Fildena 120 mg is used to treat the sexual problems of erectile dysfunction in men. This medicine contains sildenafil citrate, which increases blood flow to the penis to keep it strong during intercourse. The effect of this medicine lasts for about 36 hours. This drug should only be used by men 18 and older. Alcohol should not be consumed while using this medicine. You can enjoy a hard erection by using this medicine 1 hour before intercourse.