Sildenafil acts as the active ingredient in Fildena 120mg. Fildena 120 Mg is a popular ED pill, which can help you enjoy your sex life better and improve your sex life. If you also want to take this drug and are thinking about when to take these tablets, let us know that Fildena 120 is taken 30 minutes before sex, after which its effect lasts for 5-6 hours. The effect remains.