Dark chocolate contains the most caffeine at about 636mg per POUND.. an 8 oz cup of coffee has between 95 - 200mg of caffeine. GNC Total Lean Rich Chocolate has about 50mg of caffeine in a two scoop serving (according to shopping.com). So two scoops is equivilant to half the caffeine in a lower caffeine cup of coffee. Does that make sense? =] If you are only drinking 1 or even 2 a day, you should be fine (but, I must add that I am not a doctor).