MedicinesInformationServices Informationondrugtherapy MedicinesinDentistrySpecialistAdvisoryService Informationonanyaspectofdrugtherapycanbeobtained Informationondrugtherapyrelatingtodentaltreatment. fromRegionalandDistrictMedicinesInformationServices. Liverpool:(0151)7948206 Detailsregardingthelocalservicesprovidedwithinyour regioncanbeobtainedbytelephoningthefollowing numbers. DriverandVehicleLicensingAgency(DVLA) Informationonthenationalmedicalguidelinesoffitness England todriveisavailablefrom: Birmingham: (0300)7708564 www.gov.uk/government/publications/at-a-glance Bristol: (0117)3426655 Ipswich: (0300)7708564 MedicinesforChildrenInformationLeaflets Leeds: (0113)2065377 Medicinesinformationforparentsandcarers. Leicester: (0300)7708564 www.medicinesforchildren.org.uk Liverpool: (0151)7948113/7, or(0151)7948118 PatientInformationLines London: NHSUrgentCareServices111 .Guy’sHospital (020)71888750, or(020)71883849, PoisonsInformationServices or(020)71883855 UKNationalPoisonsInformationService(forhealthcare .NorthwickParkHospital (020)88692761, professionalsonly) or(020)88693973 Tel:03448920111 Newcastle: (0191)2824631 www.toxbase.org Southampton: (023)81206908/9 Wales Sport Cardiff: (029)21842251 ▶ Informationregardingtheuseofmedicinesinsportis availablefromUKAnti-Doping: Scotland www.ukad.org.uk Aberdeen: (01224)552316 Tel:(020)78423450 Dundee: (01382)632351, [email protected] or(01382)660111Extn32351 UKAnti-Doping Edinburgh: (0131)2422920 F2-le6eStbalainsbkuHryouSsqeuare Glasgow: (0141)2114407 London NorthernIreland EC4Y8AE Belfast: (028)95040558 ▶ Informationabouttheprohibitedstatusofspecific medicinesbasedonthecurrentWorldAnti-Doping RepublicofIreland AgencyProhibitedListisavailablefromGlobalDrug Dublin: (01)4730589, ReferenceOnline:www.globaldro.com/UK/search or(01)4537941Extn2348 TravelImmunisation UnitedKingdomMedicinesInformation(UKMI)website Up-to-dateinformationontravelimmunisation www.sps.nhs.uk/ requirementsmaybeobtainedfrom: ▶ NationalTravelHealthNetworkandCentre(for healthcareprofessionalsonly)08456026712Monday Manufacturers andFriday:9–11a.m.and1–2p.m,Tuesdayto Telephonenumbersandemailaddressesofmanufacturers Thursday:9–11a.m.and1–3:30p.m. listedinBNFPublicationsareshownintheIndexof ▶ travelhealthpro.org.uk/ manufacturersp.1731 TravelMedicineTeam,HealthProtectionScotland (0141)3001100(2–4p.m.weekdays) ▶ www.travax.nhs.uk(forregisteredusersoftheNHS UKTeratologyInformationService websiteTravaxonly) Informationondrugandchemicalexposuresin ▶ WelshGovernmentSwitchboardEnglishlanguage pregnancy. 03000603300(9a.m.–5:30p.m.weekdaysonly) Tel:03448920909 ▶ WelshGovernmentSwitchboardYrlaithGymraeg www.uktis.org 03000604400(9a.m.