Sildenafil acts as the active ingredient in Fildena 25. Fildena 25 is taken 1 hour before intercourse, after which its effect lasts for 4-5 hours. Take Fildena 25 Mg only once as advised by the doctor. Taking Fildena 25mg can improve your sex life. Fildena 25 is one of the best tablets of ED. You can enjoy sex better by taking Fildena 25 Mg. Avoid taking this medicine if you are allergic to sildenafil.