I know when i switched over from xanax to valium about 10 years ago, i was all over the board with how much xanax i took...somedays it would be 3MG other days it would be 1mg or .5, normally though it was about at least 1mg a day. My Dr. started me on 30MG valium which was way too much, i was dizzy all day and was doing reckless things (im super sensitive to meds) so she took me down to 10MG and man that sucked, i felt horrible like i had the flu it was the worst, so we settled on 15MG. That seemed to fit me just fine, after two weeks i felt completely stable. I think maybe its a case of everyones system is different and we all handle this stuff different at different levels. Its finding the right starting point for you that is important? Using the manuals as general guidelines? Thats what it seemed like at the time anyways.