The fildena 150mg can be oral medicine for Ed (Erectile Dysfunction). The active component is sildenafil citrate included in this drug.  Sildenafil citrate can be actually a PDE - 5 inhibitor. This formulation can be originally developed for the treatment of blood pressure but over a period of time, it can be found to be extremely effective for the treatment of Ed in men.  According to a research study, it can be found that 4 to 5 men who suffered from the erection issue are taking the PDE - inhibitors drug to improve their erection.