ISBN10: 0443071454, ISBN13: 9780443071454, [publisher: Elsevier Health Sciences, United Kingdom, London] Softcover "Pharmacology" is now established as a worldwide best-selling and highly acclaimed textbook for medical and science students. In this fifth edition, as in the previous four, the approach has been not just to describe what drugs do but to emphasize the mechanisms by which they act - where possible at the cellular and molecular level. Therapeutic agents have a high rate of obsolescence and new ones appear each year. An appreciation of the mechanisms of action of the class of drugs to which a new agent belongs provides a good starting point for understanding and using the new compound intelligently. Pharmacology is a lively scientific discipline in its own right, with an importance beyond that of providing a basis for the use of drugs in therapy. The book therefore, where appropriate, includes brief coverage of the use of drugs as probes for elucidating cellular and physiological functions, even when the compounds have no clinical uses. The fifth edition retains the short summaries of relevant physiological and biochemical processes placed at the beginning of most chapters to form a basis for the subsequent discussion of pharmacological actions. As before, short sets of key points are placed in boxes throughout the text. These are not intended as comprehensive summaries but rather to highlight pharmacological information that the authors consider ...