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To use or not to use: an update on licit and illicit ketamine use

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Author(s): Jih-Heng Li | Balasingam Vicknasingam | Yuet-wah Cheung | et al

Journal: Substance Abuse and Rehabilitation
ISSN 1179-8467

Volume: 2011;
Issue: default;
Start page: 11;
Date: 2011;
Original page

ABSTRACT
Jih-Heng Li1, Balasingam Vicknasingam2, Yuet-wah Cheung3, Wang Zhou4, Adhi Wibowo Nurhidayat5, Don C Des Jarlais6, Richard Schottenfeld71College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan; 2National Centre for Drug Research, Universiti Sains Malaysia, Malaysia; 3Department of Sociology, The Chinese University of Hong Kong, Hong Kong, China; 4Wuhan Center for Disease Control and Prevention, Wuhan, China; 5Drug Dependence Hospital RSKO, Jakarta, Indonesia; 6Beth Israel Medical Center, New York, NY; 7School of Psychiatry, Yale University, CT, USAAbstract: Ketamine, a derivative of phencyclidine that was developed in the 1960s, is an anesthetic and analgesic with hallucinogenic effects. In this paper, the pharmacological and toxicological effects of ketamine are briefly reviewed. Ketamine possesses a wide safety margin but such a therapeutic benefit is somewhat offset by its emergence phenomenon (mind-body dissociation and delirium) and hallucinogenic effects. The increasing abuse of ketamine, initially predominantly in recreational scenes to experience a “k-hole” and other hallucinatory effects but more recently also as a drug abused during the workday or at home, has further pushed governments to confine its usage in many countries. Recently, urinary tract dysfunction has been associated with long-term ketamine use. In some long-term ketamine users, such damage can be irreversible and could result in renal failure and dialysis. Although ketamine has not yet been scheduled in the United Nations Conventions, previous studies using different assessment parameters to score the overall harms of drugs indicated that ketamine may cause more harm than some of the United Nations scheduled drugs. Some countries in Southeast and East Asia have reported an escalating situation of ketamine abuse. Dependence, lower urinary tract dysfunction, and sexual impulse or violence were the most notable among the ketamine-associated symptoms in these countries. These results implied that the danger of ketamine may have been underestimated previously. Therefore, the severity levels of the ketamine-associated problems should be scrutinized more carefully and objectively. To prevent ketamine from being improperly used and evolving into an epidemic, a thorough survey on the prevalence and characteristics of illicit ketamine use is imperative so that suitable policy and measures can be taken. On the other hand, recent findings that ketamine could be useful for treating major depressive disorder has given this old drug a new impetus. If ketamine is indeed a remedy for treating depression, more research on the risks and benefits of its clinical use will be indispensable.Keywords: ketamine, psychedelic effects, urinary tract dysfunction, anti-depressant, cognitive impairment, epidemiology
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