Generics Watson Pharmaceuticals (NYSE: WPI) says that its subsidiaries, Andrx Labs and Watson Laboratories have filed Abbreviated New Drug Applications with the US Food and Drug Administration seeking approval to market oxycodone hydrochloride extended-release tablets in the 10,15, 20, 30, 40, 60 and 80mg strengths, a generic version of Purdue Pharma's OxyContin, which are indicated for the management of moderate to severe pain when continuous, around-the-clock opioid analgesic is needed for an extended period of time. 28 March 2011