British Medical Association Royal Pharmaceutical Society of Great Britain
British National Formulary
BNF
58 September 2009
58 ▼ bnf.org
Medicines information services
Advisory Line Tel: (0151) 252 5837 Fax: (0151) 220 3885 info@dial.org.uk
www.travax.nhs.uk (for registered users of the NHS
Information on substances currently permitted or prohibited is provided in a card supplied by UK Sport. Further information regarding medicines in sport is available from: www.uksport.gov.uk The status of a particular medicine may be checked using the Drug Information Line Tel: 0800 528 0004 Travel Immunisation Up-to-date information on travel immunisation requirements may be obtained from: National Travel Health Network and Centre (for healthcare professionals only) 0845 602 6712 (09.00–12.00 and 14.00–16.30 hours weekdays) Travel Medicine Team, Health Protection Scotland (0141) 300 1130 (14.00–16.00 hours weekdays)
Sport
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Driver and Vehicle Licensing Agency (DVLA) Information on the national medical guidelines of fitness to drive is available from:
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UK Teratology Information Service Information on drug and chemical exposures in pregnancy Tel: (0844) 892 0909 Information on drug therapy relating to dental treatment can be obtained by telephoning Liverpool (0151) 794 8117 DIAL: Paediatric Drug (Medicine) Information
Information on any aspect of drug therapy can be obtained from Regional and District Medicines Informa- tion Services. Details regarding the local services pro- vided within your Region can be obtained by telephon- ing the following numbers.
Addresses, telephone and fax numbers, and email addresses of manufacturers listed in BNF Publica- tions are shown in the Index of Manufacturers
www.ukmi.nhs.uk
United Kingdom Medicines Information Pharmacists Group (UKMIPG) website
(01382) 660 111 Extn 32351 Edinburgh (0131) 242 2920 Glasgow (0141) 211 4407 Northern Ireland Belfast (028) 9063 2032 (028) 9063 3847 Republic of Ireland Dublin Dublin 473 0589 Dublin 453 7941 Extn 2348
Southampton (023) 8079 6908/9 Wales Cardiff (029) 2074 2979 (029) 2074 2251 Scotland Aberdeen (01224) 552 316 Dundee (01382) 632 351
(020) 7188 3855 Northwick Park Hospital (020) 8869 2761 (020) 8869 3973 Newcastle (0191) 260 6198
(0151) 794 8206 London Guy’s Hospital (020) 7188 8750 (020) 7188 3849
England Birmingham (0121) 424 7298 Bristol (0117) 342 2867 Ipswich (01473) 704 431 Leeds (0113) 392 3547 Leicester (0116) 255 5779 Liverpool (0151) 794 8113/4/5/7
website Travax only) Welsh Assembly Government (029) 2082 5397 (09.00–17.30 hours weekdays) Department of Health and Social Services (Belfast) (028) 9052 0000 (weekdays) British National Formulary
BNF
58 September 2009
bnf.org Published jointly by The BNF is designed as a digest for rapid reference
BMJ Group and it may not always include all the information Tavistock Square, London WC1H 9JP, UK necessary for prescribing and dispensing. Also, less and detail is given on areas such as obstetrics, malignant RPS Publishing disease, and anaesthesia since it is expected that RPS Publishing is the wholly-owned publishing organi- those undertaking treatment will have specialist sation of the Royal Pharmaceutical Society of Great knowledge and access to specialist literature. BNF Britain
for Children should be consulted for detailed infor-
1 Lambeth High Street, London, SE1 7JN, UK mation on the use of medicines in children. The BNF should be interpreted in the light of professional
Copyright # BMJ Group and RPS Publishing 2009 knowledge and supplemented as necessary by spe- cialised publications and by reference to the product literature. Information is also available from medi-
ISBN: 978 0 85369 848 7 cines information services (see inside front cover).
ISSN: 0260-535X Printed by GGP Media GmbH, Po¨ssneck, Germany A catalogue record for this book is available from the British Library.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the copyright holder.
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RPS Publishing also supplies the BNF in digital formats suitable for standalone use or for small networks, for use over an intranet and for use on a personal digital assistant (PDA).
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Tel: 0300 123 1002 In Wales, telephone the Business Services Centre Tel: 01495 332 000 For further information on the supply of copies of the BNF to NHS organisations, see http://tinyurl.com/ 2uebpp .
