The active ingredient in the name of vardenafil is found in the vilitra tablet which is used to treat the problem of erectile dysfunction seen in men nowadays. The effect of this drug lasts for 4 to 6 hours. If you take this medicine one hour before sexual intercourse, you can see the effect of vilitra 20. This medicine can be taken with or without food but if you want to take this medicine with food, do not take this medicine with heavy food. Because it reduces the effect of the drug.