You're awake and working until you fall asleep, satisfied and relieved. I always wished I had. Unlike speed or cocaine, however, you can still function normally. After I study on Adderall, I retain the knowledge. It's a prescription drug, a controlled substance designed for people with Attention Deficit Disorder.
Every drug has some side effects.
The real worry is dependence, though. Some kids say that after they've been using Adderall really frequently, they cannot concentrate without it. It is not something to use every day. Few things are. I've heard of kids doing 80 mg.