Preface
Appendix 4: Pregnancy 831 Appendix 5: Breast-feeding 852 Appendix 6: Intravenous additives
27 Notes on drugs and Preparations 1: Gastro-intestinal system
37 2: Cardiovascular system
72 3: Respiratory system 150 4: Central nervous system 185 5: Infections 288 6: Endocrine system 372 7: Obstetrics, gynaecology, and urinary-tract disorders 434 8: Malignant disease and immunosup- pression 465 9: Nutrition and blood 512 10: Musculoskeletal and joint diseases 559 11: Eye 590 12: Ear, nose, and oropharynx 608 13: Skin 624 14: Immunological products and vac- cines 669 15: Anaesthesia 697 Appendixes and indices
Appendix 1: Interactions 720 Appendix 2: Liver disease
804
Appendix 3: Renal impairment
815
867
21 Drugs and sport
Appendix 7: Borderline substances
880
Appendix 8: Wound management products
and elasticated garments 911
Appendix 9: Cautionary and advisory labels
for dispensed medicines 932 Dental Practitioners’ Formulary 947 Nurse Prescribers’ Formulary
950 Non-medical prescribing 954 Index of manufacturers
955 Index 971
26 Emergency treatment of poisoning
19 Prescribing in dental practice
The BNF is a joint publication of the British Medical Association and the Royal Pharmaceutical Society of Great Britain. It is published biannually under the authority of a Joint Formulary Committee which com- prises representatives of the two professional bodies and of the UK Health Departments. The Dental Advi- sory Group oversees the preparation of advice on the drug management of dental and oral conditions; the Group includes representatives of the British Dental Association. The Nurse Prescribers’ Advisory Group advises on the content relevant to nurses.
Guidance on prescribing
The BNF aims to provide prescribers, pharmacists and other healthcare professionals with sound up-to-date information about the use of medicines. The BNF includes key information on the selection, prescribing, dispensing and administration of medicines. Medicines generally prescribed in the UK are covered and those considered less suitable for prescribing are clearly identified. Little or no information is included on medicines promoted for purchase by the public.
Information on drugs is drawn from the manufacturers’ product literature, medical and pharmaceutical litera- ture, UK health departments, regulatory authorities, and professional bodies. Advice is constructed from clinical literature and reflects, as far as possible, an evaluation of the evidence from diverse sources. The BNF also takes account of authoritative national guidelines and emer- ging safety concerns. In addition, the editorial team receives advice on all therapeutic areas from expert clinicians; this ensures that the BNF’s recommendations are relevant to practice. The BNF is designed as a digest for rapid reference and it may not always include all the information necessary for prescribing and dispensing. Also, less detail is given on areas such as obstetrics, malignant disease, and anaesthesia since it is expected that those undertaking treatment will have specialist knowledge and access to specialist literature. BNF for Children should be con- sulted for detailed information on the use of medicines in children. The BNF should be interpreted in the light of professional knowledge and supplemented as necessary by specialised publications and by reference to the product literature. Information is also available from medicines information services (see inside front cover). It is vital to use the most recent edition of the BNF for making clinical decisions. The more important changes for this edition are listed on p. xi. The BNF on the internet ( bnf.org ) includes additional information of relevance to healthcare professionals dealing with medicines. Other digital versions of the BNF—including intranet and personal digital assistant (PDA) versions—are produced in parallel with the paper version.
The BNF welcomes comments from healthcare pro- fessionals. Comments and constructive criticism should be sent to: British National Formulary, Royal Pharmaceutical Society of Great Britain, 1 Lambeth High Street, London SE1 7JN. editor@bnf.org
Contents Preface iii Acknowledgements iv How to use the BNF ix Changes for this edition xi Significant changes xi
Dose changes xi Classification changes xii
Deleted preparations xii New preparations included in this edition xiii
Late additions xiii Name changes xiv
1 General guidance
15 Prescribing for the elderly
1 Prescription writing
4 Emergency supply of medicines
6 Controlled Drugs and drug dependence
7 Adverse reactions to drugs
11 Prescribing for children
13 For detailed advice on medicines used for children
consult BNF for Children
Prescribing in palliative care
BNF 58
BNF 58
C. Adetola, N. Bansal, A. Breewood, K.L. d’Almeida,
Acknowledgements
M. Davis, C. Fischetti, S. Foad, E.H. Glover, D.T.H. Grif- fiths, T. Hamp, A. Harvey, J. Humphreys, J.M. James, The Joint Formulary Committee is grateful to indivi-
E. Laughton, A. McLaughlin, A. Melen, H.M.N. Neill, duals and organisations that have provided advice and O. Ojeleye, A. Parkin, R.G. Taljaard, and E.J. Tong pro- information to the BNF. vided considerable assistance during the production of this edition of the BNF.
