Filitra 40 is a medication that contains the active ingredient vardenafil. It is used to treat erectile dysfunction (ED) in men. Vardenafil is a phosphodiesterase type 5 (PDE-5) inhibitor, similar to sildenafil, which helps increase blood flow to the penis when a man is sexually stimulated. This increased blood flow can facilitate the ability to achieve and maintain an erection, improving sexual performance.