Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Amphetamine is part of a group of synthetic psychoactive drugs which affect the central nervous system. Usually used to treat narcolepsy and attention deficit disorder with hyperactivity (ADHD), it may also be used for non-medical purposes. Having a near similar chemical structure with adrenaline and noradrenaline, two hormones produced by the human body, the amphetamine has euphoric effects, with high popularity among people, as it allows to stay awake for long periods of time, reduce fatigue, and improve performance in sports, as well as boosts endurance and self-confidence increasing effects. Learn more about the amphetamine drug and its effects in this book.