The principal contributors for this edition were: U.J. Adderley, I.H. Ahmed-Jushuf, K.W. Ah-See, S.P. Alli- Xpage have provided technical assistance with the son, M.N. Badminton, T.P. Baglin, P.R.J. Barnes, D.N. Ba- editorial database and typesetting software. teman, S.L. Bloom, D. Bowsher, E.M. Brown, R.J. Buck- ley, I.F. Burgess, D.J. Burn, J.J. Coleman, R. Dinwiddie, P.N. Durrington, D.A.C. Elliman, M.D. Feher, B.G. Gaz- zard, A.M. Geretti, A.H. Ghodse, N.J.L. Gittoes, P.J. Goadsby, J. Guillebaud, D.J. Hatch, B.G. Higgins, S.H.D. Jackson, A. Jones, J.R. Kirwan, P.G. Kopelman, A.J. Krentz, T.H. Lee, D.N.J. Lockwood, M.G. Lucas, L. Luzzatto, A. MacDonald, A.G. Marson, P.D. Mason, K.E.L. McColl, G.M. Mead, E. Miller, J.M. Neuberger, D.J. Nutt, L.P. Ormerod, W.J. Penny, A.B. Provan, M.M. Ramsay, D.J. Rowbotham, J.W. Sander, J.A.T. San- doe, M. Schacter, G.J. Shortland, D.B. Silk, S.C.E. Spor- ton, M.A. Stroud, J.P. Thompson, D.A. Warrell, R.P. Walt, A.D. Weeks,
A. Wilcock, C.E. Willoughby, M.M Yaqoob. M.J. Kendall, senior medical adviser for BNF Publica- tions, has also provided valuable assistance. Expert advice on the management of oral and dental conditions was kindly provided by M. Addy, P. Coulthard, A. Crighton, M.A.O. Lewis, J.G. Meechan, N.D. Robb, R.A. Seymour, R. Welbury, and J.M. Zakr- zewska. S. Kaur provided valuable advice on dental prescribing policy. Members of the British Association of Dermatologists Therapy Guidelines Subcommittee, H.K. Bell, L.C. Ful- ler, J. Hughes, S. Hulley, J. Lear, N.J. Levell, A.J. McDo- nagh, S. Punjabi, M.J. Tidman, P.D. Yesudian, and M.F.M. Mustapa (Secretariat) have provided valuable advice. Members of the Advisory Committee on Malaria Pre- vention, B.A. Bannister, R.H. Behrens, P.L. Chiodini, F. Genasi, L. Goodyer, D. Hill, R. Jecock, G. Kassianos, D.G. Lalloo, G. Lea, G. Pasvol, M. Powell, D.V. Shingadia, D.A. Warrell, C.J.M. Whitty, and C. Lucas (Secretariat) have also provided valuable advice. The Joint British Societies’ Coronary Risk Prediction Charts have been reproduced with the kind permission of P.N. Durrington who has also provided the BNF with access to the computer program for assessing coronary and stroke risk. R. Suvarna and colleagues at the MHRA have provided valuable assistance. Correspondents in the pharmaceutical industry have provided information on new products and commented on products in the BNF. NHS Prescription Services has supplied the prices of products in the BNF. Numerous doctors, pharmacists, nurses and others have sent comments and suggestions. The BNF has valuable access to the Martindale data banks by courtesy of S. Sweetman and staff. J.E. Macintyre and staff provided valuable technical assistance. BNF Staff
Managing Editor: Knowledge Creation John Martin BPharm, PhD, MRPharmS Assistant Editors Leigh Anne Claase BSc, PhD, MRPharmS Bryony Jordan BSc, DipPharmPract, MRPharmS Colin R. Macfarlane BPharm, MSc, MRPharmS Allison F. Patterson BPharm, MRPharmS Rachel S. M. Ryan BPharm, MRPharmS Shama M. S. Wagle BPharm, DipPharmPract, MRPharmS Staff Editors Onatefe Akporobaro-Iwudibia MPharm, MRPharmS Sejal Amin BPharm, MSc, MRPharmS Angela K. Bennett MPharm, DipPharmPract, MRPharmS Susan E. Clarke BPharm, DipClinPharm, MRPharmS Julia A. Dickin MPharm, MRPharmS Bele´n Granell Villen BSc, PGDipClinPharm, MRPharmS Manjula Halai BScChem, MPharm, MRPharmS Emma E. Harris MPharm, DipPharmPract, MRPharmS Amy E. Harvey MPharm, PGDipCommPharm,
W. Moira Kinnear
BA BNF 58
Executive Secretary Heidi Homar
BPharm, FRPharmS
Carwen Wynne Howells
MBBS, BSc, FFPM, DAvMed, DipIMC
Rafe Suvarna
BSc(Pharm), MRPharmS, DMS
Gul Root
Donal O’Donoghue
BSc, MSc, MRPharmS
BPharm, MSc, MRPharmS, SP, IP
MRPharmS
Beth Hird
BMedSci, MB ChB, DM, FRCGP
Anthony J. Avery
MA, MB ChB, DPhil, FRCP, FBPharmacolS, FFPM
Committee Members Jeffrey K. Aronson
PhD, BPharm, FRPharmS
Deputy Chair Alison Blenkinsopp
BSc, MB, BS, DM, FRCP
Chair Derek G. Waller
Joint Formulary Committee 2008–2009
MRCP, FRCP
