When mixed with marijuana, it is called crystal supergrass and killer joints. PCP turns up on the illicit drug market in a variety of tablets, capsules, and colored powders. When it is smoked, PCP is often applied to a leafy material such as mint, parsley, oregano, tobacco or marijuana. Many people who use PCP may do it unknowingly because PCP is often used as an additive and can be found in marijuana, LSD and methamphetamine. At low to moderate doses, physiological effects 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 occurs.
Generalized numbness of the extremities and muscular incoordination may also occur. Psychological effects include distinct changes in body awareness, similar to those associated with alcohol intoxication. At high doses, there is a drop in blood pressure, pulse rate, and respiration. Nausea, vomiting, blurred vision, drooling, loss of balance, and dizziness may accompany this. Psychological effects at high doses include illusions and hallucinations.