Erectile dysfunction can affect not only men but also couples, threatening to take the fun out of sex and make it feel like a chore. The main thing to concern is to save a relationship by using fildena 50 capsule. If you have trouble in getting and maintaining erection then it is said that you have erectile dysfunction. Erectile dysfunction is caused when there is lack of blood circulation in the genitals. And while the ED is more common among men over the age of 50, it can happen at any age.