Paul S. Maycock MPharm, DipPharmPract, MRPharmS Elizabeth Nix DipPharm(NZ), MRPharmS Rupal M. Patel BSc, MRPharmS Sanjay Patel BPharm, MRPharmS Claire L. Preston BPharm, MRPharmS Shaistah J. Qureshi MPharm, MRPharmS Vinaya K. Sharma BPharm, MSc, PGDipPIM, MRPharmS Editorial Assistant Jennifer L. Palmer RegPharmTech Senior BNF Administrator Heidi Homar BA Administrative Assistant Cristina Lopez-Bueno BA Managing Editor: Digital Development and Delivery Cornelia Schnelle MPhil Digital Development Editor Philip D. Lee BSc, PhD Digital Development Assistants Robert C. Buckingham BSc Michelle Cartwright Zephyr M.Wastell Terminologist Sarah Peck BSc Head of Publishing Services John Wilson BNF Publishing Director Duncan S. T. Enright MA, PGCE, MInstP, FIDM Managing Director, RPS Publishing Robert Bolick BA, MA
Dental Advisory Group 2008–2009
BDS, DDPHRCS, MCDH
BPharm, PhD, MRPharmS
Molly Courtenay
PhD, MSc, Cert Ed, BSc, RGN
Duncan S.T. Enright
MA, PGCE, MInstP, FIDM
Penny M. Franklin
Margaret F. Helliwell
MB, BS, BSc, MFPHM, FRCP (Edin)
Bryony Jordan
BSc, DipPharmPract, MRPharmS
Martin J. Kendall
Fiona Lynch
BSc, MSc, RGN, RSCN
John Martin
Paul S. Maycock
Michele L. Cossey
MPharm, DipPharmPract, MRPharmS
Maureen P. Morgan
Elizabeth J. Plastow
RMN, RGN, RSCPHN(HV), MSc, PGDipEd
Paul G.H. Robinson Gul Root
BSc, MRPharmS, DMS
Jill M. Shearer
BSc, RGN, RM
Rabina Tindale
RGN, RSCN, BSc, DipAEN, PGCE
Vicky Vidler
Executive Secretary Heidi Homar
BA BNF 58
Chair David Wray
BPharm, MSc, MRPharmS
BSc, RGN
Rebecca F. Cheatle
MD, BDS, MB ChB, FDSRCPS, FDSRCS Ed, F MedSci
Committee Members Christine Arnold
Barry Cockcroft
BDS, FDSRCS (Eng)
Duncan S.T. Enright
MA, PGCE, MInstP, FIDM
Amy E. Harvey
MPharm, PGDipCommPharm, MRPharmS
Martin J. Kendall
OBE, MD, FRCP, FFPM
RN, RCN, RSCPHN(HV), MA, PGCE
Lesley P. Longman
BSc, BDS, FDSRCS Ed, PhD
John Martin
BPharm, PhD, MRPharmS
Michelle Moffat
OBE, MD, FRCP, FFPM
RN, RHV, MBA
The British Dental Association has contributed to the advice on medicines for dental practice through its representatives on the Dental Advisory Group.
MSc, BA, RGN, DN
Committee Members Una J. Adderley
PhD, RGN
Chair Nicky A. Cullum
Nurses Prescribers’ Advisory Group 2008–2009
BA Advice on dental practice
BDS, MFDS RCS Ed, M Paed Dent RCPS, FDS (Paed Dent) RCS Ed
Executive Secretary Heidi Homar
MA, MSc, PhD
Secretary Arianne J. Matlin
BPharm, MRPharmS
Rachel S.M. Ryan
BDS, BSc, PhD, FDSRCPS, FDS (OS) RCPS
Richard J. Oliver
MA, RGN, RSCN
How the BNF is constructed
.
dients including ‘non-active’ ingredients (the BNF is committed to using approved names and descrip- tions as laid down by the Medicines Act);
. comparing the indications, cautions, contra-indica- tions, and side-effects with similar existing drugs.
Where these are different from the expected pat- tern, justification is sought for their inclusion or exclusion;
. seeking independent data on the use of drugs in
pregnancy and breast-feeding;
. incorporating the information into the BNF using
established criteria for the presentation and inclu- sion of the data;
checking interpretation of the information by two staff editors before submitting to a senior editor; changes relating to doses receive an extra check;
receives summaries of product characteristics (SPCs) of all new products as well as revised SPCs for existing products. The SPCs are the principal source of product information and are carefully processed, despite the ever-increasing volume of information being issued by the pharmaceutical industry. Such processing involves:
. identifying potential clinical problems or omissions
and seeking further information from manufacturers or from expert advisers;
. careful validation of any areas of divergence of the
BNF from the SPC before discussion by the Com- mittee (in the light of supporting evidence);
. constructing, with the help of expert advisers, a
comment on the role of the drug in the context of similar drugs. Much of this processing is applicable to the following sources as well.
Expert advisers The role of expert clinical advisers in
providing the appropriate clinical context for all BNF information is discussed above.
