Published in Physician Business Week, January 16th, 2007
"Observational studies are conducted for longer, and many also support opioid analgesic efficacy. Concerns have arisen about loss of efficacy with prolonged use, possibly related to tolerance or opioid-induced hyperalgesia. Mechanisms of tolerance and opioid-induced hyperalgesia are explored. Evidence on...
Want to see the full article?
Welcome to NewsRx!
Learn more about a six-week, no-risk free trial of Physician Business Week
NewsRx also is available at LexisNexis, Gale, ProQuest, Factiva, Dialog, Thomson Reuters, NewsEdge, and Dow Jones.