Question: what of these drugs are considered hallucinogens?
Answer: PCP. Phencyclidine (PCP) was originally developed in the 1950s as an anesthetic for surgery. ... 
LSD. ... 
Ketamine. ... 
Mescaline. ... 
Psilocybin. ... 
Bath Salts. ... 
Salvia Divinorum. ... 
DMT.