They didn't work for me. I tried most of them. Erection problems happen to all men sooner or later. It happened to me and I tried just about every procedure available. Some work better than others and some flat out don't work at all.
Erection problems are treatable.
The trick is to find the medical treatment that works for you. Whatever you call it, Erectile Dysfunction, impotence or impotency, there are solutions . My list of sites relating to men's health that you might find usefull. There were many times when I could not get an erection. Each time I thought my sex life was over .