Ketamine is a dissociative anesthetic that is used in human anesthesia and veterinary medicine. It is also a hallucinogen that causes a person to feel detached from reality. Ketamine is referred to as a “dissociative anesthetic hallucinogen” because it makes patients feel detached from their pain and environment. It is an injectable, short-acting anesthetic for use in humans and animals. Ketamine can induce a state of sedation, immobility, relief from pain, and amnesia. It is also abused for the dissociative sensations and hallucinogenic effects. Ketamine is found by itself or often in combination with MDMA, amphetamine, methamphetamine, or cocaine. Ketamine is a controlled substance and is illegal to abuse. It is a Schedule III substance under the Controlled Substances Act. Some common street names for ketamine include Special K, K, cat valium, and vitamin K.