I just put up an order to sell my Pfizer stock. Zoloft, Celebrex and Bextra are all outstanding medications with bum raps against them. The depo-Provera is however extremely dangerous.
I wouldn't own a pharmaceutical stock for any reason, there are way to many downsides, one bad report and the company is nearly bankrupt (and it's usually something that was the new "wonder drug" just the day before).