. verifying the approved names of all relevant ingre-
Summaries of product characteristics The BNF
The BNF is unique in bringing together authoritative, independent guidance on best practice with clinically validated drug information, enabling healthcare profes- sionals to select safe and effective medicines for indivi- dual patients. Information in the BNF has been validated against emerging evidence, best-practice guidelines, and advice from a network of clinical experts. Hundreds of changes are made between editions, and the most clinically significant changes are listed at the front of each edition (pp. xi–xiii).
context of best clinical practice in the UK;
Joint Formulary Committee
The Joint Formulary Committee (JFC) is responsible for the content of the BNF. The JFC includes doctors appointed by the BMJ Publishing Group, pharmacists appointed by the Royal Pharmaceutical Society of Great Britain, and representatives from the Medicines and Healthcare products Regulatory Agency (MHRA) and the UK health departments. The JFC decides on matters of policy and reviews amendments to the BNF in the light of new evidence and expert advice. The Commit- tee meets quarterly and each member also receives proofs of all BNF chapters for review before publication.
Editorial team
BNF staff editors are pharmacists with a sound under- standing of how drugs are used in clinical practice. Each staff editor is responsible for editing, maintaining, and updating specific chapters of the BNF. During the pub- lication cycle the staff editors review information in the BNF against a variety of sources (see below). Amendments to the text are drafted when the editors are satisfied that any new information is reliable and relevant. The draft amendments are passed to expert advisers for comment and then presented to the Joint Formulary Committee for consideration. Additionally, for each edition, sections are chosen from every chapter for thorough review. These planned reviews aim to verify all the information in the selected sections and to draft any amendments to reflect the current best practice.
Staff editors prepare the text for publication and under- take a number of checks on the knowledge at various stages of the production.
Expert advisers
The BNF uses about 60 expert clinical advisers (includ- ing doctors, pharmacists, nurses, and dentists) through- out the UK to help with the production of each edition. The role of these expert advisers is to review existing text and to comment on amendments drafted by the staff editors. These clinical experts help to ensure that the BNF remains reliable by:
. commenting on the relevance of the text in the
. checking draft amendments for appropriate inter-
The BNF uses a variety of sources for its information; the main ones are shown below.
pretation of any new evidence;
. providing expert opinion in areas of controversy or
when reliable evidence is lacking;
. advising on areas where the BNF diverges from
summaries of product characteristics;
. providing independent advice on drug interactions,
prescribing in hepatic impairment, renal impair- ment, pregnancy, breast-feeding, children, the elderly, palliative care, and the emergency treat- ment of poisoning. In addition to consulting with regular advisers, the BNF calls on other clinical specialists for specific develop- ments when particular expertise is required. The BNF also works closely with a number of expert bodies that produce clinical guidelines. Drafts or pre- publication copies of guidelines are routinely received for comment and for assimilation into the BNF.
Sources of BNF information
BNF 58
Literature
The Prescription Pricing Divi- sion provides information on prices of medicinal pro- ducts and appliances in the BNF. The BNF also receives and processes price lists from product suppliers.
The BNF is an independent professional publication that is kept up-to-date and addresses the day-to-day prescribing information needs of healthcare profes- sionals. Use of this resource throughout the health service helps to ensure that medicines are used safely, effectively, and appropriately.
Market research is conducted at regular intervals to gather feedback on specific areas of development, such as drug interactions or changes to the way information is presented in digital formats.
Market research
groups across various healthcare professions (e.g. doc- tors, pharmacists, nurses, dentists). The aim of these groups will be to provide feedback to the editors and publishers to ensure that BNF publications continue to serve the needs of its users.
Virtual user groups The BNF has set up virtual user
provided with a complimentary copy of the BNF and invited to comment on it. Close scrutiny of the BNF by the manufacturers provides an additional check and allows them an opportunity to raise issues about the BNF’s presentation of the role of various drugs; this is yet another check on the balance of the BNF’s advice. All comments are looked at with care and, where necessary, additional information and expert advice are sought.
Comments from industry Each manufacturer is
invited to send in comments. Numerous letters and emails are received during the preparation of each edition. Such feedback helps to ensure that the BNF provides practical and clinically relevant information. Many changes in the presentation and scope of the BNF have resulted from comments sent in by users.
Comments from readers Readers of the BNF are
Pricing information
Staff editors monitor core medical and pharmaceutical journals. Research papers and reviews relating to drug therapy are carefully processed. When a difference between the advice in the BNF and the paper is noted, the new information is assessed for reliability and relevance to UK clinical practice. If necessary, new text is drafted and discussed with expert advisers and the Joint Formulary Committee. The BNF enjoys a close working relationship with a number of national informa- tion providers.
relevant information from various Government bodies including Statutory Instruments and regulations affect- ing the Prescription only Medicines Order. Official com- pendia such as the British Pharmacopoeia and its addenda are processed routinely to ensure that the BNF complies with the relevant sections of the Medi- cines Act. The BNF itself is named as an official com- pendium in the Medicines Act. The BNF maintains close links with the Home Office (in relation to controlled drug regulations) and the Medi- cines and Healthcare products Regulatory Agency (including the British Pharmacopoeia Commission). Safety warnings issued by the Commission on Human Medicines (CHM) and guidelines on drug use issued by the UK health departments are processed as a matter of routine. Relevant professional statements issued by the Royal Pharmaceutical Society of Great Britain are included in the BNF as are guidelines from bodies such as the Royal College of General Practitioners. The BNF reflects information from the Drug Tariff, the Scottish Drug Tariff, and the Northern Ireland Drug Tariff.
