What is the classification of drugs that alleviate pain by depressing the central nervous system?

The classification of drugs that alleviate pain by depressing the central nervous system is indeed categorized as depressants. Depressants work by slowing down brain activity and nerve impulses, which can result in decreased perception of pain. This mechanism is crucial in pain management, as it allows individuals to experience relief from discomfort.

While stimulants are known for increasing alertness and energy by enhancing brain activity, and antidepressants target mood regulation rather than direct pain relief, narcotics are a specific subset of depressants often used for pain relief. It's important to note that while narcotics do alleviate pain, the broader category that includes narcotics is depressants, which encompasses various substances that produce a calming effect on the central nervous system.