What is phencyclidine (PCP) primarily known for?

Phencyclidine (PCP) is primarily known for its use as an anesthetic, particularly in veterinary medicine. Originally developed in the 1950s as an anesthetic for humans, its use was eventually discontinued due to severe side effects, including hallucinations and agitation. However, it is still employed in some animal anesthesia practices because of its analgesic properties.

PCP is classified as a dissociative anesthetic, which means it can induce a sense of detachment from the environment and self, leading to altered sensory perceptions. This characteristic is a defining aspect of its anesthetic effects, distinguishing it from substances like depressants that typically slow down central nervous system activity. While PCP can also lead to other effects such as euphoria or psychotropic experiences, its primary and most recognized application is as an anesthetic agent.