–5:30p.m.weekdaysonly) ▶ DepartmentofHealthandSocialServices(Belfast) (028)90522118(weekdays) UKDrugsinLactationAdvisoryService(UKDILAS) Informationonthecompatibilityofdrugswith breastfeeding. ListofRegisteredMedicalPractitioners Tel:(0116)2586491, Detailsonwhetherdoctorsareregisteredandholda or(0121)4247298 licencetopractisemedicineintheUKcanbeobtained Email:[email protected] fromtheGeneralMedicalCouncil. www.sps.nhs.uk/ukdilas Tel:(0161)9236602 www.gmc-uk.org/register COMMUNITY PHARMACIST SPECIAL OFFER Instant access to essential medicines information As a community pharmacist, we know you strive to provide safe and eff ective patient care. Subscribe now for instant access to essential resources at a reduced rate subscription to MedicinesComplete. Resources include: Stockley’s Drug Interactions, Stockley’s Interactions Checker, Martindale: The Complete Drug Reference, Martindale’s ADR Checker, British National Formulary and BNF for Children. MedicinesComplete makes it easy for healthcare professionals to access essential medicines information at the point of care. British National BNF Stockley’s Drug Stockley’s Martindale: The Martindale’s Formulary (BNF) for Children Interactions Interactions Complete Drug ADR Checker Checker Reference Find out more at about.medicinescomplete.com/sector/pharmacy/England-Wales Off ers also available to Ireland and Rest of World BBNNFF22002211--iinnsseerrtt--114488xx221100mmmm--BBWW--FFiinnaallOOKK..iinndddd 11 2222//0077//2211 1122::3300 PPMM The first choice for concise medicines information Trusted by healthcare professionals in the UK and across the world, British National Formulary (BNF) and BNF for Children support confident decision-making at the point of care. BNF and BNF for Children are updated monthly through the online platform MedicinesComplete and via the BNF app. In print, BNF is updated twice a year and BNF for Children annually. FormularyComplete enables you to create and manage your own local formulary online, built on BNF and BNF for Children advice. How to access the BNF NHS Eligible Individuals Eligible healthcare professionals in the UK benefit from a print copy of the BNF and BNF for Children each September, and online access provided through MedicinesComplete and the BNF app. (cid:79) For print, refer to page ii, call 01268 495 609 or email [email protected]. (cid:79) To register as an NHS user for access through MedicinesComplete go to about.medicinescomplete.com/registration. (cid:79) Download the BNF app from your iOS or Android app store. Access BNF and BNF for Children alongside other best practice and evidence-based guidance from NICE at www.evidence.nhs.uk. Print Buy single copies or a subscription securely online, at www.pharmpress.com/bnf Bulk orders: call +44 (0)20 7572 2266 or email [email protected] Online Subscribe through MedicinesComplete or to FormularyComplete: call +44 (0)20 7572 2266 or email [email protected] For news on the latest new drugs and significant changes sign up to our newsletter at www.bnf.org/newsletter BBNNFF22002211--iinnsseerrtt--114488xx221100mmmm--BBWW--FFiinnaallOOKK..iinndddd 22 2222//0077//2211 1122::3300 PPMM BNF 82 September 2021 – March 2022 Publishedjointlyby InScotland,email: BMJGroup [email protected] TavistockSquare,London,WC1H9JP,UK InWales,email: and [email protected] PharmaceuticalPress InNorthernIreland: PharmaceuticalPressisthepublishingdivisionoftheRoyal Primarycare:contacttheBusinessServicesOrganisation PharmaceuticalSociety. Secondarycare:contactyourlocalTrustpharmacy 