Statutory information The BNF routinely processes
resources and each team keeps the other informed of significant developments and shifts in the trends of drug usage.
ence . The BNF has access to Martindale information
are used to provide background information for the review of existing text or for the construction of new text. The BNF team works closely with the editorial team that produces Martindale: The Complete Drug Refer-
Reference sources Textbooks and reference sources
checked against consensus guidelines produced by expert bodies. A number of bodies make drafts or pre- publication copies of the guidelines available to the BNF; it is therefore possible to ensure that a consistent message is disseminated. The BNF routinely processes guidelines from the National Institute for Health and Clinical Excellence (NICE), the Scottish Medicines Con- sortium (SMC), and the Scottish Intercollegiate Guide- lines Network (SIGN).
Consensus guidelines The advice in the BNF is
The BNF has access to various databases of systematic reviews (including the Cochrane Library and various web-based resources). These are used for answering specific queries, for reviewing existing text and for constructing new text. Staff editors receive training in critical appraisal, litera- ture evaluation, and search strategies. Reviews pub- lished in Clinical Evidence are used to validate BNF advice.
Systematic reviews
BNF 58 How to use the BNF Notes on conditions, drugs and preparations
The main text consists of classified notes on clinical conditions, drugs and preparations. These notes are divided into 15 chapters, each of which is related to a particular system of the body or to an aspect of medical care. Each chapter is then divided into sections which begin with appropriate notes for prescribers. These notes are intended to provide information to doctors, dental surgeons, pharmacists, nurses, and other healthcare professionals to facilitate the selection of suitable treat- ment. Guidance on dental and oral conditions is identi- fied by means of a relevant heading (e.g. Dental and Orofacial pain) in the appropriate sections of the BNF. The notes are followed by details of relevant drugs and preparations. Preparations which can be prescribed by dental surgeons using NHS form FP10D (GP14 in Scot- land, WP10D in Wales) are identified within the BNF by means of a note headed Dental Prescribing on NHS.
DRUG NAME
U is used to denote those preparations that are considered by the Joint Formulary Commit- tee to be less suitable for prescribing. Although such preparations may not be considered as drugs of first choice, their use may be justifiable in certain circum- stances.
, sugar-free, active ingredient mg/mL, net price, pack size = basic NHS price. Label: (as in Appendix 9)
Excipients include clinically important excipients or electrolytes Note Specific notes about the product e.g. handling
Preparations
Preparations usually follow immediately after the drug which is their main ingredient. Preparations are included under a non-proprietary title, if they are marketed under such a title, if they are not otherwise prescribable under the NHS, or if they may be prepared extemporaneously. If proprietary preparations are of a distinctive colour this is stated. In the case of compound preparations the indica- tions, cautions, contra-indications, side-effects, and interactions of all constituents should be taken into account for prescribing.
Drugs
Drugs appear under pharmacopoeial or other non- proprietary titles. When there is an appropriate cur-
rent monograph (Medicines Act 1968, Section 65)
preference is given to a name at the head of that monograph; otherwise a British Approved Name (BAN), if available, is used (see also Name changes). The symbol
Prescription-only medicines A
Proprietary Name (Manufacturer) A D
This symbol has been placed against those prepara- tions that are available only on a prescription issued by an appropriate practitioner. For more detailed information see Medicines, Ethics and Practice, No. 33, London, Pharmaceutical Press, 2009 (and sub- sequent editions as available). The symbol
C indicates that the preparation is subject to the prescription requirements of the Mis- use of Drugs Act. For regulations governing prescrip- tions for such preparations see p. 7.
Preparations not available for NHS prescription D
This symbol has been placed against those prepara- tions included in the BNF that are not prescribable under the NHS. Those prescribable only for specific disorders have a footnote specifying the condition(s) for which the preparation remains available. Some preparations which are not prescribable by brand name under the NHS may nevertheless be dispensed using the brand name providing that the prescription shows an appropriate non-proprietary name.
Prices
Prices have been calculated from the basic cost used in pricing NHS prescriptions dispensed in May 2009, see also Prices in the BNF p. x for details.
BNF 58
1 Approved Name (Non-proprietary) A
Pharmaceutical form
, colour, coating, active ingredient and amount in dosage form, net price, pack size = basic NHS price. Label: (as in Appendix 9)
For information available since publication of this edition see bnf.org
details of any contra-indica- tions to use of drug
Guidance on prescribing
This part includes information on prescription writing, controlled drugs and dependence, prescribing for chil- dren and the elderly, and prescribing in palliative care. Advice is given on the reporting of adverse reactions.
