"i am a 25 yr old woman, i&#039;ve been on vyvanse for about 1.5-2 yrs and i have had a great experience with it. i&#039;ve always been a bright student and done pretty well in school, i got by in high school but found myself struggling in college. i got diagnosed with adhd, tried strattera, tried concerta to no effect. new doctor suggested vyvanse, i started at a 30 mg, i&#039;m up to 70 mg a day but have been steady on that dose for at least a year. it has decreased my appetite, but i also started p90x not long after i started taking this drug so i&#039;m not sure which is more responsible for my weight loss. besides that, no real side effects just helps me focus and concentrate on whatever i am supposed to be doing (and not just daydream)."