66-68EastSmithfield,LondonE1W1AW,UK department Copyright©BMJGroupandtheRoyalPharmaceutical AboutBNFcontent SocietyofGreatBritain2021. TheBNFisdesignedasadigestforrapidreferenceandit ISBN:9780857114136 maynotalwaysincludealltheinformationnecessaryfor prescribinganddispensing.Also,lessdetailisgivenonareas ISBN:9780857114129(NHSEdition) suchasobstetrics,malignantdisease,andanaesthesiasince ISBN:9780857114112(ePDF) itisexpectedthatthoseundertakingtreatmentwillhave specialistknowledgeandaccesstospecialistliterature.BNF PrintedbyGGPMediaGmbH,Pößneck,Germany forChildrenshouldbeconsultedfordetailedinformationon TypesetbyDataStandardsLtd,UK theuseofmedicinesinchildren.TheBNFshouldbe interpretedinthelightofprofessionalknowledgeand TextdesignbyPeterBurgess supplementedasnecessarybyspecialisedpublicationsand AcataloguerecordforthisbookisavailablefromtheBritish byreferencetotheproductliterature.Informationisalso Library. availablefromMedicinesInformationServices. Allrightsreserved.Nopartofthispublicationmaybe PleaserefertodigitalversionsofBNFforthemostup-to- reproduced,storedinaretrievalsystem,ortransmittedin datecontent.BNFispublishedinprintbutinterimupdates anyformorbyanymeans,withoutthepriorwritten areissuedandpublishedinthedigitalversionsofBNF.The permissionofthecopyrightholder. publishersworktoensurethattheinformationisasaccurate MaterialpublishedintheBritishNationalFormularymaynot andup-to-dateaspossibleatthedateofpublication,but beusedforanyformofadvertising,salesorpublicitywithout knowledgeandbestpracticeinthisfieldchangeregularly. priorwrittenpermission.Eachoftheclassificationandthe BNF’saccuracyandcurrencycannotbeguaranteedand textareprotectedbycopyrightand/ordatabaseright. neitherthepublishersnortheauthorsacceptany responsibilityforerrorsoromissions.Whileconsiderable RequestingcopiesofBNFPublications effortshavebeenmadetocheckthematerialinthis Papercopiesmaybeobtainedthroughanybookselleror publication,itshouldbetreatedasaguideonly.Prescribers, directfrom: pharmacistsandotherhealthcareprofessionalsareadvised PharmaceuticalPress tocheckwww.bnf.org/forinformationaboutkeyupdatesand c/oMacmillanDistribution(MDL) corrections. HampshireInternationalBusinessPark Pharmaid LimeTreeWay Numerousrequestshavebeenreceivedfrom Basingstoke developingcountriesforBNFs.ThePharmaidscheme HRGam24p8shYiJre oftheCommonwealthPharmacistsAssociation Tel:+44(0)1256302699 willdispatcholdBNFstocertainCommonwealth Fax:+44(0)1256812521 ccoomunmtorinews.eFalothrpmhoarrmeiancfyo.orrmg/awtihoant-owne-tdhoi/spshcahremmaied/s.ee [email protected] Ifyouwouldliketodonateyourcopyemail: orviaourwebsitewww.pharmpress.com/ [email protected] Forallbulkordersofmorethan20copies: Tel:+44(0)2075722266 [email protected] TheBNFisavailableasamobileapp,online(bnf.nice.org.uk/) andalsothroughMedicinesComplete;aPDAversionisalso available.Inaddition,BNFcontentcanbeintegratedintoa localformularybyusingBNFonFormularyComplete;see www.bnf.orgfordetails. DistributionofprintedBNFs InEngland,NICEpurchasesprinteditionsoftheBNF (Septembereditionsonly)fordistributionwithinthe NHS.Fordetailsofwhoiseligibletoreceiveacopyand