U Indications
details of uses and indications
Cautions
details of precautions required (with cross-references to appropriate Appendixes) and also any monitoring required
Counselling Verbal explanation to the patient of specific details of the drug treatment (e.g. posture when taking a medicine)
Contra-indications
Side-effects
Pharmaceutical form
details of common and more serious side-effects
Dose .
Dose and frequency of administration (max. dose);
CHILD
and
ELDERLY
details of dose for specific age group
.
By alternative route , dose and frequency
1. Exceptions to the prescribing status are indicated by a note or footnote.
The BNF also includes advice on medical emergencies and other medical problems in dental practice, together with a review of the oral side-effects of drugs.
The PACT Standard Report, or in Scotland SPA Level 1
BNF prices are not, therefore, suitable for quoting to patients seeking private prescriptions or contemplat- ing over-the-counter purchases. A fuller explanation of costs to the NHS may be obtained from the Drug Tariff. Separate drug tariffs are applicable to England and Wales, Scotland, and Northern Ireland; prices in the different tariffs may vary.
3. Over-the-counter sales are at retail price, as opposed to basic net price, and include VAT.
2. Private prescription charges are calculated on a separate basis;
1. Costs to the NHS are greater than the net prices quoted and include professional fees and overhead allowances;
The unit of 20 is still sometimes used as a basis for comparison, but where suitable original packs or patient packs are available these are priced instead. Gross prices vary as follows:
Prices have generally been calculated from the net cost used in pricing NHS prescriptions dispensed in May 2009. Unless an original pack is available these prices are based on the largest pack size of the preparation in use in community pharmacies. The price for an extem- poraneously prepared preparation has been omitted where the net cost of the ingredients used to make it would give a misleadingly low impression of the final price. In Appendix 8 prices stated are per dressing or bandage.
Basic net prices are given in the BNF to provide an indication of relative cost. Where there is a choice of suitable preparations for a particular disease or condi- tion the relative cost may be used in making a selection. Cost-effective prescribing must, however, take into account other factors (such as dose frequency and duration of treatment) that affect the total cost. The use of more expensive drugs is justified if it will result in better treatment of the patient or a reduction of the length of an illness or the time spent in hospital.
Prices in the BNF
The PACT Catalogue, or in Scotland SPA Level 2 Report, provides a full inventory of the prescriptions issued by a prescriber. The PACT catalogue is available on request for periods between 1 and 24 months. To allow the prescriber to target specific areas of prescribing, a Catalogue may be requested to cover individual pre- parations, BNF sections, or combinations of BNF chap- ters. PACT is also available electronically ( www.nhsbsa.nhs.uk ). This system gives users on-line access through NHSnet to the 3 years’ prescribing data held on the NHS Prescription Services’ database; tools for analysing the data are also provided.
basis. The PACT Standard Report contains an analysis of the practitioner’s prescribing and the practice pre- scribing over the last 3 months, and gives comparisons with the local Primary Care Trust equivalent practice and with a national equivalent. The report also contains details of the practice prescribing for a specific topic; a different topic is chosen each quarter.
Report , is sent to all general practitioners on a quarterly
PACT (Prescribing Analyses and Cost) and SPA (Scottish Prescribing Analysis) provide prescribers with informa- tion about their prescribing.
An index of conditions relevant to dental surgeons is included.
PACT and SPA
During the revision of each edition of the BNF careful note is taken of the information that appears on the patient information leaflets. Where it is considered appropriate to alert a prescriber to some specific limita- tion appearing on the patient information leaflet (for example, in relation to pregnancy) this advice now appears in the BNF. The patient information leaflet also includes details of all inactive ingredients in the medicine. A list of com- mon E numbers and the inactive ingredients to which they correspond is now therefore included in the BNF (see inside back cover).
Many medicines are available in manufacturers’ original packs complete with patient information leaflets. Where patient packs are available, the BNF shows the number of dose units in the packs. In particular clinical circum- stances, where patient packs need to be split or medi- cines are provided in bulk dispensing packs, manufac- turers will provide additional supplies of patient information leaflets on request.
All medicines have approved labelling and patient infor- mation leaflets; anyone who supplies a medicine is responsible for providing the relevant information to the patient (see also Appendix 9).
Directive 92/27/EEC specifies the requirements for the labelling of medicines and outlines the format and content of patient information leaflets to be supplied with every medicine; the directive also requires the use of Recommended International Non-proprietary Names for drugs (see p. xiv).
Patient packs
The Dental Practitioners’ List and the Nurse Prescribers’ List are also included in this section. The indexes consist of the Index of Manufacturers and the Main Index.
The appendixes include information on interactions, liver disease, renal impairment, pregnancy, breast-feed- ing, intravenous additives, borderline substances, wound management products, and cautionary and advi- sory labels for dispensed medicines. They are designed for use in association with the main body of the text.
