Amphetamine
Amphetamine was discovered in 1887 and exists as two enantiomers: levoamphetamine and dextroamphetamine. At therapeutic doses, amphetamine causes emotional and cognitive effects such as euphoria, change in desire for sex, increased wakefulness, and improved cognitive control. Larger doses of amphetamine may impair cognitive function and induce rapid muscle breakdown. Addiction is a serious risk with heavy recreational amphetamine use, but...