It turns out that administering low-intensity shockwaves to the penis can help men with blood flow problems get over their difficulties getting a hard on. Viagra and Cialis help, but they need to keep taking the pills every time. This is a more permanent solution, because the shocks encourage the growth of new blood vessels from existing ones. It’s still a preliminary study, but it’s looking promising.

Shocking Treatment Helps Erectile Dysfunction | LiveScience.