Fildena is an effective oral tablet recommended for the treatment of erectile dysfunction in men today, and the tablet is taken with water for 20 to 30 minutes to treat ED in most men in the world today. This drug contains an ingredient called sildenafil which helps in increasing the blood flow to the tissues of the penis. The effect of this medicine lasts for 4 to 6 hours. You can take this medicine before or after food. Do not consume fatty foods or alcoholic beverages during this period.