To safely inject the generic opana er 15mg...
For each pill you crush up, add 4-5ml of isopropyl alcohol, 91% or higher. Shake it up for about 4-5 minutes, then filter the solution with cotton soaked with isopropyl alcohol (91% +). What I do, when I do this, is spread the solution on a black circular plate. Then, wait for the alcohol to evaporate. You will be left with a crystalline kind of substance, best scraped up with a razor blade. Usually, the crystalline substance varies in color from off-white to orange, similar to orange juice. Mix the solution with sterile water, then filter it through a micron filter. You can add as much or as little water as you want, but depending on how many pills you did this with i recommend using at least 6ml. My friend believes this is the best way, that you absorb more of the OM than snorting the pill. I have a hard time telling the difference, and I just usually snort my 15s and inject the 10mg IRs.....If you don't have the time to wait for the alcohol to evaporate, you can put the solution into a ladle and heat it slowly, but I prefer to let it just evaporate over time. I hope this answers your question, feel free to PM me if you need to know more.