furthercontactdetails,pleaserefertotheNICEwebsite: www.nice.org.uk/about/what-we-do/evidence-services/british- national-formulary.Ifyouareentitledtoasharedcopyofthe BNF,pleasecall(0)1268495609oremail: [email protected]. BNF82 iii Preface TheBNFisajointpublicationoftheBritishMedical BNFPublicationswelcomescommentsfromhealthcare AssociationandtheRoyalPharmaceuticalSociety.Itis professionals.Commentsandconstructivecriticismshould publishedundertheauthorityofaJointFormulary besentto: Committeewhichcomprisesrepresentativesofthetwo BritishNationalFormulary, professionalbodies,theUKHealthDepartments,the RoyalPharmaceuticalSociety, MedicinesandHealthcareproductsRegulatoryAgency,and 66–68EastSmithfield anationalguidelineproducer.TheDentalAdvisoryGroup London overseesthepreparationofadviceonthedrugmanagement E1W1AW ofdentalandoralconditions;theGroupincludes [email protected] representativesoftheBritishDentalAssociationanda representativefromtheUKHealthDepartments.TheNurse Thecontactemailformanufacturersorpharmaceutical Prescribers’AdvisoryGroupadvisesonthecontentrelevant companieswishingtocontactBNFPublicationsis tonursesandincludesrepresentativesfromdifferentparts [email protected] ofthenursingcommunityandfromtheUKHealth Departments. TheBNFaimstoprovideprescribers,pharmacists,and otherhealthcareprofessionalswithsoundup-to-date informationabouttheuseofmedicines. TheBNFincludeskeyinformationontheselection, prescribing,dispensingandadministrationofmedicines. MedicinesgenerallyprescribedintheUKarecoveredand thoseconsideredlesssuitableforprescribingareclearly identified.Littleornoinformationisincludedonmedicines promotedforpurchasebythepublic. Informationondrugsisdrawnfromthemanufacturers’ productliterature,medicalandpharmaceuticalliterature, UKhealthdepartments,regulatoryauthorities,and professionalbodies.Adviceisconstructedfromclinical literatureandreflects,asfaraspossible,anevaluationofthe evidencefromdiversesources.TheBNFalsotakesaccount ofauthoritativenationalguidelinesandemergingsafety concerns.Inaddition,theeditorialteamreceivesadviceon alltherapeuticareasfromexpertclinicians;thisensuresthat theBNF’srecommendationsarerelevanttopractice. TheBNFisdesignedasadigestforrapidreferenceandit maynotalwaysincludealltheinformationnecessaryfor prescribinganddispensing.Also,lessdetailisgivenonareas suchasobstetrics,malignantdisease,andanaesthesiasince itisexpectedthatthoseundertakingtreatmentwillhave specialistknowledgeandaccesstospecialistliterature. Similarly,littleornoinformationisincludedonmedicines forveryrareconditions.BNFforChildrenshouldbe consultedfordetailedinformationontheuseofmedicinesin children.TheBNFshouldbeinterpretedinthelightof professionalknowledgeandsupplementedasnecessaryby specialisedpublicationsandbyreferencetotheproduct literature.Informationisalsoavailablefrommedicines informationservices,seeMedicinesInformationServices (seeinsidefrontcover). ItisimportanttousethemostrecentBNFinformationfor makingclinicaldecisions.TheprinteditionoftheBNFis updatedinMarchandSeptembereachyear.Monthly updatesareprovidedonlineviaMedicinesCompleteandthe