Erectile function has been normal but becomes problematic. The causes of new and persistent problems are usually physical. Cenforce 150 tablet should be used to treat this problem of impotence in men. The sildenafil citrate in this drug works by increasing the speed of blood in the arteries of the penis and helps in relaxing the muscles. This medicine should be used only once a day. Strong erection can be achieved by using this drug about 30 to 40 minutes before sex.