Hi. Ive been on vyvance now( prescribed) for going on 2yrs. I started at 30,am now at 60. I take holidays or cpl days off a month to keep from building a tolerance. Problem im having is its wearing off in about 7hrs then become ridiculously sleepy. I have read that people take a booster during the day rather than up it to 70. She has uped each time and all it does is work for a cpl weeks,then im back where i started. My dr wont break it in half( 2x 30 as opposed to 1x60). I dont know what to do. It has worked wonders and ive already had a 15yr nightmare of them refusing to look at adhd and keep prescribing antidepressants,seraquel,trazedone etc... I finally got them to try it,my symptoms went away almost imed. What boosters are safe with vyvance or whats best way to proceed