Ketamine is most often used legally as an anesthetic by veterinarians and doctors. Recent research suggests that ketamine may also be useful in treating alcoholism, heroin addiction, migraines, and depression. Ketamine is a highly addictive drug that results in a psychological state of separation between the self and reality. Its effects include out of body experiences, feeling dreamy, a sense of vertigo, or reduced sensations. Ketamine is usually produced in liquid form, but can also be made into white crystals or a powder that is physically similar to cocaine. It can be snorted, taken orally, smoked with marijuana, or injected into muscle, and is often used along with other drugs like ecstasy, heroin, or cocaine. Access to ketamine is limited because it is a physician-prescribed drug.