Pfizer ... combine Lipitor with Zetia.

Pfizer said they were beginning development on a cholesterol-lowering product that would combine Lipitor with Zetia.
The development program is timed so the combination product could be available when the patent for Lipitor, expires in the U.S. andinternationally, the companies said. Lipitor is expected to face generic competition in the U.S.A. in 2010 or 2011.