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Access to the eBook is limited to the first individual who redeems the PIN, located on the inside cover of this book, at studentconsult.inkling.com and may not be transferred to another party by resale, lending, or other means. 2015v1.0 Aulton’s Pharmaceutics The Design and Manufacture of Medicines This page intentionally left blank Aulton’s Pharmaceutics The Design and Manufacture of Medicines FIFTH EDITION Edited by Michael E. Aulton BPharm PhD FAAPS FSP FRPharmS Emeritus Professor, De Montfort University, Leicester, UK Kevin M. G. Taylor BPharm PhD FRPharmS Professor of Clinical Pharmaceutics, UCL School of Pharmacy, London, UK Edinburgh London New York Oxford Philadelphia St Louis Sydney Toronto 2018 © 2018 Elsevier Ltd. All rights reserved. First edition 1988 Second edition 2002 Third edition 2007 Fourth edition 2013 Fifth edition 2018 No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Details on how to seek permission, further information about the publisher’s permissions policies, and the publisher’s arrangements with organizations such as the Copyright Clearance Center and the Copyright Licensing Agency can be found at https://www.elsevier.com/permissions. This book and the individual contributions contained in it are protected under copyright by the publisher (other than as may be noted herein). Notices Knowledge and best practice in this field are constantly changing. As new research and experience broaden our understanding, changes in research methods, professional practices, or medical treatment may become necessary. Practitioners and researchers must always rely on their own experience and knowledge in evaluating and using any information, methods, compounds, or experiments described herein. In using such information or methods, they should be mindful of their own safety and the safety of others, including parties for whom they have a professional responsibility. With respect to any drug or pharmaceutical products identified, readers are advised to check the most current information provided (1) on procedures featured or (2) by the manufacturer of each product to be administered to verify the recommended dose or formula, the method and duration of administration, and contraindications. It is the responsibility of practitioners, relying on their own experience and knowledge of their patients, to make diagnoses, to determine dosages and the best treatment for each individual patient, and to take all appropriate safety precautions. To the fullest extent of the law, neither the publisher nor the authors, contributors, or editors assume any liability for any injury and/or damage to persons or property as a matter of product liability, negligence, or otherwise, or from any use or operation of any methods, products, instructions, or ideas contained in the material herein. ISBN 978-0-7020-7005-1 International Edition 978-0-7020-7003-7 Printed in China Last digit is the print number: 9 8 7 6 5 4 3 2 1 Content Strategist: Pauline Graham Content Development Specialist: Fiona Conn Project Manager: Andrew Riley Design: Christian Bilbow Illustration Manager: Amy Faith Heyden Marketing Manager: Deborah Watkins The publisher’s policy is to use paper manufactured from sustainable forests Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .viii Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi What is pharmaceutics? Michael E. Aulton and Kevin M. G. Taylor 1 1 Design of dosage forms Peter York 6 PART 1 Scientific principles of dosage form design 2 Dissolution and solubility Michael E. Aulton 18 3 Properties of solutions Michael E. Aulton 37 4 Surfaces and interfaces Graham Buckton 47 5 Disperse systems David Attwood 60 6 Rheology Christopher Marriott 93 7 Kinetics Gareth R. Williams 114 PART 2 Particle science and powder technology 8 Solid-state properties Graham Buckton 128 9 Particle size analysis Kevin M. G. Taylor 140 10 Particle size reduction and size separation Michael E. Aulton 158 11 Mixing Andrew M. Twitchell 172 12 Powder flow Michael E. Aulton 189 PART 3 Pharmaceutical microbiology and sterilization 13 Fundamentals of