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The journal entry cited by the NewScientist article is:
Proceedings of the National Academy of Sciences (vol 103, p 17979).
It would be great if anyone can access it and use the more precise information it contains to expand the article. I'm hesitant on drawing too much from the layman's articles. Tyro 05:46, 14 November 2006 (UTC)
The article actually says it's up to six times more powerful an analgesic than Morphine is, not three (though the 1:3/g Opiorphin to Morphine would suggest it's around three times more powerful). Schizmatic 12:37, 14 November 2006 (UTC)
Something is also a bit fishy about the article here. The text indicates that it is an enkephalinase inhibitor or something of that sort. Such have been tried in the past, IIRC, and shown not to be tolerable, as they universally ended up affecting lots of other substances as well. Zuiram 17:11, 29 March 2007 (UTC)