A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana.
If they took all the drugs, nicotine, alcohol and caffeine off the market for six days, they'd have to bring out the tanks to control you. Dick Gregory
I drink booze, I smoke, and I'm hooked on caffeine. I actually have been known to swear at times and belch and even raise my voice when provoked. And I'm not physically repressed! Helena Bonham Carter
