This Filitra 20 mg composed medication is the most powerful impotence answer and functions for almost all impotent men. The medication works as a phosphodiesterase (PDE-5) inhibitor that allows in enjoyable the clean muscle groups of the penile region. Vardenafil is categorised below the organization of medication known as PDE5-inhibitors. This ED drug reduces the secretion of phosphodiesterase-5 (PDE5).