fildena 100 tablet have been used to treat erectile dysfunction in men. This medicine contains Sildenafil citrate, an active ingredient. Take this medicine orally with water. But do not break or chew fildena tablet. The effect of this drug lasts for 4 to 6 hours. If the effect of this medicine lasts for more than 6 hours, consult a doctor immediately. However, do not take this drug with alcoholic beverages as it reduces the effect of the drug.