NHSEvidenceportal.Themoreimportantchangesarelisted underChanges;changeslistedonlinearecumulative(from oneprinteditiontothenext),andcanbeprintedoffeach monthtoshowthemainchangessincethelastprintedition asanaidememoireforthoseusingprintcopies. TheBNFPublicationswebsite(www.bnf.org)includes additionalinformationofrelevancetohealthcare professionals.OtherdigitalformatsoftheBNF—including versionsformobiledevicesandintegrationintolocal formularies—arealsoavailable. iv BNF82 Contents Preface pageiii NOTESONDRUGSANDPREPARATIONS Acknowledgements v HowBNFpublicationsareconstructed viii 1 Gastro-intestinalsystem page40 HowtouseBNFPublicationsinprint x 2 Cardiovascularsystem 107 Changes xvi 3 Respiratorysystem 252 GuidanceonPrescribing 1 4 Nervoussystem 319 Prescriptionwriting 5 5 Infection 531 Emergencysupplyofmedicines 7 6 Endocrinesystem 708 Controlleddrugsanddrugdependence 8 7 Genito-urinarysystem 821 Adversereactionstodrugs 12 8 Immunesystemandmalignantdisease 885 Guidanceonintravenousinfusions 16 9 Bloodandnutrition 1063 Medicinesoptimisation 18 10 Musculoskeletalsystem 1149 Antimicrobialstewardship 20 11 Eye 1211 Prescribingforchildren 22 12 Ear,noseandoropharynx 1246 Prescribinginhepaticimpairment 23 13 Skin 1274 Prescribinginrenalimpairment 23 14 Vaccines 1342 Prescribinginpregnancy 27 15 Anaesthesia 1396 Prescribinginbreast-feeding 28 16 Emergencytreatmentofpoisoning 1430 Prescribinginpalliativecare 28 APPENDICESANDINDICES Prescribingfortheelderly 33 Appendix1 Drugsandsport 34 Interactions 1445 Prescribingindentalpractice 35 Appendix2 Borderlinesubstances 1654 Appendix3 Cautionaryandadvisorylabelsfordispensedmedicines 1696 Appendix4 Woundmanagementproductsandelasticatedgarments 1699 DentalPractitioners’Formulary 1723 NursePrescribers’Formulary 1725 Non-medicalprescribing 1730 Indexofmanufacturers 1731 Special-orderManufacturers 1736 Index 1738 Medicalemergenciesinthecommunity insidebackcover BNF82 v Acknowledgements TheJointFormularyCommitteeisgratefultoindividualsand organisationsthathaveprovidedadviceandinformationto theBNF. Contributorsforthisupdatewere: K.W.Ah-See,M.N.Badminton,A.K.Bahl,D.Bilton, M.F.Bultitude,I.F.Burgess,C.E.Dearden,D.W.Denning, D.A.C.Elliman,P.Emery,A.Freyer,N.J.L.Gittoes,M.Gupta, T.L.Hawkins,S.P.Higgins,T.H.Lee,A.Lekkas, D.N.J.Lockwood,A.M.Lovering,M.G.Lucas,P.D.Mason, D.A.McArthur,L.M.Melvin,R.M.Mirakian,P.Morrison, S.M.S.Nasser,C.Nelson-Piercy,D.J.Nutt,R.Patel, A.B.Provan,A.S.C.Rice,D.J.Rowbotham,S.E.Slater,J.Soar, M.D.Stewart,S.Thomas,A.D.Weeks,A.Wilcock. Expertadviceonthemanagementoforalanddental conditionswaskindlyprovidedbyA.Crighton,C.Scully, R.A.Seymour,andR.Welbury.S.Kaurprovidedvaluable adviceondentalprescribingpolicy. Valuableadvicehasbeenprovidedbythefollowingexpert groups:AdvisoryCommitteeonMalariaPrevention, AssociationofBritishNeurologists,BritishAssociationof Dermatologists’Therapy&GuidelinesSub-committee, BritishGeriatricsSociety,BritishMenopauseSociety,British SocietyforAllergy&ClinicalImmunology,BritishSociety forAntimicrobialChemotherapy,BritishSocietyof Gastroenterology,BritishSocietyofRheumatology,College ofMentalHealthPharmacy,ENTUK,FacultyofSexualand