Central nervous system agents are medicines that affect the central nervous system (CNS). The CNS is responsible for processing and controlling most of our bodily functions, and consists of the nerves in the brain and spinal cord.
There are many different types of drugs that work on the CNS, including anesthetics, anticonvulsants, antiemetics, antiparkinson agents, CNS stimulants, muscle relaxants, narcotic analgesics (pain relievers), nonnarcotic analgesics (such as acetaminophen and NSAIDs), and sedatives.