Xanodyne Pharmaceuticals is a specialty pharmaceutical company that planned to raise $86.3 million in its initial public offering, but withdrew registration on October 27, 2008, citing "market conditions".BioSpace: Xanodyne Pharmaceuticals, Inc. Cancels IPO Due to "Market Conditions" (October 27, 2008)

On January 30, 2009, the FDA began hearings whether to withdraw Darvon, a painkiller made by Xanodyne and used for over fifty years, from public distribution.Attorney at Law: Darvon and Darvocet: Popular Pain Killers Facing Possible Ban (January 30, 2009)

Xanodyne Pharmaceuticals was founded in 2001 as UBE Pharmaceuticals, but changed to its current name in 2004. The company manufactures a variety of pain relief medications including the widely prescribed Darvon and Darvocet brands, as well as a Roxicodone line of products containing oxycodone. The company also has a line of prenatal vitamins, as well as a drug, XP12B, which is designed to reduce menstrual blood loss in women who suffer from excessive bleeding during menstruation.