ReproductiveHealthcare,NationalPoisonsInformation Service&TOXBASE,PublicHealthEngland,Renal Association,RoyalCollegeofAnaesthetists,RoyalCollegeof ObstetriciansandGynaecologists,RoyalCollegeof Ophthalmologists,RoyalCollegeofPathologists,Royal CollegeofPhysicians,RoyalCollegeofPsychiatrists,Society forEndocrinology,UKTeratologyInformationService, VascularSociety. TheMHRAhaveprovidedvaluableassistance. Correspondentsinthepharmaceuticalindustryhave providedinformationonnewproductsandcommentedon productsintheBNF. Numerousdoctors,pharmacists,nurses,andothershave sentcommentsandsuggestions. TheBNFteamaregratefulforthesupportandaccesstoin- houseexpertiseatPharmaceuticalPressandacknowledge theassistanceofK.Baxter,A.Naylor,J.Macdonald, N.Potterandtheirteams. H.Bulman,Z.Dildar,K.EstifanosBiru,D.Gutu,A.Healy, K.Inderaraj,N.Khatibi-Jah,andM.Sohaibprovided considerableassistanceduringtheproductionofthisupdate oftheBNF. vi BNF82 BNFStaff ASSOCIATECONTENTDIRECTOR(BNFPUBLICATIONS) KateTowersBPharm(AU),GCClinPharm(AU) SENIOREDITORIALSTAFF KiriAikmanBPharm(NZ),PGDipClinPharm(NZ),ARPharmS HollyHayneBSc(Pharmacology)(NZ),BPharm(NZ) AlisonBrayfieldBPharm,MRPharmS JeanMacKershanBSc,PgDip RobertBuckinghamBSc,SRPharmS AngelaMcFarlaneBSc,DipClinPharm CatherineCadartBPharm(AU),BA(Hons), AlexanderMcPhailMPharm,PGDipClinPharm GradDipHospPharm(AU),MRPharmS ClairePrestonBPharm,PGDipMedMan,MRPharmS MahinazHarrisonBPharm,DipPharmPract,IP,MRPharmS EDITORIALSTAFF HannahArnoldBPharm(NZ) NalwengaMutamboMPharm NatashaBell-AsherBPharm(NZ),PGDipClinPharm(NZ) MerushaNaidooBPharm(NZ),PGCertClinPharm(NZ) LucíaCamañasSáezMPharm(ESP),PGDipClinPharm, HanaNumanBPharm(NZ),PGDipClinPharm(NZ) PGCertPsychTherap,MRPharmS BarbaraOkpalaMPharm,PGDipHospPharm RochelleChinBPharm(AU) HeenabenPatelMPharm,PGDipClinPharm,MRPharmS KathleenEagerBPharm LauraPhamBPharm(Hons)(AU) EmilyHendersonBPharm(NZ),PGCertClinPharm(NZ) CatherinePittMPharm,PGDipClinPharm,MRPharmS SueHoBPharm(AU),MRPharmS CaralieseRebelloBPharm(NZ),PGDipClinPharm(NZ) EmmaJonesMPharm SharylRodriguesBPharm(NZ),PGDipClinPharm(NZ) ElizabethKingMAPharmT JannahRyanBSc(Hons) SonalLadaniMPharm,PGDipGPP,IP,MRPharmS BeejalShahMPharm,PGDipClinPharm,IP DavidLipanovicBPharm(NZ),PGCertClinPharm(NZ) LucySheedBPharm(NZ) JohnMartinBPharm,PhD,MRPharmS TadehTahmasiMPharm,MRPharmS SorchaMcCannMPharm,PGDip HarpreetTakharMPharm,MRPharmS DeirdreMcGuirkBComm,MPharm HannahTanBPharm(AU) AnnaMcLachlanBPharm(NZ),PGCertClinPharm(NZ) JuliaWebbMPharm,PGCertPharmPrac LilianaMoreiraVilasBoasMPharm(PT),PGDipHPS(PT), PGCertHSDM(PT),PGCertGPP,MRPharmS SUPPORTSTAFF SophiaAldwinckleBSc(Hons) PhilipLeeBSc,PhD RosalindBarkerBMus,MA RebeccaLuckhurstBSc(Hons),MSc MattBradburyBSc(Hons) OliviaMaskillBSc(Hons) DarrenChanBSc,MSc LonaMehtaMPharm,MRPharmS LaurenCheethamBA(Hons) IbrahimMohammed-AliBSc(Hons),MSc ElainaCrehanMChem(Hons) ChristineParryBSc(Hons),MSc HarrietFiddimore-HicksBSc(Hons),MSc VickyPollingtonBSc(Hons) FilsaneHajiBSc(Hons),MSc CarinaRedigdeCampos RebeccaHarwoodBSc(Hons) LeahRichardsonBPharm(NZ) NickJuddBA(Hons),MA ElisabettaStramiglioBSc,MSc LouiseSymmonsBSc(Hons),MSc