"i am 26 and started taking classes again. i was diagnosed add at 9 and was off and on adderall and ritialin through high school. i would always take it in the morning of school days, and not take it on weekends. i&#039;m on 70 mg vyvanse now i&#039;ve been on for 3 months. i like it because it suppresses my appetite the least of the 3 medicines. i&#039;m getting concerned though, because with school and work i will take 2 a day sometimes. but i still don&#039;t take it on non work or school days, but my concern is i think i am feeling withdrawal effects. i took it 12 days straight between 70 and 140mg a day, and the first day i didn&#039;t take it i couldn&#039;t get out of bed and felt depressed and had no motivation. i&#039;m on day 2 and my brain feels like mush."