microbiology Geoffrey W. Hanlon 201 14 Pharmaceutical applications of microbiological techniques Norman A. Hodges 227 15 Action of physical and chemical agents on microorganisms Geoffrey W. Hanlon and Norman A. Hodges 250 16 Principles of sterilization Susannah E. Walsh and Jean-Yves Maillard 268 17 Sterilization in practice Jean-Yves Maillard and Susannah E. Walsh 278 PART 4 Biopharmaceutical principles of drug delivery 18 Introduction to biopharmaceutics Marianne Ashford 296 19 Gastrointestinal tract – physiology and drug absorption Marianne Ashford 300 20 Bioavailability – physicochemical and dosage form factors Marianne Ashford 319 v Contents 21 Assessment of biopharmaceutical properties Marianne Ashford 339 22 Dosage regimens Soraya Dhillon, Nkiruka Umaru and John H. Collett 363 PART 5 Dosage form design and manufacture 23 Pharmaceutical preformulation Simon Gaisford 380 24 Solutions Sudaxshina Murdan 407 25 Clarification Andrew M. Twitchell 417 26 Suspensions Susan A. Barker 427 27 Emulsions and creams Gillian M. Eccleston 446 28 Powders, granules and granulation Michael E. Aulton 476 29 Drying Michael E. Aulton and Satyanarayana Somavarapu 498 30 Tablets and compaction Göran Alderborn and Göran Frenning 517 31 Modified-release oral drug delivery Emma L. McConnell and Abdul W. Basit 564 32 Coating of tablets and multiparticulates Stuart C. Porter 580 33 Hard capsules Brian E. Jones 597 34 Soft capsules Keith G. Hutchison and Josephine Ferdinando 612 35 Dissolution testing of solid dosage forms Ana Cristina Freire and Abdul W. Basit 626 36 Parenteral drug delivery Robert Lowe 638 37 Pulmonary drug delivery Kevin M. G. Taylor 653 38 Nasal drug delivery Gary P. Martin and Alison B. Lansley 671 39 Ocular drug delivery Hala Fadda, Ashkan Khalili, Peng Tee Khaw, and Steve Brocchini 690 40 Topical and transdermal drug delivery Adrian C. Williams 715 41 Rectal and vaginal drug delivery Kalliopi Dodou 739 42 The formulation and manufacture of plant medicines G. Brian Lockwood 758 43 Delivery of biopharmaceuticals Ijeoma F. Uchegbu and Andreas G. Schätzlein 769 44 Pharmaceutical nanotechnology and nanomedicines Yvonne Perrie 784 45 Design and administration of medicines for paediatric and geriatric patients Catherine Tuleu, Mine Orlu and David Wright 804 Part 6 Packaging and stability of pharmaceutical products 46 Packaging Sudaxshina Murdan 820 47 Chemical stability in dosage forms Andrew R. Barnes 836 48 Microbial contamination, spoilage and preservation of medicines Norman A. Hodges 850 49 Product stability and stability testing Paul Marshall 862 Self Assessment Please check your eBook at https://studentconsult.inkling. com/ for self-assessment questions. See inside cover for registration details. Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .886 vi Preface This is the fifth edition of Aulton’s Pharmaceutics: written by a new generation of experts. The new The Design and Manufacture of Medicines. The first authorship reflects contemporary knowledge and edition was published in 1988, the second in 2002, thinking in pharmaceutics. the third in 2007 and the fourth in 2013. The pedigree The fourth edition of this book saw major restruc- of the book is, however, actually much older. It was turing and revision of the text, with the addition of originally known as Tutorial Pharmacy (which itself many new chapters and deletion of others. In this went to six editions) and was initially edited by John edition, the changes have been less radical, but neces- Cooper and Colin Gunn, and later by Sidney Carter. sary and important nonetheless. Every chapter has Professor Mike Aulton and Professor Kevin Taylor received detailed attention and has been revised and continue their editing role and have identified new updated appropriately to reflect modern thinking and authors and fresh subject matter for this new edition. current university curricula worldwide. Some of the The philosophy of this fifth edition remains basic science remains virtually unchanged – and will unchanged from that of previous editions, i.e. it is always do so – but other areas, particularly biophar- intentionally designed and written