I don't have ED (Erectile Dysfunction), but I happened to read something in my MensHealth magazine July/August 20011 issue, that I thought I'd share:

A Korean review concluded that red ginseng is more than twice as effective as a placebo for treating ED. Red ginseng contains ginsenosides, compounds that are thought to increase nitric oxide synthesis, a process that can result in improved erections, says D'Adamo. (You'll have to take if for several days or weeks to see results he says.) But first ask your doctor if other health conditions could be affecting your sexual performance.
Hope this helps and isn't a repeat of something already posted