NOAH Compendium

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Date: Wednesday, May 22, 2024 17:22

Description: Virbac 2013
Release 2.204
LEUCOGEN suspension for injection for cats
Species: Cats
Therapeutic indication: Immunological veterinary medical products: For cats
Active ingredient: Vaccine Antigens
Product index: Leucogen
Pharmaceutical form
Suspension for injection.
Opalescent liquid.
Qualitative and quantitative composition
Per dose of 1 ml:
Active substance
Minimum quantity of purified p45 FeLV-envelope antigen 102 µg
3% aluminium hydroxide gel expressed as mg Al3+ 1 mg
Purified extract of Quillaja saponaria 10 µg
Buffered isotonic solution to 1ml
Sodium chloride
Disodium phosphate anhydrous
Potassium dihydrogen phosphate
Aluminium hydroxide gel
Quillaja saponaria
Water for injections
Target species
Indications for use, specifying the target species
Active immunisation of cats from eight weeks of age against feline leukaemia for the prevention of persistent viraemia and clinical signs of the related disease.
The onset of immunity has been demonstrated from 3 weeks after the primary vaccination.
After the primary vaccination course, the duration of immunity lasts for one year.
Following a first booster vaccination one year after the primary vaccination course, a duration of immunity of 3 years has been demonstrated.
Dosage and administration
Subcutaneous use.
Shake the vial gently and administer subcutaneously one dose (1 ml) of the veterinary medicinal product according to the following regimen of vaccination.
Primary course vaccination
first injection in kittens from eight weeks of age
second injection 3 or 4 weeks later.
Maternally derived antibodies can negatively influence the immune response to vaccination. In such cases where maternally derived antibodies are expected, a third injection may be appropriate from 15 weeks of age.
Following a first booster vaccination one year after the primary vaccination course, subsequent vaccination can be performed at intervals of three years.
Contra-indications, warnings, etc
Special warnings for each target species
Vaccinate healthy animals only.
Special precautions for use in animals
De-worming at least 10 days prior to vaccination is recommended.
Only feline leukaemia virus (FeLV) negative cats should be vaccinated. Therefore, a test for presence of FeLV before vaccination is recommended.
Special precautions to be taken by the person administering the veterinary medicinal product to animals
In case of accidental self-injection, seek medical advice immediately and show the package leaflet or the label to the physician.
Adverse reactions (frequency and seriousness)
A moderate and transient local reaction (<2 cm) is commonly observed after the first injection. This local reaction could be a swelling, an oedema or a nodule and resolves spontaneously within from 3 to 4 weeks at the most. After the second injection, and subsequent administrations, this reaction is markedly reduced. The transient signs following vaccination such as hyperthermia (lasting 1 to 4 days), apathy and digestive disturbances (such as emesis and diarrhoea) may also be commonly observed.
Pain at palpation, sneezing or conjunctivitis may be noted in rare cases. This resolves without any treatment.
Anaphylactic reactions have been reported in very rare cases. In case of anaphylactic shock, appropriate symptomatic treatment should be administered. The frequency of adverse reactions is defined using the following convention:
- very common (more than 1 in 10 animals treated displaying adverse reactions)
- common (more than 1 but less than 10 animals in 100 animals treated)
- uncommon (more than 1 but less than 10 animals in 1,000 animals treated)
- rare (more than 1 but less than 10 animals in 10,000 animals treated)
- very rare (less than 1 animal in 10,000 animals treated, including isolated reports).
Use during pregnancy, lactation or lay
Do not use in pregnant cats.
The use is not recommended during lactation.
Interaction with other medicinal products and other forms of interaction
Safety and efficacy data are available which demonstrate that this vaccine can be mixed and administered with FELIGEN CRP or FELIGEN RCP. No information is available on the safety and efficacy of this vaccine when used with any other veterinary medicinal product except the products mentioned above. A decision to use this vaccine before or after another veterinary medicinal product therefore needs to be made on a case by case basis.
Overdose (symptoms, emergency procedures, antidotes), if necessary
No adverse reactions were observed after an overdose administration (2 doses) of the veterinary medicinal product other than those mentioned in section 'adverse reactions' except local reactions that can last longer (from 5 to 6 weeks at the most).
Withdrawal period(s)
Not applicable.
Pharmaceutical precautions
Major incompatibilities
Do not mix with any other veterinary medicinal product except FELIGEN RCP or FELIGEN CRP.
Shelf life
Shelf life of the veterinary medicinal product as packaged for sale: 2 years.
Shelf life after first opening the immediate packaging: use immediately.
Special precautions for storage
Store and transport refrigerated (2 °C – 8 °C).
Do not freeze.
Protect from light
Special precautions for the disposal of unused veterinary medicinal product or waste materials derived from the use of such products
Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements.
Legal category
Legal category: POM-V
Packaging quantities
Plastic or cardboard box of 10 vials.
Plastic or cardboard box of 50 vials.
Not all pack sizes may be marketed.
Type I glass vials containing one dose (1 ml) of the vaccine closed with a 13mm diameter butyl elastomer stopper and aluminium capsule.
Further information
Immunological properties
Pharmacotherapeutic group: immunologicals for Felidae, inactivated viral vaccines for cats. ATCvet code: QI06AA01.
Vaccine against feline leukaemia.
The vaccine contains the purified p45 FeLV-envelope antigen, obtained by genetic recombination of the E. coli strain. The antigenic suspension is adjuvanted with an aluminium hydroxide gel and with a purified extract of Quillaja saponaria.
Protection against persistent viraemia is observed in 73% of cats 3 weeks after their first vaccine injection.
Marketing Authorisation Number
Significant changes
GTIN description:Leucogen (10 doses)
GTIN description:Leucogen (50 doses)