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NFA-VPS Over the Counter Companion Animal

Flevox 50 mg Spot-on Solution for Cats

Active ingredient: Fipronil

Form

Spot-on

Species

Cats

Manufacturer

Vetoquinol UK Limited

VMD MA No.

08007/5055

What it's used for

In cats: Treatment of flea (Ctenocephalides spp.) and tick (Rhipicephalus sanguineus) infestations. Insecticidal efficacy against new infestations with adu...

Full indications, dosage and side effects ↓
View official SPC (PDF)

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Paying less for Fipronil

  1. 1

    Ask your vet for a written prescription

    They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.

  2. 2

    Fill it at a registered online retailer

    The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.

Clinical information

Flevox 50 mg Spot-on Solution for Cats — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 26 Mar 2026.

In cats:
Treatment of flea (Ctenocephalides spp.) and tick (Rhipicephalus sanguineus)
infestations.
Insecticidal efficacy against new infestations with adult fleas persists for up to 4
weeks. Newly arriving fleas are killed within 48 hours of landing on the animal. The
product can be used as part of a treatment strategy for flea allergy dermatitis (FAD)
where this has previously been diagnosed by a veterinary surgeon.
The product has a persistent acaricidal efficacy for up to 1 week against ticks
(Rhipicephalus sanguineus and . If ticks of
reticulatus are present when the product is applied, all the ticks may not be killed
within the first 48 hours, but they may be killed within a week.
For external use only.
Spot-on use.
Animals should be weighed accurately prior to treatment.
Apply topically to the skin 1 pipette of 0.5 ml per cat.
The minimum treatment interval is 4 weeks.
Method of Administration:
Part the coat between the shoulder blades until the skin is visible. Place the tip of the
pipette on the skin and squeeze gently to empty its content onto the skin.
It is important to make sure that the product is applied to an area where the animal
cannot lick it off, and to make sure that animals do not lick each other following
treatment.
Care should be taken to avoid excessive wetting of the hair with the product since
this will cause a sticky appearance of hairs at the treatment spot. However, should
this occur, it will generally disappear within 24 hours post application but can persist
for up to 2 weeks.
Do not use on kittens less than 8 weeks old and/or weighing less than 1 kg in the
absence of available data.
Do not use on sick (systemic diseases, fever…) or convalescent animals.
Do not use in rabbits, as adverse drug reactions and even death could occur.
Do not use in case of hypersensitivity to fipronil or to any of the excipients.
Do not administer orally.

Revised: December 2025
MA split from NI Expiry following AN: 02302/2025Page 2 of 5
If licking occurs, a brief period of hypersalivation may be observed due mainly to the
nature of the carrier.
Among the extremely rare suspected adverse reactions, transient cutaneous
reactions at the application site (scaling, local alopecia, pruritus, erythema) and
general pruritus or alopecia could occur after use. Exceptionally, hypersalivation,
reversible neurological signs (hyperaesthesia, depression, nervous signs), vomiting
or respiratory signs could be observed after use.
The frequency of adverse reactions is defined using the following convention:
- very common (more than 1 in 10 animals displaying adverse reaction(s) during the
course of one treatment)
- common (more than 1 but less than 10 animals in 100 animals)
- uncommon (more than 1 but less than 10 animals in 1,000 animals)
- rare (more than 1 but less than 10 animals in 10,000 animals)
- very rare (less than 1 animal in 10,000 animals, including isolated reports).
Fleas from pets often infest the animal’s basket, bedding and regular resting areas
such as carpets and soft furnishings which should be treated, in case of massive
infestation and at the beginning of the control measures, with a suitable insecticide
and vacuumed regularly.
Ticks already on the animal prior to treatment may not be killed within the first 48
hours after application of the product, but they may be killed within a week. Removal
of ticks already on the animal at the time of application is recommended. The
product does not prevent ticks from attaching to the animal. If the animal has been
treated prior to exposure to the ticks, most ticks will be killed within 48 hours of
infestation. This will usually be prior to engorgement, minimising but not excluding
the risk of transmission of diseases. Once dead, ticks will often drop off the animal,
but any remaining ticks may be removed with a gentle pull.
No data on the effect of bathing/shampooing on the efficacy of the product are
available. Therefore, bathing or immersion in water within 2 days of application and
more frequent bathing than once a week should be avoided.
For optimum control of flea problems in a multi-pet household, all dogs and cats in
the household should be treated with a suitable insecticide.
When used as part of a strategy for the treatment of Flea Allergy Dermatitis, monthly
applications to the allergic patient and to other cats and dogs in the household are
recommended.

i) Special precautions for use in animals
Avoid contact with the animal’s eyes. In case of accidental eye contact, rinse
immediately with plenty of water.
Do not apply the product on wounds or damaged skin.
Specific studies investigating the safety of the product following repeated
administration have not been conducted due to the known safety profile of the active
substance and excipients.
ii) Special precautions to be taken by the person administering the
veterinary medicinal product to animals
This product can cause mucous membrane and eye irritation. Therefore, contact of
the product with mouth and eyes should be avoided.
In case of accidental eye contact, rinse immediately with plenty of water. If the
irritation persists, seek medical advice and show the label or the package leaflet to
the physician.
Avoid contents coming into contact with the fingers. If this occurs, wash hands with
soap and water. Wash hands after use.
Do not smoke, drink or eat during application.
People with a known hypersensitivity to fipronil or any excipient should avoid contact
with the product.
Treated animals should not be handled until the application site is dry, and children
should not be allowed to play with treated animals until the application site is dry. It is
therefore recommended that animals are not treated during the day, but should be

Revised: December 2025
MA split from NI Expiry following AN: 02302/2025Page 3 of 5
treated during the early evening, and that recently treated animals should not be
allowed to sleep with owners, especially children.
Keep pipettes in the original packaging and dispose of used pipettes immediately.
None known
Not applicable.
5.

This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.

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