I have been on the stuff for over 3 years and it was until recently that I have been having horrible anixiety/panic attacks and everytime I take something new (allergy medicine, tylenol, etc) I have crazy anxiety. The only thing I can think of is warfarin. I am hoping that other stuff I found online that switching to the Coumadin might help? Could my pharmacist maybe gotten a different kind of warfarin that is not agreeing with that is causing me to act this way? It has been really stressful! I want my life back and not to be subjected to this crazy anxiety