Men after their 40s can experience erectile dysfunction problems. Various mental and physical health conditions can lead to such problems. With ED pills such as Sildenafil, it is possible to get and maintain an erection for a desired time. Sildenafil is a safe and effective ED medicine that doctors prescribe to get positive effects. With 30 minutes of action time, it helps keep an erection for long hours. Various Sildenafil brands include Cenforce, Aurogra, Malegra, Fildena, etc.