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Virbagen Omega for Dogs & Cats

Virbagen Omega for Dogs & Cats

Virbagen Omega is a unique product containing a form of feline interferon. This is given by injection to treat certain viral infections and immune problems in both cats and dogs. The mechanism of action is not fully understood, but it has been found in clinical trials to be of benefit in such things as Parvo virus infection in dogs and Feline Leukamia virus infection. The precise treatment schedule has to be followed exactly to get the best results. For further information, see the datasheet below.

Description

Name of the Veterinary Medicinal Product

Virbagen Omega 10 MU for cats and dogs.

Qualitative and quantitative composition

Vial containing lyophylisate.

Active substance 10 MU presentation:

Recombinant omega interferon of feline origin 10 MU*/vial.

*MU: Million units.

Excipients:

Sodium chloride, D-sorbitol, gelatin.

Vial containing solvent: isotonic sodium chloride solution 1ml.

Pharmaceutical form

Powder and solvent for suspension for injection.

Immunological properties

Pharmaceutical group: ATC vet-Code: QL03 AB.

The exact mechanism of action of omega interferon is not perfectly known, but may involve the enhancement of the non-specific defence of the body, in particular in the dog against canine parvovirosis. Interferon does not act directly and specifically against the pathogenic virus, but exerts its effect by inhibition of the internal synthesis mechanisms of the infected cells. Omega interferon of feline origin, produced by genetic engineering, is a type 1 interferon related to alpha interferon. After injection it is quickly bound to specific receptors of a large variety of cells. It is mainly in cells infected by the virus that the mechanism of replication is stopped both by destruction of mRNA and by inactivation of translation proteins (2’ 5’ oligo-adenylate synthetase activation).

Clinical particulars

Target species: Dogs and Cats

Indications, contra-indications, undesirable effects

For the reduction in mortality and clinical signs of parvovirosis (enteric form) in dogs from one month of age.

Vaccination during and after Virbagen Omega treatment is contra-indicated until the dog appears to have recovered.

Cats :

Treatment of cats infected with FeLV and/or FIV, in non-terminal clinical stages, from the age of 9

weeks. In a field study conducted, it was observed that there was :

- a reduction of clinical signs during the symptomatic phase (4 months)

- a reduction of mortality :

• in anaemic cats, mortality rate of about 60% at 4, 6, 9 and 12 months was reduced by approximately 30% following treatment with interferon.

• in non-anaemic cats, mortality rate of 50 % in cats infected by FeLV was reduced by 20% following treatment with interferon. In cats infected by FIV, mortality was low (5%) and was not influenced by the treatment.

In some cases during treatment the following transient clinical signs may be onserved:

Hyperthermia (3-6 hours after injection)

Vomiting

Soft faeces to mild diarrhoea, in cats only.

In addition, a slight decrease in white blood cells, platelets and red blood cells, and rise in the concentration of alanine aminotransferase may be observed. These parameters return to normal in the week following the last injection.

Transient fatigue during the treatment, in cats only.

Special precautions for use

Dogs and cats: it was shown that strict compliance with the recommended posology is compulsory to achieve clinical benefit.

Cats: In case of repeated treatments of chronic diseases associated with hepatic, cardiac and renal failure, the corresponding disease has to be monitored prior to administration of VIRBAGEN OMEGA. Fluid therapy and other supplementary supportive treatment are necessary to improve prognosis.

The product should be used with the accompanying solvent only.

Pregnancy and lactation

The safety of Virbagen Omega has not been established during pregnancy and lactation.

Interactions with other medicaments and other forms of interaction

The use of supplementary supportive treatments improves prognosis. No interaction has been observed during the treatment with VIRBAGEN OMEGA together with antibiotics, solution for rehydration, vitamins and non steroidal anti-inflammatory agents. However, as specific information on possible interactions of interferon with other products are missing, supplementary supportive treatments should be used cautiously and after a thorough risk/benefit analysis.

No information is available on the safety and efficacy from the concurrent use of this product with any other vaccine. For dogs, it is recommended that no vaccines should be administered until the animal appears to have recovered. Cat vaccination during and after VIRBAGEN OMEGA treatment is contraindicated as both FeLV and FIV infections are known to be immunosuppressive.

Dosage and method of administration

The freeze-dried fraction must be reconstituted with 1 ml of the specific diluent to obtain a solution containing 10 MU of recombinant interferon.

Dogs:

The reconstituted product should be injected intravenously once daily for 3 consecutive days. The dose is 2.5 MU/kg bodyweight.

Cats:

The reconstituted product should be injected subcutaneously once daily for 5 consecutive days. The dose is 1 MU/kg bodyweight. Three separate 5-day treatments must be performed at day 0, day 14 and day 60.

Overdose

After a tenfold overdose in both dog and cat the following clinical signs have been observed :

• mild lethargy and drowsiness

• slight increase of body temperature.

• slight increase of respiratory rate

• slight sinus tachycardia.

These clinical signs disappear within 7 days without any particular treatment.

Special warnings

No information on the induction of long-term side effects is available in dog and cat, especially for autoimmune disorders. Such side effects have been described after multiple and long-term administration of type I interferon in man. The possibility of occurrence of autoimmune disorders in treated animals cannot therefore be ruled out and has to be balanced with the risk associated with FeLV/FIV infections.

