Men with erectile dysfunction are treated with Vilitra. It belongs to a group of medicines known as phosphodiesterase inhibitors. During sexual stimulation, it increases blood flow to the penis. An erection may result from this increased blood flow. Vardenafil doesn’t improve sexual desire or treat erectile dysfunction. Pay close attention to the instructions on your prescription label, and ask your pharmacist or doctor to clarify any parts you don’t understand. Follow the directions on vardenafil precisely. Never take more or less of it, or take it more frequently than your doctor has suggested. While using this medication, avoid eating or drinking grapefruit juice.