naNO Vapor. I've been using it for about a month now. Other than the fact that my body got rapidly used to it and taking it 15 minutes before going to the gym and having a crazy rush for half an hour turned into taking it immediately before leaving the locker room and having that rush for about ~15 minutes I'd say I like it.Still, the tub is almost empty and I'm looking for something else to use. Any suggestions? And do any of you have any experience with this stuff?