Toxicology studies the damaging effects caused by a chemical substance to living organisms. This book on toxicology serves as an important source of information about toxins and toxicity levels. Toxicology studies fundamental determinants of poisoning such as level of dosage, route of entry and the vital statistics of the person exposed to the substance. Contents in the text have been compiled keeping in mind the high level of research that takes place in this field. This book includes contributions of experts and scientists which will provide innovative insights into this field. It attempts to assist those with a goal of delving into the field of toxicology.