hour) and 10 mg (releasing 100 micro-grams per hour). In other words, huge amounts. I have cut any number of these open, and ran a q-tip inside to extract some of the fluid. After all the juice inside the patch was gone, I would cut the remaining empty patch into pieces and chew on it with delight.
After about 4 months of doing this with a case of 35 10 mg patches, I was admitted to the hospital with a liver problem. The solution inside Duragesic® caused my liver to nearly explode. My enzymes were over 10,000--unbelievably high. This was not the result of the Fentanyl; it was the result of the other stuff in the patches.
My advice is: don't mess with these patches. Use them as directed unless you are one seriously knowledgeable chemist and know how to extract the Fentanyl from the glycerine and the alcohol. Even then, who would be ballsy enough to test your first draft? Death row inmates?
That's just my two cents. Happy using!