It's surprisingly easy to overdose on caffeine, regardless of if you kill yourself though. I ended up in the hospital worried about strange heart palpitations

It's surprisingly easy to overdose on caffeine, regardless of if you kill yourself though. I ended up in the hospital worried about strange heart palpitations once. It was due to too much caffeine. Apparently a litre and a half of pepsi plus a bag of chocolate covered espresso beans is a bad idea. That being said, I bet almost everyone here has felt the effects of caffeine intoxication before (http://en.wikipedia.org/wiki/Caffeine#Caffeine_intoxication http://en.wikipedia.org/wiki/Caffeine#Caffeine_intoxication). It's pretty easy to hit a level which causes those kind of symptoms.