"i&#039;m in high school, and just got prescribed to 30mg adderall xr. when you take it, it starts to work in 30-45 minutes. you are supposed to be able to feel the effects for around 10 hours i believe, and i only feel them for 6 or 7. i feel the full effect for 3 or 4 hours and then they gradually weaken. i told my doctor that i get bored listening to the teacher talk for an hour straight, and get distracted very easily. i thought that the adderall was going to make me pay attention and not get distracted, but the only thing i have noticed so far is that it makes me very neat with everything (which comes in handy at times). however, it seems like whenever i take it i&#039;m in a good mood. overall i like it."