Amphetamines are synthetic psychoactive drugs that act as stimulants to the nervous system. They come in two forms and are used both medicinally and recreationally. Medicinally, they are used to treat conditions like obesity, narcolepsy, and ADHD, while recreational uses include improving mood, increasing alertness, and curbing appetite. Long-term abuse can lead to mental health issues, physical harm, and addiction. Methamphetamine, a concentrated form of amphetamine, is particularly dangerous due to its high addictiveness and potential for long-term brain damage.