Prescribing Update CATHERINE ARMSTRONG – MAY 2014 Summary Hot topics New inhalers NICE guidelines Drug shortages Updated BNF distribution schedules Hot Topic: Domperidone MHRA Alert – 25th April Small increased risk of potentially life-threatening effects on the heart ONLY for nausea and vomiting MAX 7 days treatment ADULT dose – 10mg TDS Check for QT prolongation meds and CYP3A4 inhibitors Review patients at next routine appointment Hot Topic: Strontium Restricted to severe osteoporosis …who cannot use any other treatments Do NOT start in patients who have or had Ischaemic heart disease Peripheral arterial disease Cerebrovascular disease Uncontrolled hypertension STOP if develop any of the above New Inhalers COPD Aclidinium bromide Glycopyrronium bromide Indacaterol + Glycopyrronium Asthma Fluticasone furorate + vilanterol Aclidinium bromide (Eklira Genuir®) LAMA – 400micrograms/dose – TWICE daily for COPD ↑ effect on lung function vs placebo No robust evidence of benefit vs other LAMA options Device: multi-dose dry powder inhaler On some local formularies: North of Tyne Gateshead ? South Tyneside Sunderland ? Durham&Darlington Glycopyrronium bromide (Seebri Breezhaler®) LAMA – 44micrograms/dose – ONCE daily for COPD ↑ effect on lung function, exercise endurance & patient outcomes vs placebo May provide more rapid bronchdilation than tiotropium Needs long term safety data & direct comparator trials Device = capsule based dry powder inhaler On some local formularies: North of Tyne Gateshead ? South Tyneside Sunderland ? Durham&Darlington Indacaterol + Glycopyrronium (Ultibro Breezhaler® LABA+LAMA 85micrograms indacaterol + 43micrograms glycopyronnium ONCE daily for COPD Device = capsule based dry powder inhaler ↑ lung function vs placebo, separates + fluticasone/salmeterol ↓ rate of exacerbations compared to glycopyronnium alone Not considered locally yet Fluticasone furorate + vilanterol (Relvar®) ICS+LABA – 2 strengths 92/22 & 184/22micrograms ONCE daily for asthma Superior to fluticasone furoate alone 92/22 comparable efficacy to fluticasone/salmeterol 250/50 BD CONCERNS re product – MHRA review Not considered locally yet NICE Guidelines CG171: Urinary Incontinence in Women CG172: Myocardial Infarction – secondary prevention Darifenacin, oxybutynin (IR) & tolteridone (IR) – 1st line Omega 3 fatty acids – DO NOT RECOMMEND for 2ndry prevention of MI CG173: Neuropathic Pain – pharmacological management Tramadol not for long-term neuropathic pain control Carbamazepine ONLY for trigeminal neuralgia Drug Shortages - Valsartan Intermittent supply problems – all strengths & forms May last several months A2RA Valsartan Approximate dose conversions * 40mg daily# 80mg daily# 160mg daily# 320mg daily# Candesartan 4mg OD 8mg OD 16mg OD 16-32mg OD Losartan 25mg OD 50mg OD 100mg OD * Dose equivalences are approximate and individual responses may vary so BP should be monitored following the switch and dosing adjusted accordingly, if needed #Valsartan doses may be given as 2 divided doses depending on indication Taken from NHS England Memo 10/3/2014: http://www.medicinesresources.nhs.uk/en/Communities/NHS/SPS-E-and-SEEngland/Medicines-Information/Discontinuation-Supply-Shortage-Memos/Shortage-of-Valsartan-/ Drug shortages – Piroxicam gel Some supplies available NHS prices currenly based on Feldene® gel 60g = £6.00 (was £2.71) 112g = £9.41 (was £5.06) Compared with Ibuprofen 5% gel £2.11 (50g), £4.22 (100g) Ibuprofen 10% gel £5.79 (100g) Drug shortages - various Clomipramine Branded product discontinued Cross-tapering with SSRIs, venlafaxine or duloxetine – specialist use only Example switch to imipramine: Gradually reduce to 75mg/day, stop and start imipramine 50-100mg/day the next day Co-amoxiclav Can be obtained – prices higher than usual 375mg £5.30/21 Use ONLY where clinically appropriate 625mg £6.93/21 Drug shortages – various (2) Amiloride £19.10 per 28 Co-amilofruse 2.5/20 £4.32 per 28 5/40 £5.29 per 28 Co-tenidone 50/12.5 £5.18 per 28 100/25 £5.18 per 28 Is a potassium sparing diuretic needed? Avoid combination products where possible Drug shortages – various (3) Mebeverine 135mg tablets £17.50 per 100 Peppermint oil 0.2ml caps £7.04 per 84 Propranolol 10mg £5.30 (28) 40mg £4.10 (28) 80mg £6.44 (56) Consider alternative beta-blocker HF – bisoprolol, carvedilol and nebivolol = licensed options BNF Distribution From Sept 2013 edition – annually in PRINT Still updated every 6 months (print copy) Online/App versions updated monthly Register for NHS Athens account: http://www.nice.org.uk/mpc/BritishNationalFormulary.jsp Info regarding print distribution: http://www.nice.org.uk/mpc/BritishNationalFormulary.jsp ALL GPs should receive annual PRINT copy to place of work Email BNF@binleys.com