just like the other guy said try to get off the caffeine slowly. personally i dont try to limit my caffeine as much as was suggested i drink diet dr peppers (2-4 a day) and lots of iced tea with splenda, but i keep checking my ketostix just until i have learned everything i can keep doing and what i cant. so far the caffeine has not made a difference i am in ketosis and have lost 5 lbs. in the first week of induction (and am losing inches as well, dummy me i didnt measure before starting but i can tell there's more being lost than what the scale has made.)