The drugs in question are known as NSAIDs and COX-II inhibitors.
Research results show a 70 percent increased risk for COX-II inhibitors and a 40 percent increase in risk for NSAID users among new users of the drugs.
Celebrex is the only widely used COX-II inhibitor on the market today.
Previous research has linked NSAIDs and COX-II inhibitors to an increased risk for heart attacks and strokes. This is the first study that links the painkillers to atrial fibrillation.