Methamphetamine also known as methamfetamine, N-methylamphetamine, methylamphetamine, and desoxyephedrine, is a psychostimulant of the phenethylamine and amphetamine class of psychoactive drugs. Methamphetamine increases alertness, concentration, energy, and in high doses, can induce euphoria, enhance self-esteem and increase libido.Methamphetamine has high potential for abuse and addiction, activating the psychological reward system by triggering a cascading release of dopamine in the brain. Methamphetamine is FDA approved for the treatment of ADHD and exogenous obesity. It is dispensed in the USA under the trademark name Desoxyn.