Irish Medicines Board

Transcription

1 IRISH MEDICINES BOARD ACT 1995 EUROPEAN COMMUNITIES (ANIMAL REMEDIES) (No. 2) REGULATIONS 2007 (S.I. No. 786 of 2007) VPA:10778/003/002 Case No: The Irish Medicines Board in exercise of the powers conferred on it by Animal Remedies (No. 2) Regulations (S.I. No. 786 of 2007) hereby grants to: Animalcare Limited Common Road, Dunnington, York YO19 5RU, United Kingdom an authorisation, subject to the provisions of the said Regulations and the general conditions of the attached authorisation, in respect of the Veterinary Medicinal Product: Benazecare 20 mg Film-Coated Tablets for Dogs The particulars of which are set out in Part 1 and Part 2 of the said Schedule. The authorisation is also subject to any special conditions as may be specified in Part 2 of the said Schedule. This authorisation,unless previously revoked, shall continue in force from 24/08/2006 to 24/08/2011. Signed on behalf of the Irish Medicines Board A person authorised in that behalf by the said Board. Date Printed 03/12/2008 CRN page number: 1

2 Part II Summary of Product Characteristics 1 NAME OF THE VETERINARY MEDICINAL PRODUCT Benazecare 20 mg Film-Coated Tablets for Dogs 2 QUALITATIVE AND QUANTITATIVE COMPOSITION Active substance: Each film-coated tablet contains mg benazepril as 20 mg benazepril hydrochloride. Excipient(s): Ferric oxide yellow (E 172) 0.09 mg Ferric oxide red (E 172) 0.11 mg Titanium dioxide (E 171) 1.00 mg For a full list of excipients, see section PHARMACEUTICAL FORM Pink, film-coated, divisible oval tablet. 4 CLINICAL PARTICULARS 4.1 Target Species Dog 4.2 Indications for use, specifying the target species Treatment of congestive heart failure in dogs. 4.3 Contraindications Do not use in any dog that has evidence of cardiac output failure, for example, due to aortic stenosis. Do not use in case of known hypersensitivity to the active substance or to any of the excipients. See Section Special warnings for each target species None. Date Printed 03/12/2008 CRN page number: 2

3 4.5 Special precautions for use Special precautions for use in animals As is routine in cases of chronic renal insufficiency, it is recommended to monitor plasma creatinine and urea during therapy. Special precautions to be taken by the person administering the veterinary medicinal product to animals Pregnant women should take special care to avoid accidental exposure, because ACE inhibitors have been found to affect the unborn child during pregnancy in humans. Wash hands after use. In case of accidental ingestion by children, seek medical advice immediately and show this label to the doctor. 4.6 Adverse reactions (frequency and seriousness) On rare occasions, transient signs of hypotension, such as lethargy and ataxia may occur, especially at the start of treatment. 4.7 Use during pregnancy, lactation or lay Do not use in pregnant or nursing bitches or in bitches intended for breeding. Studies in laboratory animals (rats) have shown embryotoxic effects of benazepril at non-maternotoxic doses (urinary tract abnormalities in the foetus). The safety of the product has not been assessed during pregnancy and lactation in dogs. Laboratory studies in rats and observations in humans have produced evidence of teratogenic effects. 4.8 Interaction with other medicinal products and other forms of interaction None known. In dogs with heart failure, benazepril has been given in combination with digoxin, diuretics and anti-arrhythmic drugs without demonstrable adverse interactions. In man, the combination of ACE inhibitors and NSAIDs can lead to reduced anti-hypertensive efficacy or impaired renal function. The combination of benazepril and other anti-hypertensive agents (e.g. calcium channel blockers, β-blockers or diuretics), anaesthetics or sedatives may lead to additive hypotensive effects. Therefore concurrent use of NSAIDs or other medications with a hypotensive effect should be considered with care. Renal function and signs of hypotension (lethargy, weakness etc) should be monitored closely and treated as necessary. Interactions with potassium preserving diuretics like spironolactone, triamteren or amilorid cannot be ruled out. It is recommended to monitor plasma potassium levels when using benazepril in combination with a potassium sparing diuretic as life threatening reactions are a possibility. Date Printed 03/12/2008 CRN page number: 3

