The Evidence Base for the Classification of Drugs
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The Evidence Base for the Classification of Drugs Ruth Levitt, Edward Nason, Michael Hallsworth Prepared for the UK House of Commons Committee on Science and Technology The research described in this report was prepared for the UK House of Commons Select Committee on Science and Technology. The RAND Corporation is a nonprofit research organization providing objective analysis and effective solutions that address the challenges facing the public and private sectors around the world. RAND’s publications do not necessarily reflect the opinions of its research clients and sponsors. R® is a registered trademark. © Parliamentary Copyright House of Commons 2006 All rights reserved. No part of this book may be reproduced in any form by any electronic or mechanical means (including photocopying, recording, or information storage and retrieval) without permission in writing from the copyright holder. Applications for reproduction should be made to the Licensing Department, HMSO, St. Clements House, 2-16 Colegate, Norwich NR3 1BQ. Published 2006 by the RAND Corporation 1776 Main Street, P.O. Box 2138, Santa Monica, CA 90407-2138 1200 South Hayes Street, Arlington, VA 22202-5050 201 North Craig Street, Suite 202, Pittsburgh, PA 15213-1516 Newtonweg 1, 2333 CP Leiden, The Netherlands Westbrook Centre, Milton Road, Cambridge CB4 1YG, United Kingdom Uhlandstraße 14, 10623 Berlin, Germany RAND URL: http://www.rand.org/ RAND Europe URL: http://www.rand.org/randeurope To order RAND documents or to obtain additional information, contact Distribution Services: Telephone: (310) 451-7002; Fax: (310) 451-6915; Email: [email protected] Preface This report, prepared for the House of Commons Select Committee on Science and Technology, presents the results of four case studies examining the evidence base for the classification of illegal drugs in the context of the 1971 Misuse of Drugs Act. The objective is to identify the main evidence base on the selected drugs and to examine the use of that evidence in classifying each drug. The report also briefly examines the classification systems in three other countries, to provide a context through other drug classification systems. The report is divided into three sections: i. an introduction describing the history of drug classification in the UK and general issues surrounding the types of evidence used in classifying drugs; ii. four individual drug case studies (amphetamines and ecstasy, cocaine, magic mushrooms and cannabis) examining the evidence of physical, social, psychological and economic harm associated with each drug and the use of evidence in government policy; iii. an international learning section examining the classification systems in three other countries (the USA, the Netherlands and Sweden) and the penalties and treatment regimes associated with them. This report does not aim to provide a comprehensive review of all the evidence available for the drugs or countries studies; rather it provides an overview of the evidence on drugs and classification systems. This will assist the Members of the Committee to direct questions to witnesses in areas of specific interest to them for more in depth view information. This report may also be of wider interest to parliament and others. RAND Europe is an independent not-for-profit policy research organisation that serves the public interest by improving policymaking and informing public debate. Its clients are European governments, institutions, and firms with a need for rigorous, impartial multidisciplinary analysis. This report has been peer-reviewed in accordance with RAND’s quality assurance standards (for more information, see http://www.rand.org/about/standards/) and therefore may be represented as a RAND Europe product. iii The evidence base for the classification of drugs RAND Europe For more information about RAND Europe or this document, please contact: Dr. Jonathan Grant Dr. Ruth Levitt Director Research Leader RAND Europe Cambridge RAND Europe Cambridge Westbrook Centre Westbrook Centre Milton Road Milton Road Cambridge. CB4 1YG. UK Cambridge. CB4 1YG. UK Tel: +44 (0)1223 353 329 Tel: +44 (0)1223 353 329 Fax: +44 (0)1223 358 845 Fax: +44 (0)1223 358 845 Email: [email protected] Email: [email protected] iv Contents Preface........................................................................................................................ iii Table of Figures...........................................................................................................ix Table of Tables............................................................................................................xi Executive Summary .................................................................................................. xiii Drug case studies .......................................................................................................xiv Amphetamines and ecstasy ..............................................................................xiv Cocaine and crack ............................................................................................xv Cannabis ..........................................................................................................xv Magic mushrooms............................................................................................xv CHAPTER 1 Introduction to drug classification...................................................1 1.1 Drugs legislation................................................................................................ 1 1.2 Why examine drug classification? ...................................................................... 3 1.3 History of legislation ......................................................................................... 5 1.4 Drug harm ........................................................................................................ 7 1.5 Prevalence of drug use in the UK....................................................................... 8 1.6 Drugs and crime................................................................................................ 9 1.6.1 Punishment versus treatment................................................................ 9 1.7 Drugs education.............................................................................................. 10 1.8 Economic issues .............................................................................................. 11 CHAPTER 2 Amphetamines and ecstasy.............................................................13 2.1 Classification, penalties and street names......................................................... 13 2.1.1 Amphetamines.................................................................................... 13 2.1.2 Ecstasy................................................................................................ 14 2.2 Taking amphetamines and ecstasy ................................................................... 14 2.3 Scientific issues................................................................................................ 16 2.4 Other health issues .......................................................................................... 18 2.5 Social issues..................................................................................................... 19 2.6 Economic issues .............................................................................................. 19 2.7 Government response to evidence and recommendations ................................ 20 CHAPTER 3 Cocaine..........................................................................................23 3.1 Classification, penalties and street names......................................................... 23 3.1.1 Cocaine .............................................................................................