PCP is a dissociative. Its analogs include TCP, PCE, PCPY, PCC, and ketamine. PCP ranks the highest number of emergency department visits according to the Drug Abuse Warning Network (DAWN) in 2009.
It affects a chemical in the brain that controls emotions, memory, and pleasure. Therefore, its effects are notoriously unpredictable, but low doses are comparable to the effect of alcohol intoxication, and high doses with delusions, paranoia and hallucinations. PCP comes in a white powder which is often mixed with leafy material such as mint, tobacco or marijuana and smoked.