The fact that Levitra - a selective inhibitor of fifth type, hardly likely to be useful to anyone but specialists. If you explain the action of Levitra more simple terms, the phosphodiesterase - a strong special enzyme that strongly triggers a complex reaction, and the end result is - a complete relaxation of smooth muscle, it is a structural part of the men's penis. As a result, it perfectly promotes better blood filling the cavernous bodies, as a result - is a full strong erection. How effective is this medicine? Why do you need to order levitra? According to many various studies, 6 out of 10 men by Levitra fully regained their sexual function - a perfect erection. Other studies which are taken into account a survey of those men who have chronic problems, are more significant for optimism - they increase their rate to 8 out of 10. Such efficiency shows that Levitra can bring back the joy of intimacy and perfect quality erection vast majority.Can anyone help Levitra, erectile dysfunction if passed into serious stage?Extreme stage of erectile dysfunction require only an integrated approach to their therapy.