I read the bolded and thought, hmm, I think I've experienced this. Sure enough, yesterday I popped a 1/4 pill to help overcome the muscle relaxant and nerve block I'm on. The good news is it made my noodle quite al dente. The bad news is it took me forever to finish. I was on the edge for a long time and it actually felt pretty good, but after a while I felt bad for my wife who was working it like a pro.
I imagine pron stars take these to get both effects. I might retire them, though. I might first try a few more times, since a sample of one (while on meds) isn't exactly a good experiment.