Which of the following is NOT classified as a hallucinogen?

Cocaine is not classified as a hallucinogen. Instead, it is a powerful stimulant that affects the central nervous system. While it can produce feelings of euphoria and increase energy levels, it does not typically alter perception or create hallucinations, which are the defining characteristics of hallucinogenic substances.

In contrast, substances like PCP, LSD, and peyote are well-known hallucinogens, meaning they can significantly change an individual's sensory perception, mood, and cognitive processes. PCP, originally developed as an anesthetic, can produce dissociative effects and hallucinations. LSD is a potent hallucinogen known for causing profound changes in thought and perception. Peyote, which contains the psychoactive compound mescaline, is also a hallucinogen that induces visual and emotional changes.

Understanding these classifications helps differentiate between substances based on their effects on the human brain and body, which is crucial for handling cases related to drug offenses or substance abuse correctly.