It's an amphetamine and doesn't help people to concentrate, just the opposite. In some people with ADHD it s known to have a "paradoxical" effect calming the CNS. Kids abuse it because they are stupid, and for no other reason. For those who don't have ADHD and take it, it actually does help them concentrate. Nope Yes it does. Vyvanse especially. Particularly for those with ADD-PI.