Amphetamine is a valid drug for treating ADHD and lots of other diseases. It works and because of that it has side effects. Generally speaking if there are no side effects, there are no effects. Some of these side effects can be seen as pleasant by some people so they abuse it. There's nothing wrong with the drug but with the people abusing it.
Rookie Hammer Squad 2015
Frankie Edgar - Dominick Cruz - Jorge Masvidal - Cat Zingano - Holly Holm