Vilitra will produce its action only when a man is sexually aroused. To observe the effect of this medication, you need to take these oral tablets at least 30 minutes before sexual intercourse. It contains Vardenafil, the fastest-acting PDE-5 inhibitor. Its effect is seen within 10 minutes. The action of Vilitra lasts for about five to seven hours on an average.
When a man is sexually aroused, there is a release of nitric oxide inside the penile region. Nitric oxide stimulates the synthesis of cGMP, whose function is to produce dilation of the blood vessels and relaxation of smooth muscles inside the penile region. Another enzyme, PDE5, produces degradation of cGMP. Vardenafil, potent PDE-5 inhibitor stops the action of PDE5, thus elevating the levels of cGMP inside the penile region. This enables a man to achieve an erection.