Sildenafil acts as the active ingredient in Fildena 50 drugs. Fildena 50 is taken 1 hour before intercourse. After taking it, its effect lasts for 4-5 hours. Fildena 50 Mg is one of the best tablets to solve the problem mainly during sex. Fildena 50 Mg is one of the best tablets for ED. Seek medical advice before taking Fildena 50. Fildena 50 is a popular tablet.