This article is from the Impotence FAQ, by Sine Nomine llama@drizzle.com with numerous contributions by others.
Theoretically, but most of the men on the newsgroup who've tried it
report a great deal of pain and little or no improvement in erectile
function (their descriptions of the pain make me wince, and I don't
even have a penis). The MUSE package insert indicates that significant
penile pain was reported by 36% of men in their studies, urethral pain
by 13%, and testicular pain by 5%. Seven percent of the study group
dropped out because of pain. Still, if you absolutely do not want to
use needles, MUSE may be an option.
 
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