IS there something you can give a man to make him impotent??

Question

I was just wondering if there are any kinds of drugs or herbs that prevent a man from getting an erection, being they have all kinds of things to create one?!?

Answer 1

Actually alcohol and marijuana really screw that up (hence the expression "whiskey dick") though it is difficult to predict how much. Also, certain types of anti-depressants kill a guy's drive or make it hard to get an erection.
I hope you don't plan on surreptitiously giving a guy anything to make him lay off, because that is really dangerous.