Vilitra is a powerful doctor-prescribed medication process for the treatment of Erectile Dysfunction (ED) or Impotence in Males. Men Buy Vilitra Online at Cheap Price. Vilitra is a class of medicines called phosphodiesterase (PDE) inhibitors or PDE 5 enzyme group. It also works by increasing the blood flow to the penis during the time of sexual stimulation. This increased blood flow can cause an erection. Vilitra does not cure male erectile dysfunction but gives a better sexual moment.