Vilitra 20 has proven to be the best medicine for the treatment of ED. Also known as the problem of impotence. If you are confused as to how to take Vilitra 20mg, then Vilitra 20 is taken 30 minutes before sex which has an effect of 4-5 hours. Vilitra 20 can be taken before meals and after meals. The effect of taking Vilitra on an empty stomach is accelerated.