Phencyclidine (PCP) was once used medically as a surgical anaesthetic.

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PCP was first synthesized in 1926 and was used as a surgical anaesthetic in the 1950s and 1960s until its potential for causing hallucinations and other adverse effects became apparent. It was then classified as a Schedule II controlled substance by the US Drug Enforcement Administration. Today, PCP is a popular recreational drug known for its dissociative and hallucinogenic effects. It is also known as angel dust or simply PCP.

Phencyclidine (PCP) Was Once Used Medically as a Surgical Anaesthetic