Since I had a heart attack, I was anxious to put my son on a stimulant.
The psychiatrist has paid special attention to his physical responses, as have I. He had a very emotional reaction when the Adderall XR wore off, so he changed to Focalin XR. There are lots of choices. A school psychologist said her daughter found the Daytrana patch very easy to use and it gave her more control over the onset and wind-down of the drug.

Example: If you felt your heart racing (over 100 beats per minute, like you were working out BUT you are sitting still), then you should stop taking the stimulant and see the doctor.
Remember, you can check your BP and pulse in most pharmacies or grocery stores, it gives you a sense of how you are doing. Also, once the drug wears off, it's out of your system. Do you take it on the weekends?