Pfizer's Celebrex shown to be as safe as ibuprofen or naproxen: study

NEW ORLEANS (Reuters) - Pfizer Inc's Celebrex arthritis drug was shown to be at least as safe as the widely used prescription-strength versions of painkillers ibuprofen and naproxen, and does not appear to cause heart problems that spurred the withdrawal of rival Vioxx, according to a large 10-year study presented on Sunday.