for newcomers to maceutics and some areas of drug delivery, have the design of dosage forms (drug products). Other changed significantly in recent years. Several new expert texts can take you into much greater detail authors have been included in this edition to ensure for each of the subject areas considered here, once the comprehensive nature and currency of this text. you have mastered these basics. The subject matter All purchasers of the print version of this new of the book remains, in essence, the same but the edition receive the enhanced ebook, which can be detail has changed significantly, because pharmaceutics used online or downloaded to their mobile device has changed. Since the last edition there have been for convenient, any time access. The ebook includes changes in the way that dosage forms are designed more than 400 self-assessment questions, based on and manufactured and drugs are delivered. These the book, to check understanding and to help with developments are reflected in this new edition. any examination preparation. The involvement of a wide range of authors We wish you well in your studies if you are an continues in this edition, all authors being a recognized undergraduate student, or with your career if you expert in the field on which they have written. Just are working in industry, medicines regulation or the as importantly, each author has experience of impart- hospital service. We sincerely hope that this book ing that information to undergraduate pharmacy and helps you with your understanding of pharmaceutics pharmaceutical science students, and to practitioners – the science of the design and manufacture of in the pharmaceutical and associated industries and medicines. those working in technical services within hospital M. E. Aulton pharmacy who are new to the subject. Many authors K. M. G. Taylor from the previous edition remain as they are still world leaders in their field. Other chapters have been vii Contributors Göran Alderborn PhD Soraya Dhillon BPharm, PhD Professor in Pharmaceutical Technology, Uppsala Professor and Dean, Life and Medical Sciences, University, Uppsala, Sweden University of Hertfordshire, Hatfield, UK Marianne Ashford BSc (Pharm), PhD Kalliopi Dodou BSc (Pharm), PhD Associate Principal Scientist Drug Delivery, AstraZeneca, Reader, Pharmacy Health and Wellbeing, University of Macclesfield, UK Sunderland, Sunderland, UK David Attwood BPharm, PhD, DSc, CChem, FRSC Gillian M. Eccleston BSc, PhD Emeritus Professor, University of Manchester, Professor of Pharmacy, University of Strathclyde, Manchester, UK Glasgow, UK Michael E. Aulton BPharm, PhD, FAAPS, FSP, FRPharmS Hala Fadda MPharm, PhD Emeritus Professor, De Montfort University, Leicester, Associate Professor of Pharmaceutics, College of UK Pharmacy and Health Sciences, Butler University, Indianapolis, USA Susan A. Barker BPharm, PhD Senior Lecturer in Pharmaceutics, UCL School of Josephine Ferdinando BSc, MSc, PhD Pharmacy, London, UK Senior Vice President, Nonclinical Development, Shire Research and Development, Basingstoke, UK Andrew R. Barnes BSc (Pharm), PhD Quality Assurance Specialist, Pharmacy Quality Ana Cristina Freire PhD Assurance Specialist Services, Hellesdon Hospital, Development Manager, Kuecept, Potters Bar, UK Norwich, UK Göran Frenning Abdul W. Basit BPharm, PhD Professor in Pharmaceutical Physics, Uppsala University, Professor of Pharmaceutics, UCL School of Pharmacy, Uppsala, Sweden London, UK Simon Gaisford BSc, MSc, PhD Steve Brocchini BA, PhD Professor in Pharmaceutics, UCL School of Pharmacy, Professor of Chemical Pharmaceutics, UCL School of London, UK Pharmacy, London, UK Geoffrey W. Hanlon BSc, PhD Graham Buckton BPharm, PhD, DSc Emeritus Professor of Pharmaceutical Microbiology, Emeritus Professor of Pharmaceutics, UCL School of University of Brighton, Brighton, UK Pharmacy, London, UK Norman A. Hodges MPharm, PhD John H. Collett PhD, DSC, FRPharmS Principal Lecturer in Pharmaceutical Microbiology, Professor of Pharmaceutics, University of Manchester, School of Pharmacy and Biomolecular Sciences, Manchester, UK University of Brighton, Brighton, UK viii