"started off with concerta in may 2012 it was not effective at all, switched over to adderall xr 10mg in july 2012 for seven days as a starter dose, then started adderall xr 20mg,  i noticed a considerable difference between the two medicines instantly. i am able to focus for a very long period of time without being distracted, my grades improved exceptionally, i went from receiving grades below 55% now my lowest grade is 83%. the benefits of this medicine do outweigh the side effects for me, i noticed 20 minutes after taking adderall, i have increased bowel movements, lower libido and decreased appetite. i stop taking adderall during breaks and long weekends, the first day not on it, i am extremely tired, exercising and eating healthy helps."