methadone
What? How is 'done the same as morphine with less problems and addiction? Methadone has some pretty killer withdrawals attatched to it, plus once you're hooked, it isn't nearly as good, prompting the user to take more and more. Not to mention that 'done pretty much binds the opioid receptors all the way up, making switching to a less powerful opioid much less effective. But I agree that there doesn't need to be a methadone dose. Or crack. Or promethazine.