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Drug Descriptions Advanced Pain Treatment

WACK

Drug Name: Phencyclidine
Street Name: PCP, Angel Dust, Supergrass, Boat, Tic Tac, Zoom, Shermans, Wack

Phencyclidine (PCP) was developed in the 1950s as an intravenous anesthetic but, due to the side effects of confusion and delirium, its development for human medical use was discontinued.

In its pure form, it is a white crystalline powder that readily dissolves in water or alcohol and has a distinctive bitter chemical taste.  On the illicit drug market, PCP contains a number of contaminants as a result of makeshift manufacturing, causing the color to range from tan to brown, and the consistency to range from powder to a gummy mass.  It is available in a variety of tablets, capsules, and colored powders, which are either taken orally or snorted.  The liquid form of PCP is actually PCP base dissolved most often in ether, a highly flammable solvent. For smoking, PCP is typically sprayed onto leafy material such as mint, parsley, oregano, or marijuana.

PCP is illicitly marketed under a number of street names including Angel Dust, Hog, Lovely, Wack, Embalming Fluid, and Rocket Fuel, which reflect the range of bizarre and volatile effects.  Supergrass and Killer Joints are names that refer to PCP combined with marijuana.

Effects of Use

A moderate amount of PCP often causes users to feel detached, distant, and estranged from their surroundings. Numbness of the extremities, slurred speech, and loss of coordination may be accompanied by a sense of strength and invulnerability. A blank stare, rapid and involuntary eye movements, and an exaggerated gait are among the more observable effects. Auditory hallucinations, image distortion, severe mood disorders, and amnesia may also occur. In some users, PCP may cause acute anxiety and a feeling of impending doom; in others, paranoia and violent hostility, and in some, it may produce a psychoses indistinguishable from schizophrenia. Many believe PCP to be one of the most dangerous drugs of abuse.

Physiological effects of PCP include a slight increase in breathing rate and a more pronounced rise in blood pressure and pulse rate. Respiration becomes shallow, and flushing and profuse sweating.

At high doses of PCP, there is a drop in blood pressure, pulse rate, and respiration. This may be accompanied by nausea, vomiting, blurred vision, flicking up and down of the eyes, drooling, loss of balance, and dizziness. High doses of PCP can also cause seizures, coma, and death (though death more often results from accidental injury or suicide during PCP intoxication). Psychological effects at high doses include illusions and hallucinations.

Health Hazards

PCP is addictive and its use often leads to psychological dependence, craving, and compulsive PCP-seeking behavior.  Users of PCP report memory loss, difficulties with speech and learning, depression, and weight loss. These symptoms can persist up to a year after cessation of PCP use. PCP has sedative effects, and interactions with other central nervous system depressants, such as alcohol and benzodiazepines, can lead to coma or accidental overdose.  Use of PCP among adolescents may interfere with hormones related to normal growth and development.

Many PCP users are brought to emergency rooms because of PCP's unpleasant psychological effects or because of overdoses.  In a hospital or detention setting, they often become violent or suicidal, and are very dangerous to themselves and to others. They should be kept in a calm setting and should not be left alone.

Extent of Use

According to the 1996 National Household Survey on Drug Abuse (NHSDA),  3.2 percent of the population aged 12 and older have used PCP at least once. Lifetime use of PCP was higher among those aged 26 through 34 (4.2 percent) than for those 18 through 25 (2.3 percent) and those 12 through 17 (1.2 percent).

The 1997 Monitoring the Future Study (MTF) shows that use of PCP by high school seniors has declined steadily since 1979, when 7.0 percent of seniors had used PCP in the year preceding the survey. In 1997, however, 2.3 percent of seniors used PCP at least once in the past year, up from a low of 1.2 percent in 1990. Past month use among seniors decreased from 1.3 percent in 1996 to 0.7 percent in 1997

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Visit National Library of Medicine Drug Information © 2005 National Library of Medicine (NLM) & National Institutes of Health (NIH)

 

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