Fildena treats both psychological and physical causes of erectile dysfunction. Contains Sildenafil Citrate, a common ingredient used in various leading branded ED pills like Kamagra, etc. This ingredient circulates blood in the penile area and works to relax the muscles. You can use this medicine 1 hour before intercourse to enjoy a strong erection. The effect of this medicine lasts for about 3-4 hours. You can take this medicine with water. Always use this medicine as per the doctor's advice. Using this medicine improves your sex life. It is imperative to use this medicine only once in 24 hours.