Ketamine is an NMDA receptor antagonist, long used for its anesthetic and pain reducing properties, but has more recently demonstrated efficacy for treating depression. Evidence is also emerging for other psychiatric indications including posttraumatic stress disorder, anxiety disorders, obsessive compulsive disorder, and to support psychotherapy. In this context, there is greater demand for...
Twenty-one recreational polydrug users (age range: 17–34 years), were recruited into the study using the 'snowball' technique (Solowij et al., 1992). All had used MDMA (3,4-methylenedioxymethamphetamine, or 'Ecstasy'), LSD (lysergic acid diethylamide), and amphetamine, on different occasions. They completed modified Profile of Mood States Questionnaires, to indicate their typical feeling states...