Abstract
Methylphenidate (MFD) is an active principle known in Brazil under the trade name Ritalin®, a substance structurally related to amphetamines. It is one of the most consumed stimulants in the world, being used mainly for the treatment of Attention Deficit Hyperactivity Disorder (ADHD). However, due to psychostimulatory effects, many university students who do not present criteria that just…