The effects of PCP can last for 4 to 6 hours. Many believe PCP to be one of the most dangerous drugs of abuse. 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.
• Acute anxiety and a feeling of impending doom, paranoia, violent hostility, a psychoses indistinguishable from schizophrenia.

Physiological effects of low to moderate doses of PCP include: