Erectile and Sexual Dysfunction:

Impotence has been defined as a male's inability to achieve or maintain a penile erection for satisfactory sexual intercourse. Experts estimate that between 10 and 20 million men in the United States may be affected by impotence.

For additional information, visit the American Foundation for Urologic Disease site at:
http://www.afud.org or http://www.pfizer.com or http://www.visitams.com