I am a type 2 diabetic....I drink at least (2) 8.5 oz red bulls every am before work. I know its addictive as I have stopped drinking it for a few days and even a couple of weeks before but always come back as I begin to crave them. A while back someone told me thatthey contained nicotine, so I began looking up their ingredients. one of them (can't remember which one) is actually a form of "Liquid NICOTINE". As a former smoker, I know what the cravings feel like..no wonder I'm having trouble staying away from them! I intend to quit again but this time for good. If anyone has any further research on the nicotine angle, please reply. Thanks