IT WON T PREVENT IT but what will do is decrease the damage to the heart muscle during cardiac crisis known as a heart attack or heart infarct. it makes the part of your blood that forms clots slick so that it doesn t stick to the sticky plaque that has started to clog the artery that is causing the problem. Thus like a clogged pipe it lets blood slowly go through it until a plumber, better known as a heart doctor can roto rooter it and clean up the stick plaque or re-route the blood supply. need more info update your question and i will try to lead you through heart problems.