Amphetamines, also known as speed, bennies, beans, or uppers, are stimulants that affect dopamine or our brain’s reward system. When someone takes these drugs, their central nervous system gets stimulated which leads to more dopamine being produced. This boost in dopamine results in feelings of euphoria and a general sense of happiness.
Amphetamines can be taken by swallowing, snorting, or smoking, and less frequently, by injection. Methamphetamine in powder form is usually swallowed or snorted. The crystalline version is also popular.
Although these drugs can be used to treat attention deficit hyperactivity disorder (ADHD), narcolepsy, treatment-resistant depression, and even obesity, any misuse can lead to addiction.