Kernfarm Flubenmix 5%, 50 mg/g Premix for Medicated Feeding Stuff
Active ingredient: Flubendazole
Form
Premix
Species
Manufacturer
Kernfarm B.V.
VMD MA No.
43877/3000
What it's used for
The product is registered for the treatment of adult stages of the helminth species, and, in case of Ascaridia galli, all intestinal larval stages (L2, L3...
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Paying less for Flubendazole
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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.
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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.
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Prescription required
Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.
Kernfarm Flubenmix 5%, 50 mg/g Premix for Medicated Feeding Stuff — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
species, and, in case of Ascaridia galli, all intestinal larval stages (L2, L3 and
L4) and adult stages.
Piglets and weaner pigs:
premix/tonne feed), for 5 days for the treatment of ascariasis and for 10 days for
the treatment of Trichuris spp. infestations. This corresponds to 1.2 mg
AN: 03969/2022 & 00241/2024
flubendazole/kg bw/day (for a standard food consumption of 0.5 kg/day in a
12.5 kg piglet and 1.0 kg in 25 kg weaner pig).
Fattening pigs: 30 ppm flubendazole (equivalent to 600 g premix/tonne feed),
for 5 days for the treatment of ascariasis and for 10 days for the treatment of
Trichuris spp. infestations. This corresponds to 1.2 mg flubendazole/kg bw/day
(for a standard food consumption of 2.0 kg/day in a 50 kg fattening pig).
Chickens: 30 ppm flubendazole (equivalent to 600 g premix/tonne feed), for 7
days. This corresponds to 4.0 mg flubendazole/kg bw/day (for a standard food
consumption of 0.02 kg/day in a 0.15 kg chicken) and corresponds to 1.9 mg
flubendazole/kg bw/day (for a standard food consumption of 0.2 kg/day in a 3.2
kg chicken or 0.115 kg/day in a 1.8 kg chicken).
Turkeys: 20 ppm flubendazole (equivalent to 400 g premix/tonne feed), for 7
days. This corresponds to 0.56 mg flubendazole/kg bw/day (for a standard food
consumption of 0.63 kg/day in a 22.5 kg turkey) and corresponds to 2.35 mg
flubendazole/kg bw/day (for a standard food consumption of 0.045 kg/day in a
0.38 kg turkey).
Geese: 30 ppm flubendazole (equivalent to 600 g premix/tonne feed), for 7
days. This corresponds to 2.0 mg flubendazole/kg bw/day (for a standard food
consumption of 0.55 kg/day in a 8 kg goose).
Pheasants: 60 ppm flubendazole (equivalent to 1200 g premix/tonne feed), for
7 days. This corresponds to 2.7 mg flubendazole/kg bw/day (for a standard food
consumption of 0.045 kg/day in a 1 kg pheasant).
Partridges: 60 ppm flubendazole (equivalent to 1200 g premix/tonne feed), for
7 days. This corresponds to 3.0 mg flubendazole/kg bw/day (for a standard food
consumption of 0.025 kg/day in a 0.5 kg pheasant).
Pre-dilution to incorporate in the feed in the proportion not less than 5 kg / tonne
(i.e. 0.5% m/m).
To ensure a correct dosage, body weight should be determined as accurately
as possible.
If animals are to be treated collectively rather than individually, they should be
grouped according to their bodyweight and dosed accordingly in order to avoid
under- or overdosing.
The intake of medicated feed depends on the clinical condition of the animals.
In order to obtain the correct dosage, the concentration of flubendazole may
need to be adjusted accordingly.
excipients.
Reporting adverse events is important. It allows continuous safety monitoring of
a veterinary medicinal product. Reports should be sent, preferably via a
veterinarian, to either the marketing authorisation holder or the national
competent authority via the national reporting system. See the package leaflet
for respective contact details.
the SPC may increase the resistance selection pressure and lead to reduced
efficacy. The decision to use the veterinary medicinal product should be based
on confirmation of the parasitic species and burden, or of the risk of infection
based on its epidemiological features, for each herd/flock.
Strategies that should be avoided because they might lead to an increased risk
of development of resistance to anthelmintic drugs include:
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an extended period of time
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Suspected clinical cases of resistance to anthelmintics should be further
investigated using appropriate tests (e.g. Faecal Egg Count Reduction Test).
Where the results of the test(s) strongly suggest resistance to a particular
anthelmintic, an anthelmintic belonging to another pharmacological class and
having a different mode of action should be used.
For an effective control of roundworms in poultry, additional measures regarding
disinfection, management and biosecurity are necessary, as advised by the
prescribing veterinarian.
Special precautions for safe use in target species:
Not applicable.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals:
Contact with this veterinary medicinal product may cause skin sensitisation
and/or skin and eye irritation. People with known hypersensitivity (allergy) to
flubendazole should avoid contact with the veterinary medicinal product.
When handling or mixing, care should be taken to avoid direct contact with the
skin and eyes and the inhalation of any dust. Protective clothing, including
AN: 03969/2022 & 00241/2024
overalls, impervious gloves, safety glasses and a face-mask should be worn. It
is recommended to use either a disposable half-mask respirator conforming to
European Standard EN 149 or a non-disposable respirator to European
Standard EN 140 with a filter to EN 143.
Do not smoke, eat or drink while handling the veterinary medicinal product.
Wash your hands after using the veterinary medicinal product or handling the
medicated feed.
In case of skin and/or eye contact, immediately rinse with plenty of water.
If symptoms appear after exposure, such as a skin rash, consult a physician
and take the package leaflet or label with you. Inflammation of the face, lips and
eyes or respiratory distress are more serious signs that require urgent medical
attention.
Special precautions for the protection of the environment:
Not applicable.
None known.
conditions.
Pigs: 3 days.
Chickens: 5 days.
Turkeys, geese, pheasants and partridges: 7 days.
Chicken eggs: 0 days.
Not for use in other birds producing or intended to produce eggs for human
consumption.
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 Flubendazole
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
Alphafluben 44 mg/ml Oral Gel for Dogs
POM-VALPHAVET Zrt.
Flimabend 100 mg/g Suspension for Use in Drinking Water for Chickens and Pigs
POM-VPSKRKA, d.d., Novo mesto
Flimabend 100 mg/g Suspension for Use in Drinking Water for Chickens and Pigs
POM-VPSKRKA, d.d., Novo mesto
Flimabo 100 mg/g Suspension for Use in Drinking Water for Chickens and Pigs
POM-VPSKRKA, d.d., Novo mesto
Flimabo 100 mg/g Suspension for Use in Drinking Water for Chickens and Pigs
POM-VPSKRKA, d.d., Novo mesto
Flubenol 5% w/w Premix for Medicated Feeding Stuff
POM-VPSElanco Europe Ltd
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