It's "refractory period," not that it's a big deal. Medically, refractory period is the time needed to be responsive to stimulation again, not the time before climaxing again. I guess I can still just about call myself middle-aged. I don't take any ED drugs. After my first shot, I can get usually get hard again very quickly, as in a couple of minutes, in a stimulating environment. I guess it's not so common because I get a lot of comments on it. Though often that's girls trying to sell me another hour, so big grain of salt. Actually climaxing again, maybe 40 minutes or so after the first, but that second one can be hard work. Though, about a month ago, I had two within 15 minutes, staying pretty hard the whole time. I think that was some one-off magic.