Appendixes and indexes
This chapter provides information on the management of acute poisoning when first seen in the home, although aspects of hospital-based treatment are mentioned.
Emergency treatment of poisoning
BNF 58 Changes for this edition Significant changes
The BNF is revised twice yearly and numerous changes are made between issues. All copies of BNF No. 57 (March 2009) should therefore be withdrawn and replaced by BNF No. 58 (September 2009). Significant changes have been made in the following sections for BNF No. 58: Salicylate poisoning, Emergency treatment of poisoning Paracetamol poisoning, Emergency treatment of pois- oning Ethylene glycol and methanol poisoning, Emergency treatment of poisoning Infliximab for acute exacerbations of ulcerative colitis [NICE guidance], section 1.5 Management of arrhythmias [updated advice on atrial flutter, paroxysmal supraventricular tachycardia and ventricular tachycardia], section 2.3.1 Use of beta-adrenoceptor blocking drugs in patients with COPD, section 2.4 Rivaroxaban [NICE guidance], section 2.8.2 Corticosteroids [updated advice], section 3.2 Over-the-counter cough and cold medicines [MHRA/ CHM advice], section 3.9.1 and section 12.2.2 Tricyclic and related antidepressant drugs [section updated and reorganised], section 4.3.1
Binocrit c
, p. 222 Estramustine phosphate, p. 471
Equasym XL c
, p. 715
EMLA c
XL [depression], p. 220
Efexor c
oral gel, p. 619 Dantrolene [malignant hyperthermia], p. 713 Darunavir, p. 344 Dasatinib [accelerated and blast phase chronic myeloid leukaemia, acute lymphoblastic leukaemia], p. 488 Dexamethasone injection, p. 570 Dexamfetamine [refractory ADHD], p. 221 Diamorphine [myocardial infarction], p. 239 Diazepam [status epilepticus], p. 266 Diazepam [premedication], p. 705 Efavirenz, p. 347
Daktarin c
XL, p. 222 Cyanocobalamin [by mouth], p. 516
Concerta c
, p. 519 Chloroquine [prophylaxis of malaria], p. 362 Ciprofloxacin, p. 329
, p. 589
Clostridium difficile infection, section 5.1, Table 1
Axsain c
58: Abacavir, p. 341 Aciclovir [varicella and herpes zoster], p. 349 Alprostadil, p. 437 Atracurium [surgery or intubation], p. 709 Atomoxetine, p. 221 Atropine sulphate [organophosphorous insecticide pois- oning, text], p. 36 Atropine sulphate [control of muscarinic side-effects of edrophonium], p. 703
Dose changes Changes in dose statements introduced into BNF No.
10.1.3 Topical oral pain relief products containing salicylates [CHM advice], section 12.3.1 Efalizumab [suspension of marketing authorisation], section 13.5.3 Isotretinoin [pregnancy prevention], section 13.6.2 Immunoglobulins [section reorganised and updated], section 14.5 Adjustment of drug dosages in renal impairment [updated advice and terminology], appendix 3 Enteral feeds and nutritional supplements for adults [new tables], appendix 7 Wound management products [table to aid choice of dressing, and all sections reorganised], appendix 8 Changes to Dental Practitioners’ Fomulary, p. 948
Management of osteoarthritis, section 10.1 Cytokine modulators [section reorganised], section
8.1.4 Drugs unsafe for use in acute porphyrias, section 9.8.2 Management of rheumatoid arthritis, section 10.1
], section 6.1.1 Diabetes and surgery, section 6.1.1 Use of insulin detemir and insulin glargine for type 2 diabetes [NICE guidance updated], section 6.1.1.2 Use of a thiazolidinedione for type 2 diabetes [NICE guidance updated], section 6.1.2.3 Use of sitagliptin and vildagliptin for type 2 diabetes [NICE guidance], section 6.1.2.3 Use of exenatide for type 2 diabetes [NICE guidance], section 6.1.2.3 Nocturnal enuresis [updated advice], section 7.4.2 Administration of vinca alkaloids [NPSA advice], section
1c
[update on units to express HbA
1c
5.3.4 Oseltamivir, zanamivir, and amantadine for the prophy- laxis and treatment of influenza [updated NICE gui- dance], section 5.3.4 Intravenous quinine to treat benign malaria in patients unable to take oral therapy, section 5.4.1 Measurement of HbA
Peritonitis, section 5.1, Table 1 Hospital-acquired pneumonia, section 5.1, Table 1 Antibacterial prophylaxis for endoscopic retrograde cholangiopancreatography, percutaneous endoscopic gastronomy or jejunostomy, section 5.1, Table 2 Oseltamivir and zanamivir [prophylaxis and treatment of influenza in pregnancy and breast-feeding], section
BNF 58
European viper venom antiserum [text], p. 36 Fentanyl injection, p. 708
effervescent tablets