Flypor 40 mg/ml Pour-on Solution
Active ingredient: Permethrin (Cis:Trans 80:20)
Form
Spot-on
Species
Manufacturer
Elanco GmbH
VMD MA No.
52127/5067
What it's used for
For the control of flies (particularly biting flies and horn-flies) and lice (including sucking and biting lice), and for the treatment of sarcoptic and ch...
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Paying less for Permethrin (Cis:Trans 80:20)
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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.
Flypor 40 mg/ml Pour-on Solution — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
sucking and biting lice), and for the treatment of sarcoptic and chorioptic mange of
cattle.
10 kg bodyweight up to a maximum of 40 ml.
BodyweightDoseCalves up to 100 kg10 ml101 to 200 kg20 ml201 to 300 kg30 mlOver 300 kg40 ml
The product should be applied using either the calibrated dispensing chamber
incorporated into the applicator bottle, or the flexi-pack with a Elanco Cattle Pour-
On Gun.
Revised: March 2025
AN: 03752/2024
Flies: Apply approximately one quarter of the calculated dose to the top of the
head; the remainder should be poured along the neck and mid-backline.
A single dose is normally sufficient to control flies for up to 8 weeks. The first
treatment should be carried out when the number of flies start to increase. In
cases of heavy infestation, the dose may be repeated at 4 week intervals.
Lice: Apply in the same way as fly dosage. A single dose is normally sufficient to
control all lice. In certain cases of heavy infestation, the dose may be repeated
after 4 weeks.
Sarcoptic and chorioptic mange: The calculated dose should be applied directly to
all visibly affected areas; any remaining should be poured along the backline in
the normal way. The dose should be repeated after 4 weeks.
the product is influenced by prevailing weather conditions and the species of flies
involved.
For external use only.
i) Special precautions for use in animals
Avoid the eyes when applying to the head.
Revised: March 2025
AN: 03752/2024
ii) Special precautions to be taken by the person administering the veterinary
medicinal product to animals
Wear protective clothing, rubber gloves and boots when applying the
product.
Avoid contact with the eyes. If splashed in the eye or on the skin, wash
with plenty of clean, running water immediately.
Do not eat, drink or smoke whilst using the product.
Wash hands and exposed skin before eating, drinking or smoking and after
work.
Use in a well-ventilated area. Do not inhale the vapour.
iii) Other precautions
Care should be taken when applying this product, as it may have an
adverse effect on certain plastics.
The products must be applied only with the Elanco Cattle Pour-On Gun as
the product may have a detrimental effect on certain components of
conventional dosing guns.
Do not store above 25°C.
Store away from food, drink and animal feedstuffs.
Cattle may be slaughtered for human consumption only after 3 days from the last
treatment.
Milk: Cattle producing milk for human consumption should be treated
immediately after milking to allow as long an interval as possible (at least 6 hours)
before the next milking. There is no need to withhold milk from subsequent
milkings.
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 Permethrin (Cis:Trans 80:20)
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
Flypor 40 mg/ml Pour-on Solution
POM-VPSElanco GmbH
Switch 40 mg/ml Pour-on Solution
AVM-GSLVetPlus Ltd
Z-Itch 40 mg/ml Pour-on Solution
AVM-GSLFloris Holding B.V.
Z-Itch 40 mg/ml Pour-on Solution
AVM-GSLFloris Holding B.V.
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