Filitra 40 is a medication used to treat erectile dysfunction (ED) in men. It contains the active ingredient Vardenafil, which belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. Like other PDE5 inhibitors such as Viagra (Sildenafil) and Cialis (Tadalafil), Filitra 40 works by increasing blood flow to the penis, helping men achieve and maintain a firm erection during sexual stimulation.