"Methamphetamine, also known as methamfetamine (INN),[2] meth, N-
methylamphetamine, methylamphetamine, anddesoxyephedrine, is a psychostimulant of the phenethylamine and amphetamine class of psychoactive drugs."
"A member of the family of phenethylamines, methamphetamine is chiral, with two isomers, levorotatory and dextrorotatory.[1] The levorotatory form, called levomethamphetamine, is an over-the-counter drug used in inhalers for nasal decongestion. Levomethamphetamine (a levoamphetamine derivative) does not possess any significant central nervous system activity or addictiveproperties. This article deals only with the dextrorotatory form, called dextromethamphetamine, and the racemic form."
"Methamphetamine increases alertness, concentration, energy, and in high doses, can induce euphoria, enhance self-esteem and increase libido.[3][4]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 nameDesoxyn[5] and manufactured by Ovation Pharmaceuticals which was purchased in 2009 by Danish pharmaceutical Lundbeck."