Phencyclidine (a complex clip of the chemical name 1-(1-phenylcyclohexyl)piperidine), (PCP) and known colloquially as angel dust or wet, is a recreational dissociative drug. Formerly used as an anesthetic agent, PCP exhibits both hallucinogenic and neurotoxic effects. PCP is an NMDA receptor antagonist.PCP is an NMDA receptor antagonist. PCP, like ketamine, also acts as a D2 receptor partial agonist. D2 receptor antagonists (such as haloperidol) can be used in the treatment of PCP psychosis.