Casarett & Doull’s Essentials of Toxicology, 4th Edition, authored by Curtis D. Klaassen, offers a concise and accessible path to understanding the fundamental concepts and principles of toxicology. This Doody’s Core Title for both 2023 and 2024 distills the essential knowledge from the renowned Casarett & Doull’s Toxicology: The Basics of Poison, a leading text for over 25 years. Reflecting the collective expertise of more than 60 distinguished contributors, this edition is designed to provide a clear, engaging, and authoritative introduction to the science and clinical practice of medical toxicology. Presented in full color, the 4th Edition features extensive updates that enhance its clinical relevance for students and newcomers to toxicology, pharmacology, pharmacy, and environmental sciences. Learning is further optimized through chapter-ending self-assessment questions and other pedagogical features, making the acquisition of knowledge more effective and efficient. Published by McGraw Hill / Medical on February 23, 2021, this foundational text, identified by ISBN-10: 1260452298 and ISBN-13: 978-1260452297, serves as an indispensable resource for building a robust understanding of toxicology.