Right. Only the shot works to produce an erection...none of the pills do, even at higher doses (like 40 mg. of Levitra or 100 mg. of Viagra.)
I have not tried any other injectables.
I don't really feel any numbness after the injection. It's just that during intercourse, I can't feel anything much. It's almost like wearing two condoms at once or that kind of lack of sensitivity, rather than numbness. But again, without the shot, I have normal sensitivity, just no ability to have an erection.