Johnsons Fipronil 50 mg Spot-On Solution for Cats
Active ingredient: Fipronil
Form
Spot-on
Species
Manufacturer
Norbrook Laboratories Limited
VMD MA No.
02000/4329
What it's used for
For the treatment of infestations by fleas (Ctenocephalides ). The product shows immediate insecticidal effect and persistent insecticidal activity against...
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Johnsons Fipronil 50 mg Spot-On Solution for Cats — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 26 Mar 2026.
shows immediate insecticidal effect and persistent insecticidal activity against
new infestations by adult fleas for up to 5 weeks.
The product shows acaricidal efficacy with killing effect against ticks (Ixodes
ricinus) within 48 hours.
Animals should be weighed accurately prior to treatment.
Route of administration: By topical application to the skin.
Dosage: 1 pipette of 0.5 ml per cat (approximately 7.5 – 15 mg/kg).
Method of Administration: Hold upright. Tap the narrow part of the pipette to
ensure the contents are within the main body of the pipette. Break back the
snap-off top from the spot-on pipette along the scored line.
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 contents onto the
skin, preferably at two spots, one at the base of the skull and a second 2-3
cms further back.
It is important to ensure 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 disappear within 24 hours post application.
For optimal control of flea and or tick infestation the treatment schedule can be
based on the local epidemiological situation.
In the absence of safety studies, the minimum treatment interval is 4 weeks.
less than 8 weeks old and/or weighing less than 1 kg.
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 cases of known hypersensitivity to the active substance or to
any of the excipients.
Revised: June 2017
AN: 01078/2016
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 have been reported after use. Exceptionally,
hypersalivation, reversible neurological signs (hyperaesthesia, depression,
nervous signs) or vomiting have been 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).
has been treated prior to exposure to the ticks, the ticks will start to be killed in
the first 24-48 hours after attachment. 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 easily removed by a gentle pull.
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.
Avoid frequent swimming or shampooing of the animal because the
maintenance of effectiveness of the product in these cases has not been
tested.
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.
(i) Special precautions for use in animals
Avoid contact with the animal’s eyes.In the case of accidental eye contact
immediately and thoroughly flush the eyes with water.
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.
There may be an attachment of ticks. For this reason transmission of
infectious diseases cannot be completely excluded if conditions are
unfavourable.
Do not apply the product to wounds or damaged skin.
(ii) Special precautions to be taken by the person administering the
veterinary medicinal product to the 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, immediately and thoroughly rinse eyes with
plain water. If irritation to the eyes persists contact your doctor immediately
and bring with you the package leaflet.
Avoid contents coming into contact with the fingers. If this occurs, wash
hands with soap and water.
Wash hands after use.
Revised: June 2017
AN: 01078/2016
Do not smoke, drink or eat during application.
People with a known hypersensitivity to fipronil or excipients (see section 6.1)
should avoid contact with the veterinary medicinal product.
Treated animals should not be handled until this 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 treated during the early evening, and that recently treated
animals should not be allowed to sleep with owners, especially children.
Keep pipettes in original packaging and dispose of used pipettes immediately.
(iii) Other precautions
The alcohol carrier may have adverse effects on painted, varnished or other
household surfaces or furnishings
This product is flammable. Keep away from heat, sparks, open flame or other
sources of ignition.
Revised: June 2017
AN: 01078/2016
conditions.
Store in the original container in order to protect from light and moisture.
AN: 01078/2016
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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Other Products Containing Fipronil
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
Alfamed 2.5 mg/ml Cutaneous Spray, Solution for Cats and Dogs
POM-VAlfamed
Alfamed 2.5 mg/ml Cutaneous Spray, Solution for Cats and Dogs
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Alfamed Fipronil 134 mg Spot-on Solution for Medium Dogs
NFA-VPSAlfamed
Alfamed Fipronil 134 mg Spot-on Solution for Medium Dogs
NFA-VPSAlfamed
Alfamed Fipronil 2.5 mg/ml Cutaneous Spray, Solution for Cats and Dogs
POM-VAlfamed
Alfamed Fipronil 2.5 mg/ml Cutaneous Spray, Solution for Cats and Dogs
POM-VAlfamed
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