Vilitra 20 is taken for impotence and erectile dysfunction in men. This medicine contains an ingredient called vardenafil which helps in increasing the blood flow to the penile tissues in men and helps in relaxing the muscles of the penile tissue. This medicine is only taken by men above 18 years of age. You can take this medicine before or after food. The effect of this medicine lasts for 4 to 4 hours. This medicine is best for treating sexual problems in men.