Vetmedin 1.25 mg for dogs 100 capsules
For the treatment of canine congestive heart failure
Vetmedin® 1.25 mg hard capsules.
2. QUALITATIVE AND QUANTITATIVE COMPOSITION OF Vetmedin
Each capsule contains:
Pimobendan 1.25 mg
Titanium Dioxide (E171) 1.2320 mg/capsule
Sunset Yellow (E110) 0.3080 mg/capsule
For a full list of excipients, see section 6.1
3. PHARMACEUTICAL FORM OF Vetmedin
Orange /white in colour.
4. CLINICAL PARTICULARS OF Vetmedin
4.1 Target species
4.2 Indications for use, specifying the target species
For the treatment of canine congestive heart failure originating from valvular insufficiency (mitral and/or tricuspid regurgitation) or dilated cardiomyopathy.
When used in cases of valvular insufficiency in conjunction with frusemide, the product has been shown to improve the quality of life and extend life expectancy in treated dogs.
When used in a limited number of cases of dilated cardiomyopathy in conjunction with frusemide, enalapril and digoxin, the product has been shown to improve the quality of life and to extend life expectancy in treated dogs.
Vetmedin capsules should not be used in cases of hypertrophic cardiomyopathies or clinical conditions where an augmentation of cardiac output is not possible for functional or anatomical reasons (e.g. aortic stenosis).
4.4 Special warnings for each target species
4.5 Special precautions for use
i Special precautions for use in animals
This product should only be used in dogs with cardiac insufficiency. Do not exceed the recommended dose.
ii Special precautions to be taken by the person administering the veterinary medicinal product to animals
Incase of accidental ingestion, seek medical advice immediately and show the package leaflet or label to the physician.
4.6 Adverse reactions (frequency and seriousness)
A moderate positive chronotropic effect and vomiting may occur in rare cases. However, these effects are dose-dependent and may be avoided by reducing the dose in these cases. In rare cases transient diarrhoea, anorexia or lethargy have been observed.
4.7 Use during pregnancy, lactation or lay
In studies with rats and rabbits pimobendan had no effect on fertility and embryotoxic effects only occurred at maternotoxic doses. In experiments with rats it has been shown that pimobendan is excreted into milk.
No information is available on the safety of Vetmedin in pregnant and lactating bitches. Therefore, Vetmedin capsules should only be administered to pregnant and lactating bitches if the expected therapeutic benefits outweigh the potential risk.
4.8 Interaction with other medicinal products and other forms of interaction
The pimobendan-induced increase in contractility of the heart is attenuated in the presence of the calcium antagonist verapamil and the β-antagonist propranolol.
In pharmacological studies no interaction between the cardiac glycoside ouabain and pimobendan was detected.
Amounts to be administered and administration route
See dosing guide below.
Vetmedin capsules should be administered orally (approximately one hour before feeding) at a dose of 0.2 mg to 0.6 mg pimobendan/kg bodyweight perday. The daily dose should be divided into two equal administrations; onehalf of the dose in the morning and the other half approximately 12 hours later.
Determine the bodyweight accurately before prescribing to ensure administration of the correct dosage.
In cases of mild congestive heart failure, a daily dose at the lower end of thedose range may be adequate. If, however, a clear response is not observable within one week, the dosage should be raised.
4.9 Amounts to be administered and administration route (Cont/d)
Note: for smaller dogs, Vetmedin 1.25 mg or 2.5 mg capsules are more suitable.
Daily Pimobendan Dosage: 0.2 – 0.6 mg/kg
Body Weight (kg): Daily Dosage (mg); No. of capsules per administration
< 10 kg: 2.5; 1 tablet (1.25 mg) in the morning and 1 tablet (1.25 mg) in the evening
10-20 kg: 5; 1 tablet (2.5 mg) in the morning and 1 tablet (2.5 mg) in the evening
21-40 kg: 10; 1 tablet (5 mg) in the morning and 1 tablet (5 mg) in the evening
41-60 kg: 20; 2 tablet (5 mg) in the morning and 2 tablets (5 mg) in the evening
> 60 kg: 30; 3 tablet (5 mg) in the morning and 3 tablets (5 mg) in the evening
Vetmedin capsules may be combined with a diuretic treatment such as frusemide.
4.10 Overdose (symptoms, emergency procedures, antidotes), if necessary
In case of overdose symptomatic treatment should be initiated.
4.11 Withdrawal period(s)
5. PHARMACOLOGICAL PROPERTIES OF Vetmedin
Pharmacotherapeutic group: Cardiac stimulant (phosphodiesterase inhibitor)
ATCvet code: QC01CE90
5.1 Pharmacodynamic properties
Pimobendan, a benzimidazole-pyridazinone derivative, is a non-sympathomimetic, non-glycoside inotropic substance with potent vasodilatative properties.
Pimobendan exerts its stimulatory myocardial effect by a mechanism of action: increases in calcium sensitivity of cardiac myofilaments and inhibition of phosphodiesterase (type III). It also exhibits a vasodilatory action through an inhibitory action on phosphodiesterase III activity. The combined evidence from cell culture, laboratory animal and small studies in the target species suggests that the combination of the specific PD properties of pimobendan may reduce the progression of myocardial damage in gogs with MVD and DCM when used together with other standard therapy.
5.2 Pharmacokinetic particulars
Following oral administration of Vetmedin capsules the absolute bio-availability of the active principle is 60 - 63%. Since this bio-availability is considerably reduced when pimobendan is administered with food or shortly thereafter, it is recommended to treat animals approximately 1 hour before feeding.
The volume of distribution is 2.6 l/kg, indicating that pimobendan is distributed readily into the tissues. The mean plasma protein binding is 93%.
The compound is oxidatively demethylated to its major active metabolite (UD-CG 212). Further metabolic pathways are phase II conjugates of UD-CG-212, in essence glucuronides and sulphates.
The plasma elimination half-life of pimobendan is 0.4 ± 0.1 hours which is consistent with a high clearance of 90 ± 19 m1/min/kg and a short mean residence time of 0.5 ± 0.1 hours.
The main active metabolite is eliminated with a plasma elimination half-life of 2.0 ± 0.3 hours. Almost the entire dose is eliminated via faeces.
6. PHARMACEUTICAL PARTICULARS OF Vetmedin
6.1 List of excipients
Citric acid anhydrous
Titanium Dioxide (E171)
Sunset Yellow (E110)
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 25oC.
Store in a dry place.
Store in tightly closed original container.