NCIt definition : Toxicology is the branch of pharmacology that deals with the nature and effects and
treatments of poisons.;
Alternative definition : CDISC: Toxicology is the study of the adverse effects of chemical, physical or biological
agents on people, animals, and the environment.; NCI-GLOSS: The study of poisons, including the source, effect, and treatment of poisoning.
It is a branch of pharmacology (the study of drugs).;