Classification
At high doses, dextromethorphan is classified as a dissociative general anesthetic and hallucinogen, similar to the controlled substances ketamine and phencyclidine (PCP). Also like those drugs, dextromethorphan is an NMDA receptor antagonist. Dextromethorphan generally does not produce withdrawal symptoms characteristic of physically addictive substances, but there have been cases of psychological addiction.
Read more about this topic: Recreational Use Of Dextromethorphan