What is a common characteristic of depressants?

A common characteristic of depressants is the physical and observable effect they have on the appearance of the eyes, which can include being bloodshot or glazed. This occurs as these substances function to slow down the central nervous system, which can lead to relaxation and sedation. As part of this physiological response, the body may exhibit signs of reduced mental alertness and coordination, contributing to the characteristic look of the eyes.

In contrast to the effects of depressants, increased energy levels and enhanced alertness are typically associated with stimulants, which work to elevate mood and boost activity. Improved memory retention is not a common characteristic of depressants either; in fact, they can impair cognitive functions and memory, making this trait inconsistent with how depressants function. Therefore, the signs of bloodshot or glazed eyes provide a clear and accurate indication of the sedative effects associated with depressant use.