Question

Which of the following is not dissociative?

Answer 1

Answer: B. Mescaline

Mescaline is not a dissociative drug but a psychedelic alkaloid of phenethylamine class that has hallucinogenic effects. 

Meanwhile, phencyclidine (PCP), ketamine and dextromethorphan at high doses is classified as dissociative general anesthetic that distort perceptions of sight and sound and produce feelings of detachment from the environment and self. Other effects include analgesia, hallucinations, mania and amnesia.

Answer 2

Dissociative drugs would interfere one's sight, sound and would create feeling of detachment from the environment and from one's self. There are two drugs namely PCP and ketamine and used as general anesthetics during surgery. Dextromethorphan can also produce effects similar to ketamine and PCP thus answer is B. Mescaline.