Filitra 40mg, which contains vardenafil, is used to treat erectile dysfunction. It typically works faster when taken on an empty stomach. This is because the presence of food, especially high-fat meals, can slow down the absorption of the medication in the digestive system. When taken without food, the body can absorb vardenafil more quickly, usually allowing it to start working within 30 to 60 minutes. On a full stomach, the onset of action may be delayed, and the effectiveness could be reduced. Therefore, for faster and more consistent results, it is generally recommended to take Filitra 40 mg on an empty stomach.