* Lipitor, a popular cholesterol drug, goes generic in November.
* Solodyn, used to treat bacterial infections, November.
, which treats schizophrenia, October.
* Lexapro, used to treat depression, March
* Provigil, which treats sleep problems, April
* Plavix, an antiplatelet drug which can prevent blood clots, May.
* Singulair, an Asthma drug, August 2012.