I Love Coffee!!

"However, if you have any doubt that caffeine is a drug, and a potent one, consider that a dose of only 1 gram, equivalent to about six strong cups of coffee, may produce insomnia, restlessness, ringing in the ears, confusion, tremors, irregular heartbeat, fever, photophobia, vomiting and diarrhea." (from "The World of Caffeine" by Bennet Alan Weinberg and Bonnie K Bealer, published 2001 by Routledge).