Jason White is Professor of Pharmacology and Head, School of Pharmacy and Medical Sciences, University of South Australia. He has published extensively in the pharmacology of addictive drugs, particularly opioids and stimulants, and in the treatment of drug and alcohol dependence. He has experience in the management of alcohol and drug problems and in the provision of expert evidence related to drug effects in civil and criminal matters. He is currently Co-Chair of the WHO Expert Committee on Drug Dependence.