Which substance is categorized as a stimulant?

Amphetamines are classified as stimulants because they increase activity in the brain and central nervous system. They enhance alertness, focus, and energy levels, which can lead to increased heart rate and blood pressure. Stimulants are known for their effects on enhancing mood and cognitive performance, making them distinct from other classes of substances.

Other substances listed, like GHB (a depressant), Valium (a benzodiazepine that produces calming effects), and PCP (often categorized as a hallucinogen), have very different effects on the body and mind. Understanding the classification of drugs is essential for recognizing their potential effects and implications in a correctional or probation context.