Someone above said viagra is for "mild pain". As far as I know it is only for ED, which is also a side-effect of diabetes.
Is it good for anything other than ED? (other than putting another guest host behind the golden EIB microphone tomororow - The guy today had Ed Messe, Ann Coulter, Mark Steyn - great show).
It was originally formulated for the heart, then re-formulated for Mr. Happy.