Harm Reduction TO

PCP

Also known As:

Angel Dust, Hog, Ozone, Rocket Fuel, Sherms/Shermans, Wack, Crystal and Embalming Fluid.

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What is it?

Phencyclidine, more commonly referred to as PCP, is a synthetic drug that was originally developed as an intravenous anesthetic medication in the 1950s. The medical use of this drug was discontinued when a high number of patients started showing signs of agitation, delusion and irritation while recovering from anesthesia. Following this discontinuation on human patients, PCP was then limited to anesthetizing and tranquilizing large animals. Today, it’s sold as an illicit drug. (Government of Canada, 2018)

PCP is considered both a hallucinogen and a sedative/tranquilizer. PCP is classified as an arylcycloalkylamine, a type of hallucinogen that is known for its dissociative properties. Ketamine is another example of drug that would fall within this category (CAMH, 2011).

How does it work?

When PCP is smoked, snorted, injected, or ingested, it acts on the brain to produce mind-altering effects. PCP is a noncompetitive NMDA (N-methyl-D-aspartate) receptor antagonist and glutamate receptor antagonist, which also interacts with other receptor sites, and may have effects on dopamine, opioid, and nicotinic receptors (Anderson, 2018). PCP acts on many parts of the central nervous system, and as such, is poorly understood.

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What does it look like?

In its pure form, PCP is a white crystalline powder that has a bitter taste. Sometimes PCP powder can be pale, yellowish, tan, or brown. It can be mixed with dyes and can be sold in a variety of forms, such as liquid, tablets, capsules, and coloured powders (Government of Canada, 2018).

PCP is most often consumed via liquid form by being added to another drug, such as a cigarette, joint, or other leafy materials or herbs (known as embalming or “getting wet”) (Erowid, 2019).

Is there a safe dose?

Under prohibition, there is no safe dose of PCP. While PCP can be very dangerous on its own, the risk increases in the illicit market, where drugs are of unknown potency and quality and are usually cut and contaminated with other potentially harmful substances.

The precise dosage can vary greatly, and the neurotoxic effects of PCP provide a limited range for an optimal/safe dose. A small/light dose is typically 3-5mg and a “normal” dose would be considered anywhere from 5-10mg. A dose of 20mg or more can cause seizures, coma, and death (Journey & Bentley, 2019).

General effects tend to come on quickly depending on the route of administration. PCP usually takes 2-20 minutes on the come-up, gradually peaks after 1-2 hours, plateaus for 2 hours, then comes down over 24 hours. Once near baseline, residual effects can be felt for 24 hours afterward, lending to an “afterglow” or hangover (DanceSafe, 2019).

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Effects      

PCP causes a variety of desirable and undesirable mental and physical effects.

Mental Effects include:

  • Dissociation from the user’s own body and environment: Feeling detached, distant, and estranged from surroundings.

  • Feelings of superior strength and invincibility/invulnerability

  • Hallucinations (auditory and visual)

  • Feeling ‘high’, sense of wellbeing, relaxation, and heightened sensory experiences

  • Feeling energetic, euphoric, talkative, giggly, and lively

  • Feeling anxious, fearful and/or tense

  • Paranoia, feelings of impending doom, and flashbacks

  • Feeling sleepy or hazy

  • Difficulty speaking

Physical effects include:

  • Red eyes and flushed skin

  • Dry mouth and throat

  • Irritated respiratory system (when smoking)

  • Increase in appetite

  • Dizziness, nausea, and vomiting

  • Elevated heart rate

  • Decrease in blood pressure

  • Drowsiness or restlessness

  • Numbness in extremities

  • Inability to feel pain

High doses of PCP can lead to seizures, coma, damage to the skeletal muscles, and death.

Side effects and cautions

PCP has been known to have many different side effects that have been highly publicized in the media. These include:

  • High body temperature: PCP can cause dramatic rises in body temperature, which can result in the user to take off all of their clothes in response to this.

  • Dangerous behaviour: The drug can cause the user to experience a toxic psychosis, resulting in aggressive or hostile behaviour, paranoia, delusional thinking and auditory hallucinations. The aggressive and hostile behaviour can result in violent outbursts by the user, towards themselves or others.

  • Injury: People high on PCP may not be able to feel pain and so can be at risk for self-injury

Drug Interactions

Ingesting PCP with other central nervous system (CNS) depressants, such as alcohol, tranquilizers, or opiates, can lead to coma.

Long-Term Effects

People who use PCP may experience ongoing flashbacks, hallucinations, and toxic psychosis—which may appear similar to schizophrenia. Long-term effects can last up to a year and include (Medical News Today, 2017):

  • Stuttering and difficulty speaking

  • Problems with reasoning and memory

  • Anxiety and depression

  • Suicidal thoughts

  • Social isolation and withdrawal

  • Flashbacks

Addiction

Psychological dependence on PCP can develop with regular use and if a person typically uses large doses. In these instances, addiction, mental health, and social stigma can make it hard to function socially and financially, leading to further complications.

Therapeutic uses?

There are no known therapeutic uses for PCP. While PCP was initially synthesized as an anesthetic and tranquilizer for humans and animals, its use was discontinued when studies revealed that PCP caused severe delusions, anxiety, and agitation.

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Harm Reduction Tips

to reduce the possible harms of PCP, the following is suggested:

  • Don’t mix PCP with other drugs. Since PCP is a sedative, it should not be consumed in combination with other depressants (such as alcohol or opioids).

  • Always start with a low dose. You can always use more of the drug if you have taken too small of a dose, but you can’t take less of a larger dose you have already consumed.

  • Use with a buddy and in a safe environment. If you must use alone, let a friend know that you’re using and have them check up on you.

  • Be mindful of your mental health. If you or members of your biological family have a history of mental health challenges, it is advised to take extra caution with PCP. This is because PCP has neurotoxic properties that can cause certain people to experience psychosis.

References

Anderson, L. (2014). PCP (Phencyclidine). Retrieved from www.drugs.com/illicit/pcp.html.

DanceSafe. (2019). PCP. Retrieved from https://dancesafe.org/pcp/

Erowid. (2013). PCP (Phencyclidine). Retrieved from www.erowid.org/chemicals/pcp/.

Health Canada. (2018). PCP. Retrieved from www.canada.ca/en/health-canada/services/substance-use/controlled-illegal-drugs/pcp.html?wbdisable=true.

Journey, J. & Bentley, T. (2019). Phencyclidine (PCP) Toxicity. StatPearls Publishing. Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK507865/

Medical News Today. (2017). What is phencyclidine (PCP), or angel dust?. Retrieved from https://www.medicalnewstoday.com/articles/305328.php

Image sources

Banner: PCP powder. (2019). iStock. Promises Treatment Centers. Retrieved from https://www.promises.com/blog/facts-about-pcp/

PCP pills. (2019). Serenity Knolls Treatment Center. Retrieved from https://www.serenityknolls.com/addiction/pcp/causes-effects/

PCP powder. (2019). Ontario Drug Rehabs. Retrieved from https://ontariodrugrehabs.com/drugs/pcp/