Recently we saw a 58 year old diabetic man who complained of erectile dysfunction with a gradual onset. His blood sugar was averaging 7.5mmol. He was slightly overweight.
He had seen his GP and had been prescribed Viagra with no real effect.

On further questioning, he revealed he had numbness in both his feet. This tended to support the view that the problem was a nerve loss as well as blood supply problem.
Viagra can be great when mild to moderate circulation is the cause of erectile problems but cannot help when nerve damage is evident.
We tested his function, got a very good response and commenced him on self-injections. In his follow up call he said his erections were really good and he was very happy.