Medical toxicology: a primer for the medicolegal age.

The medicolegal medical toxicologist is described: What they do, what toxicology is, how the toxicologist moves in a world of regulations, chemicals, differential diagnosis, and treatment of poisoning; his or her knowledge as an expert witness in evaluation of serious adverse drug reactions, medical malpractice, and poisoning cases; and the toxicologist's awareness of the role of alcohol, the problem of causation of death, and the limitations of the laboratory are discussed.