A Message from Dr. William R. Sawyer
Chief Toxicologist, TCAS, LLC
"Pharmacology and toxicology are similar in that both require an understanding
of biochemistry. However, toxicology focuses upon the adverse health effects of a chemical
substance rather than the efficacy of the drug itself."
This is an informational and instructional website devoted to toxicology. It presents
both original and edited public-domain content compiled as a useful educational resource.
References and footnotes have been included wherever possible and image sources
have been cited where appropriate. Although most pages can be printed or downloaded
as PDF files (and we encourage you to make constructive use of our information),
this website is copyrighted and material may only be reproduced and/or
distributed with prior permission from TCAS, LLC.