Fildena 150 is a medication used for the treatment of erectile dysfunction (ED) in men. Fildena 150 contains sildenafil citrate as the active ingredient, which belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. Sildenafil citrate works by increasing blood flow to the penis during sexual stimulation, facilitating the ability to achieve and maintain an erection.