Sildenafil acts as the active ingredient in Fildena 100mg drugs. Fildena 100 Mg is mainly taken 1 hour before intercourse, after which the effect lasts for 4-5 hours. It is advisable to consult a doctor before taking Fildena 100 Mg. You can enjoy sex better by taking Fildena 100mg. Fildena 100mg is widely used. Take Sildenafil once a day.