The amount of sildenafil citrate in Fildena 100mg is lower. Treatment of impotence with this medicine is possible. Fildena comes in a range of dosages that can be used to treat erectile dysfunction and pulmonary edema. If you wish to have sex for 4 to 6 hours, you should take Fildena 100 an hour before you plan to have sex. This medication is currently 10% discounted for you.