Oh, I also have Excedrine Migraine tabs in my FAK, they have caffiene in them too. If I got really desperate I'd use them for the caffiene.
I have the same in my psk fak. For the same reason.
People who take caffeine all the time certainly build up a tolerance to it. Then it takes more and more to achieve the same results.
I stopped drinking caffeine for a while... Then I remember having a coke and boy was I buzzed.
Here's one for you:
Shower Shock Caffeinated SoapDisclaimer, blah blah blah, etc... Not affiliated... usw...