I was curious so I took it once with the girl I was really into and was new in the relationship., I was healthy, and in good shape when I took it. Was having a good amount of sex consistently so my sex conditioning was good. My point, I took this pill and after a good couple of hour sex fest, my shlong was still erect. I was worried, went to sleep with a hard on after not wanting one....I was actually concerned that I would damage nerve tissue in my penis (can happen if you maintain an erection for an extended amount of time.) The concensious was that it was a novelty, but It is not fun maintaining an erection even after you orgasm a couple times....