fildena 100mg should be taken 45 to 60 minutes before sexual activity so that after 1 hour you can have a strong erection for 4 to 6 hours. Sildenafil is the drug contained in Fildena.With this medicine you will be able to maintain an erection for a long time. Fildena 100mg is a special dosage of Fildana that you can use and fight against your serious illness. You can buy this medicine from us at 20% discount.