Methamphetamine is psychostimulant in the amphetamine class. It has medical uses in the treatment of attention deficit hyperactivity disorder (ADHD) and obesity. It has a high potential for abuse and medical use comes with tightly controlled regulatory restrictions. Abusers value it for the euphoric rush, sustained high and increased sense of energy it produces. Abusers can obtain the drug through legal medical channels, much of the abused form is manufactured in meth labs, using a variety of methods with a range of complexity. In recent years, restrictions have been place on the ability to purchase the chemicals and substances required to produce methamphetamine.