Robust data shows that Acoustic wave, better known as shockwave, therapy improves ED in about 70-85% of cases. This is a general percentage addressing all people seeking the treatment, but a focused consultation with provider knowledgeable in erectile dysfunction can provide a much better estimate of success for any given man's specific ED problem. There are several different causes of ED, and the success rate will depend on both the underlying causes AND the severity/duration of the problem. Your best bet is to find a provider dedicated to sexual medicine, and ideally a urologist with deep knowledge of the anatomy and nuances of erectile function. We have had excellent results with shockwave therapy, but it may not always be the best choice of treatment depending on the underlying causes and any associated factors. To achieve the best results, the man's hormonal and vascular status must be optimized. Many centers are now introducing shockwave therapy as an option in their offerings for ED treatment--largely because the data proves it is effective. To get optimal results, look for providers with an extensive history in treating all male sexual dysfunction problems because you will ultimately get better results and a more honest approach. The best answer as to how this therapy works is that it helps to restore the function of the smooth muscle cells of the corpora cavernosa. The health of these smooth muscle cells are the key to the hydraulic mechanism within the penis. Shockwaves cause these cells, and the tissue around them, to secrete the body's own growth and healing factors. These growth factors restore and rejuvenate the smooth muscle cells so they respond and work much better--like they were when the man was younger. The end result, in the appropriately chosen man, is to restore the normal hydraulics to the erectile cylinders in the penis. That is a brief explanation of a fairly complex biologic process, but the beauty of it is that we have solid data available that proves this mechanism. I hope that helps you understand that shockwave therapy for ED is not only effective in the appropriately chosen man, but that it should be first line treatment since it is addressing the underlying problem leading to the dysfunction instead of just treating the symptom which is what the meds like Viagra and Cialis do!