Lack of blood flow to the penis in men can be eliminated by using Vilitra 20 mg medicine. This drug can increase blood flow to the penis in men. This medicine should be taken about 1 hour before intercourse. You can get this drug online from our store and also see Vilitra 20 review. It shows its effect on your body for about 4-5 hours after taking this medicine. This drug is only for men 18 years of age or older. This drug should not be overused.