FDA issues red alert on Pfizer's Xeljanz after trial tags higher dose with blood clots, death - FiercePharma

FDA issues red alert on Pfizer's Xeljanz after trial tags higher dose with blood clots, death  FiercePharma

Pfizer said earlier this month that it would change up its dosing in a Xeljanz trial after higher doses raised safety flags. Now the FDA is taking action, too.