On 3d catherization in 9 years, 2 stents placed end to end in LAD. Placed on 10mg Effient; after 5 weeks changed over to 75 mg Plavix (also take 30 mg Isosorbide monitrate along w/0.81 mg aspirin. For first 4+ weeks heaviness in chest w/periodic angina. Notice with excitement or now-a propensity to become angrier easier, have chest pains for awhile. I have always been very healthy and full of energy-that is, until this year. I now realize that my "youthful" activities are gone although everyone thinks I'm at least 10 years younger. On Plavix changeoever, Dr said I should stay on Plavix for 3-6 mos and then tested again. I wasn't told to do so but should probably hve to have have some sort of relaxant-like xanax when I'm about to confront a serious conversation due to chest pains when become angry-which is very unusall for me. Probably goes with the problem? What is usuall time element on Plavix? Is there any other things I should be aware of? Thank you............