Fildena is for men who suffer from impotence or erectile dysfunction. It is a sexually transmitted disease that prevents a man from maintaining an erection. Sildenafil citrate is the active ingredient in this tablet. It works in the treatment of erection problems in men by increasing blood flow to the penis area by relaxing the muscles in the penile blood vessels. This medicine is a gelatin capsule that can be swallowed with a glass of water. You should consult your doctor before taking this medicine.