Sildenafil. ED Information.
Most men will have an isolated erection problem at some time in their lives, but for others it happens more frequently. If the inability to respond to your partner has become a recurring problem, you may be suffering from a treatable medical condition called erectile dysfunction, also known as impotence. If you suspect you have ED, there's no need to suffer in silence. You are not alone. It's estimated that about half of all men aged 40 to 70 years in the United States are affected with ED to some degree.