Repped Up: In his post on Cox-2 inhibitors, the class that counts as one of its members the now widely disparaged Vioxx, Derek Lowe notes that Pfizer, maker of the other two members of the class, Bextra and Celebrex, saw its shares go down with the news of Vioxx's demise. That explains why not one, but two, drug reps came to my office yesterday, both eager to explain to me why Celebrex and Bextra are safe.