A hallucinogen formerly used as a veterinary anesthetic, and briefly as a general anesthetic for Humans. Phencyclidine is similar to Ketamine in structure and in many of its effects. Like Ketamine, it can produce a dissociative state. It exerts its pharmacological action through Inhibition of NMDA Receptors (Receptors, N-Methyl-D-Aspartate). As a drug of abuse, it is known as PCP and Angel Dust.