Codeine can be fixed up. My dear friend fixin just did it. He used 6 #3s, dissolved them in cold water for an hour, straigned thru bandana twice, and BOILED off 20cc of water (started with 30 cc). Sure, it's nowhere near smack, but the rush was remarkable, scary, itchy, heart racing, and threatened a headache but he didn't get one and DID get a good high after a bit. The itchy head, itchy injection area went away after about 5 mins. Was a hell of a rush. Real shooters want a rush, period. This one had a decent high too but it took him about 10mins to get it. Since he does like 8 10/325 hydros a time, it was a surprising small dose for such a rush and high. I wouldn't recommend it, seemed pretty gnarly, but if one did, I'd say about half what one would usually do orally. Fixin found that the head itch/explosion was so rad, he stood up to slow it down and it seemed to help. He's done it before a couple times, says it's better than nothing if he needs a fix, but it IS gnarly, even for him. He says the secret is to be real patient and dissolve the tabs really well, and filter them really well, use a 10cc syringe and pump it in ever so slowly. But it's for real experienced hardcore hardup shooters! Scary, crazy, but he's done worse. So, NOT recommended, but doable, works even when boiled! but real gnarly side effects.