Viagra and Cialis not working?

How do you increase the chances of an erection?:
"I am a 65-year-old man with a bad impotence problem. I have tried both Viagra and Cialis with poor results. Do you have any suggestions to improve my ability to achieve an erection? By the way, I do get erections when I'm asleep and occasionally even have wet dreams."

Read Dr Lamm's reply here...