"Pfizer (PFE:NYSE - news - research) shares fell Thursday after the drugmaker agreed to a Food and Drug Administration request to withdraw its controversial arthritis drug Bextra.
"Regulators also called for a so-called black box warning on the drugmaker's Celebrex, a bigger part of Pfizer's arthritis franchise. The black-box warning is the most serious warning required by the FDA, and it greatly limits a drug's usage and appeal as well as a company's advertising efforts." [TheStreet.com]
