Interest in the field of medical toxicology has grown rapidly, but the medical literature lacks an authoritative toxicology reference work dedicated to natural substances and drugs of abuse. This two-volume set combines <i>Medical Toxicology of Natural Substances</i> and <i>Medical Toxicology of Drugs Abuse</i> to deliver an in-depth, sub-specialty, readily accessible reference on these topics. Professionals in diverse fields, who typically do not need most of the information in a general medical toxicology book, can quickly apply the contents of these volumes to searchable databases and other electronic venues.