What is a common term used to describe CNS depressants?

The term "downers" is commonly used to describe Central Nervous System (CNS) depressants because these substances primarily work by slowing down the activities of the brain and the nervous system. CNS depressants include medications such as benzodiazepines and barbiturates, as well as recreational drugs like alcohol. The effects of these substances typically include sedation, muscle relaxation, and a calming effect, which contrasts sharply with the stimulating effects of other drug classes.

In contrast, the other terms refer to different categories of substances. "Uppers" refers to stimulants, which increase alertness and energy. "Stimulants" are characterized by their ability to enhance mental and physical activity. "Hallucinogens" are substances that alter perception, mood, and cognitive processes, often leading to experiences that can be quite different from those induced by CNS depressants. Therefore, "downers" accurately captures the essence of the effects and purpose of CNS depressants.