http://www.prohealth.com/fibromyalgia/library/showArticle.cfm?libid=18811&site=articles
It can be taken for quite a few things http://en.wikipedia.org/wiki/Duloxetine
If you or someone you know is taking it, or considering taking it, it would probably be a good idea to give that article a read. Withdrawal symptoms are apparently Extremely Severe.