About the YouTube video, I linked, I did not embed the video as it could be a sort of copyright infringement. Unless, of course, the video is a creative common video which in this case it is not. So to be on the safe side I usually link my YouTube video rather than embed it. For more on YouTube's copyright please read here.

I guess the method of gradual withdrawal from one substance by adding a less "evil" type may work. The keyword there is that it is regulated dosage. Morphine is addictive but in regulated doses can help alleviate the sufferings of someone in pain.