PCP, or phencyclidine, is a “dissociative” anesthetic. Its sedative and anesthetic effects are trance-like, and patients experience a feeling of being “out of body” and detached from their environment.CP can be snorted, smoked, injected or swallowed and is most commonly sold as a powder or liquid and applied to a leafy material such as mint, parsley, oregano, tobacco, or marijuana when used for smoking.