Physical chemistry is the basis of pharmaceutical formulation and processing and is fundamental to understanding the complexities of drug delivery and absorption. Physicochemical Principles of Pharmacy goes beyond the introductory aspects of physical pharmacy to show how basic physicochemical principles are essential to an understanding of every aspect of drug action, from the design of dosage forms to the sites of action in the body. Chapters are organised logically, with visual representations to aid the understanding of difficult concepts. The fifth edition of this well-established textbook has been thoroughly revised. Changes include: a new chapter on pharmaceutical nanotechnology; key learning points; more worked examples of clinical calculations; and clearer distinction between the basic text and more complex theory to facilitate ease of use. Written by experienced academics, it is essential reading for undergraduate and postgraduate students in pharmacy and pharmaceutical sciences.