Efficacy of the product on cats with a tumorous form of the infection by FeLV, or cats infected by FeLV or coinfected by FIV in terminal stages was not tested.

In the case of intravenous administration in cats, increased adverse reactions may be seen, e.g. hyperthermia, soft faeces, anorexia, decreased drinking or collapse.

Withdrawal period

not applicable.

Special precautions to be taken by the person administering the medicinal product to animals:

In case of accidental self-injection, seek medical advice immediately and show the package insert or the label to the physician.

Pharmaceutical particulars

Incompatabilities

do not mix with any other vaccine/immunological product, except the solvent supplied for use with the product.

Shelf life

2 years

Special precautions for storage

Store and transport at 4° C ± 2° C. Do not freeze. Store in the original carton.

Nature and contents of container

Presentation of 10 MU per vial:

Box containing 5 vials (glass with stopper) of powder fraction and 5 vials (glass with stopper) with 1 ml of solvent.

Box containing 2 vials (glass with stopper) of powder fraction and 2 vials (glass with stopper) with 1 ml of solvent.

Special precautions for the disposal of unused medicinal product or waste material

any unused product or waste materials should be disposed of according to local requirements.

Other information

FOR ANIMAL TREATMENT ONLY. KEEP OUT OF THE REACH OF CHILDREN

Name and address of the marketing authorisation holder

Virbac SA

L.I.D. 1ere Avenue – 2065m

F-06516 CARROS – FRANCE

Marketing authorisation numbers

VIRBAGEN OMEGA (5 x 10MU) EU/2/01/030/002

VIRBAGEN OMEGA (2 x 10MU) EU/2/01/030/004

Need help or advice? Contact us:

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All prices include VAT where applicable.

Reviews of Virbagen Omega for Dogs & Cats

Read our customers' reviews of Virbagen Omega for Dogs & Cats

Questions & Answers for Virbagen Omega for Dogs & Cats

Below are some recent questions we've received regarding Virbagen Omega for Dogs & Cats, including answers from our team.

Ask Your Own Question

Side effects of Interferon

25th Mar 2015
Paula Sibley

Our cat is on Interferon for Calicivirus and he tears at his fur nearly all the time. Also tonight after a bout of this his gums bled quite a lot. Are these side effects of Interferon?

John Cousins
  • Veterinary Surgeon at VioVet

These are not usual side effects with this treatment. Cats which remove their own fur are not unusual and this behaviour is normally associated with allergies affecting the skin (especially flea bites) or sometimes stressed/nervous behaviour (a habit a bit like people biting their nails). I would see your vet about this, or contact a cat behaviourist.

Is it can help to cat that was diagnosed with dry form FIP?

9th Mar 2015
Alona Zakuta

Our kitty is 4 years old was diagnosed with dry form FIP one year ago,in USA,since she is getting POlyprenyl immunostimulant,just want to know if it's can be more helpful to give her as well Feline omega interferon with in,now we living in Israel
Thank u for your attention and time!

John Cousins
  • Veterinary Surgeon at VioVet

This product has abeen shown to have some beneficial effects in some cats with FIP, but the results tend to be variable and not dramatically better than in untreated patients.I do not think it will cause any harm and so if you an afford it, it might well be worth trying.

Interferon and calici

7th Mar 2015
Anthony

My kitten's test for calici has come back with a low grade infection. I have been told that a course of interferon can clear that and make him non infectious to other cats. Help please!

John Cousins
  • Veterinary Surgeon at VioVet

This interferon product does help cats to fight viral infections, but it is not as clear cut as you suggest. It seems to be a safe enough treatment and he is likely to benefit from a course of treatment, but the extent to which it will help seems to vary from cat to cat. If the infection is low-grade, there might not be any requirement to treat him at all. If however his symptoms warrant it, then if you can afford the treatment it is sensible to provide it.

Wet FIP n virbagen for cat

28th Nov 2014
Tamar

I have heard virbagenvirbagen and PI are helpful or rather have been somewhat successful in helping cats with FIP the dry version. Will this help my 7 month old kitten with wet FIP. She still likes to eat n lay by my side yet she is anorexic lethargic n the vet drew yellow liquid out of her belly. ....would this ease her discomfort her symptoms? I'm desperate here...

John Cousins
  • Veterinary Surgeon at VioVet

The effusive form of FIP does sometimes show a response to this drug, particularly if given early on in the development of the condition. Results are variable but occasionally are very good, so it would certainly be worth discussing this with your vet. We can supply it on receipt of a written prescription from your vet.

Use for treatment of gingivitis related to Calicivirus

22nd Oct 2014
Sharon

Please can you advise whether this product would be effective in treating gingivitis in a cat with Calicivirus? If it is, how long would a course of treatment be? Thanks.

John Cousins
  • Veterinary Surgeon at VioVet

Virbagen Omega has certainly been used for this problem with reasonable success. It is certainly not an instant and lasting cure, but it has been shown to reduce the severity of the problem. Any particular case of this unpleasant condition will possibly have other viral complicating factors which can affect the result. If you can afford the treatment it is probably worth a try, but it does not always achieve as much as had been hoped for.

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