<a href= http://sciencequest.ca/wp-content/gallery/cache/zi/zithromax495.php#nv4771 >http://sciencequest.ca/wp-content/gallery/cache/zi/zithromax495.php</a> Erectile dysfunction is the inability of the individual to either initiate or buoy up a penile erection for a adequate period of beat that is needed to attain a bodily gratification. disease and this figure can reach as turbulent as 20 to 50 percent for men of the age of 65 years or more.