opiorphin
 n.— «Saliva from humans has yielded a natural painkiller up to six times more powerful than morphine, researchers say. The substance, dubbed opiorphin, may spawn a new generation of natural painkillers that relieve pain as well as morphine but without the addictive and psychological side effects of the traditional drug.» —“Natural-born painkiller found in human saliva” by Andy Coghlan New Scientist Nov. 13, 2006. (source: Double-Tongued Dictionary)

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