Fildena 100 medicine is used to treat impotence in men. Sildenafil included in this medicine works to relax the muscles by increasing blood flow to the penis. This medicine can be used 1 hour before intercourse to enjoy a strong erection. The effect of this medicine lasts for about 36 hours. This medicine should be used only on the advice of the doctor. This medicine should be taken only once a day. This medicine can be used on an empty stomach and enjoy a strong erection. Cold drinks or alcohol should not be consumed while taking this medicine as it slows down the effect of the medicine and its side effects are seen on your body.