Focusing on practical approaches to the detection of drug abuse along with investigations of drug-related deaths, this book is a comprehensive yet accessible guide to the pathology, toxicology, and pharmacology of commonly abused drugs. Containing more than 200 color photographs and microphotographs for drug identification, this fourth edition features a chapter on marijuana along with material on absinthe and the abuse of khat. This text addresses the major advances in molecular biology and toxicogenetics of cocaine and heroin toxicity. It also includes all color graphics on drug production and availability from United Nations reports.