The same way you would inject any other dilaudid but but first you must crush the balls inside the capsules with a mortar & pestle, or some sort of pill crushing device, until it is in powder form, put in spoon or cooker, add water(but do not cook!! use cold-warm, not hot water, cold to lukewarm is perfect though), stir solution for a few minutes if that, dilly or hydromorph dissolves very fast in water, it is practically meant to be iv'd as far as pills go, filter until you have a clear, not cloudy solution with a micron filter or q-tip cotton rolled tightly, pull up the solution, find a vein, inject, and enjoy for that amazing 5 minute rush, 30 minute high, and then fiend like its crack and want to do more every hour! that is IV dilaudid/HM in a nutshell, fucking awesome rush/high, but short lived! very short lived! If I were you I wouldn't do it! its hella addicting, and you wont want to take the dilly any other way again, I can promise you! IV owns every other ROA with hydromorphone/dilaudid... just don't do it, but if you do its better you be safe and know what to do. Be careful.