Vilitra 20mg with Vardenafil 20 mg salt is the preferred medicine for erectile dysfunction. Erectile dysfunction is primarily male impotence.Vilitra 20 mg (Vardenafil) contains Vardenafil which is a PDE-5 inhibitor. PDE-5 is responsible for the breakdown of cGMP as a response of s*xual stimulation. As much as the higher level of cGMP levels longer is the duration of erection of p*nis in man.