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Novartis Rearguard for Rabbits

  • 25ml Bottle £33.49

Novartis Rearguard is an aid to prevent Blowfly strike on domestic rabbits from the age of 10 weeks. Rear Guard is effective through preventing any fly eggs from hatching into maggots. It does not kill maggots or repel flies. Flies will tend to lay their eggs on the rear end of rabbits if they are moist and unclean. This is usually down to diarrhoea or incontinence. Although Rear Guard will prevent fly strike for 10 weeks after application, it is still worth trying to deal with any underlying problem too. Diarrhoea is often a dietary problem and can respond to an increased fibre and lower carbohydrate diet. Veterinary advice regarding this should be taken where appropriate.


A clear solution containing 6% cyromazine.


For the prevention of blowfly strike (Lucilia sericata) in domestic rabbits up to10 weeks after dosing.

Dosage and administration

Rearguard comes supplied ready-to-use in a bottle with built-in applicator sponge. Gently depress the sponge to break the valve before applying. Apply the product using the sponge applicator, ensuring that the rabbit fur is thoroughly wetted with the solution from the middle of the back to the tip of the tail. Ensure that the entire bottle is applied. Special attention should be paid to the areas under the tail and between the back legs. Do not allow the product to run off the animal. Discard any unused product after application. Rabbits should be first treated in early summer before any flies are seen. Rearguard will not kill adult maggots but works by preventing any eggs laid by flies developing. Rabbits should be treated at 8-10 week intervals under conditions of repeated blowfly challenge. Rearguard does not repel flies but it will prevent any maggots from forming and damaging the animal. If the rabbit is continually attractive to flies, this may be due to an underlying disease e.g. diarrhoea or incontinence, or a lack of hygiene within its housing. In such cases further advice should be sought from your veterinary surgeon. In cases of existing flystrike, adult maggots should be removed by mechanical means and appropriate supportive treatment given. Rearguard should then be applied to the fur to prevent development of new larvae and re-strike.

Contra-indications, warnings, etc

Treated rabbits may show a temporary reduction in appetite in the 24-48 hours following treatment. Not to be used in pregnant or breeding females. Do not apply to broken skin. Not to be used in rabbits intended for human consumption. Not to be used on rabbits less than 10 weeks of age. For external use only. For animal treatment only. Wash hands and exposed skin after use. Wash splashes from skin and eyes immediately. Do not smoke whilst using this product. Care should be taken in the treatment of old, sick or debilitated rabbits.

Pharmaceutical precautions

Protect from frost or direct sunlight.

Do not store above 25°C.

Shake container before use.

Store in tightly closed original container.

Unused product should be returned to the veterinary surgeon.

Dispose according to local requirements

Keep out of sight and reach of children.

Legal category


Packaging Quantities

25ml bottles

Further information

Bathing the animal may result in reduction in efficacy of the product and may require more frequent application. In cases of existing flystrike, adult maggots should be removed by mechanical means and appropriate supportive treatment given. Rearguard should then be applied to the fur to prevent development of new larvae and re-strike.

Pharmacological Properties

Pharmacotherapeutic group: Antiparasitic products, insecticides and repellents.

Other ectoparasiticides for topical use.

ATC Vet Code QP53AX

Pharmacodynamic Properties

Cyromazine is an insect growth regulator. It is not pharmacologically active in mammals.

Pharmacokinetic particulars

Dermal absorption rate a maximum of 10% of dose over 8 hours.

Cyromazine rapidly excreted in mammals and birds.

Pharmaceutical Particulars

List of excipients

Methyl parabenzoate

Ethyl parabenzoate

Propyl parabenzoate

Lactic acid edible 80

Acetic acid glacial

Propylene glycol

Octylphenol ethoxylate

Silicone emulsion

Water de-ionised


None known

Shelf Life

Shelf life of veterinary medicinal product as packaged for sale: 3 years.

Marketing authorisation number


GTIN (Global Trade Item No)



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