Sildenafil acts as the active ingredient in Fildena 120 tablets. This is one of the popular and widely used remedies for sexual problems. Fildena 120 should be taken one hour before sex. After taking it its effect remains for 5-6 hours. This Tablet is the best and most used for sex. Fildena 120 mg is one of the most commonly used ED medications. TG is to be used once a day.