Men with erectile dysfunction can receive treatment with vilitra 20 .vardenafil, a component in this medication, helps men get and maintain firm erections during sexual activity, allowing them to enjoy it for longer. This medication takes four to six hours to take effect. Take this medication half an hour before sexual activity. You can also take this medication as prescribed by your physician. Men over the age of 18 should be the only ones taking this. This medication can be used either before or after a meal.