4 4.9 Amounts to be administered and administration route For oral use only. The product should be given orally once daily, with or without food. The duration of treatment is unlimited. The recommended oral dose is 0.25 mg benazepril hydrochloride/kg body weight. The dose may be doubled, still administered once daily, if judged clinically necessary and advised by the veterinary surgeon. The dosing regime is as follows: Weight of dog (kg) Overdose (symptoms, emergency procedures, antidotes), if necessary In healthy dogs overdose up to 200-fold was asymptomatic. Transient reversible hypotension may occur in cases of accidental overdose. Symptomatic treatment should consist of intravenous infusion of warm isotonic saline Withdrawal Period(s) Not applicable. Standard Dose 0.5 tablet/ day 1 tablet/ day 5 PHARMACOLOGICAL or IMMUNOLOGICAL PROPERTIES Pharmacotherapeutic group: ACE Inhibitors, Benazepril. ATC vet code: QC09AA Pharmacodynamic properties BENAZECARE 20 Double Dose 1 tablet/ day 2 tablets/ day Benazepril hydrochloride is a prodrug hydrolysed in vivo to its active metabolite, benazeprilat. Benazeprilat is a highly potent and selective inhibitor of angiotensin converting enzyme (ACE), thus preventing the conversion of inactive angiotensin I to active angiotensin II. Therefore, benazeprilat blocks effects mediated by angiotensin II, including vasoconstriction of both arteries and veins, retention of sodium and water by the kidney and modeling effects (including pathological cardiac hypertrophy). Benazeprilat causes long-lasting inhibition of plasma ACE activity in dogs, with more than 95% inhibition at peak effect and significant activity (>80% in dogs) persisting 24 hours after dosing. Benazeprilat reduces the blood pressure and volume load on the heart in dogs with heart failure. Onset of clinical efficacy can be expected approximately 1 week after initiation of treatment with benazepril hydrochloride. Date Printed 03/12/2008 CRN page number: 4

5 5.2 Pharmacokinetic properties After oral administration of this product, peak levels of benazepril are attained rapidly (t max 20 mins in dogs,) and decline quickly as the drug is partially metabolised by liver enzymes to benazeprilat. In dogs, unchanged benazepril and hydrophilic metabolites account for the remainder. Following administration of this product to dogs at a dose of 0.5 mg/kg benazepril hydrochloride, peak benazeprilat concentrations (C max of 44.4 ng/ml) are achieved with a T max of 1.25 h. The systemic bioavailability of benazepril is incomplete (~13% in dogs) due to incomplete absorption (38%) in dogs) and first pass metabolism. Benazeprilat concentrations decline biphasically: the initial fast phase (t 1/2 =1.7h in dogs) represents elimination of free drug, while the terminal phase (t 1/2 =19h in dogs) reflects the release of benazeprilat that was bound to ACE, mainly in the tissues. Benazepril and benazeprilat are extensively bound to plasma proteins, and in tissues are found mainly in the liver and kidney. There is no significant difference in the pharmacokinetics of benazeprilat when benazepril hydrochloride is administered to fed or fasted dogs. Repeated administration of benazepril leads to slight bioaccumulation of benazeprilat (R=1.47 in dogs with 0.5 mg/kg), steady state being achieved within a few days (4 days in dogs). Benazeprilat is excreted 54% via the biliary and 46% via the urinary route in dogs. The clearance of benazeprilat is not affected in dogs with impaired renal function and therefore no adjustment of benazepril dose is required in cases of renal insufficiency. 6 PHARMACEUTICAL PARTICULARS 6.1 List of excipients Lactose monohydrate Pregelatinized starch Croscarmellose sodium Castor oil, hydrogenated Hypromellose Titanium dioxide (E 171) Macrogol/PEG 8000 Iron oxide red (E 172) Iron oxide yellow (E 172) Talc 6.2 Incompatibilities Not applicable. 6.3 Shelf-life Shelf life of the veterinary medicinal product as packaged for sale: 3 years 6.4 Special precautions for storage Do not store above 25 C. Store in a dry place. Return any halved tablet to the blister pack and use within two days. The blister pack should be inserted back into the cardboard box. Date Printed 03/12/2008 CRN page number: 5

6 6.5 Nature and composition of immediate packaging 2 aluminium/aluminium blister packs, each containing 7 tablets, packed in a cardboard box with a package leaflet. 6.6 Special precautions for the disposal of unused veterinary medicinal products or waste materials Any unused product or waste materials should be disposed of in accordance with national requirements. 7 MARKETING AUTHORISATION HOLDER Animalcare Ltd Common Road Dunnington York, YO19 5RU UK 8 MARKETING AUTHORISATION NUMBER(S) VPA 10778/003/002 9 DATE OF THE FIRST AUTHORISATION/RENEWAL OF THE AUTHORISATION 29 th February DATE OF REVISION OF THE TEXT Date Printed 03/12/2008 CRN page number: 6