Dysect Sheep Pour-on Solution 12.5 g/l
Active ingredient: Alpha-Cypermethrin
Form
Spot-on
Species
Manufacturer
Zoetis UK Limited
VMD MA No.
42058/5160
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Paying less for Alpha-Cypermethrin
-
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.
Dysect Sheep Pour-on Solution 12.5 g/l — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
outlets and is applied directly onto the wool in a band from the back of the head
to the base of the tail. For the reduction of headfly strike 5 ml per animal is
applied between the horns, irrespective of size of the animal.
Blowfly - For the control of blowfly a single application will normally provide 8 to
10 weeks protection. Re-treatment may be necessary after this period. For the
treatment of blowfly strike, a single treatment applied to the infected area will
ensure blowfly larvae are killed.
Ticks - A single treatment will normally provide control of ticks for 8 to 12 weeks.
Headfly - A single treatment will reduce the incidence for up to 6 weeks.
Lice - A single treatment will normally kill all lice.
DOSAGE (ml)PESTSHEEP (>25KG)LAMBS (<25KG)Blowfly 4025Lice40Ticks40Headfly55
Do not treat animals in very hot weather.
Very rare
(<1 animal / 10,000 animals treated,
including isolated reports):
Fleece discolouration
1
Observed from approximately 6 to 8 weeks after treatment.
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.
Special precautions for safe use in the target species:
For external use only.
Because alphacypermethrin is retained in the wool grease of the fleece, it is
recommended that the product be applied to sheep with a minimum wool length
of 1.0 cm.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals:
Personal protective equipment consisting of waterproof apron, boots, and
impervious gloves should be worn when handling the veterinary medicinal
product and recently treated animals.
Use the product in a well-ventilated area.
Wash any splashes from the skin and eyes immediately, using plenty of water.
Remove heavily contaminated clothing immediately and wash before re-use.
Wash hands and exposed skin with soap and water after treatment and before
eating drinking and smoking.
Special precautions for the protection of the environment:
Not applicable.
None known.
Do not freeze.
If contents freeze, they must be thawed and thoroughly mixed before use.
Store in the original container.
Keep the container tightly closed.
Store in a dry place.
Protect from direct sunlight.
Store away from food, drink, and animal feeding stuffs.
Milk: Not permitted for use in animals producing milk 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 Alpha-Cypermethrin
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
Dysect Cattle Pour-On Solution 15 g/litre
POM-VPSZoetis Belgium S.A.
Dysect Cattle Pour-On Solution 15 g/litre
POM-VPSZoetis UK Limited
Dysect Sheep Pour-on solution 12.5 g/l
POM-VPSZoetis Belgium S.A.
Zermasect Sheep Pour-on Alphacypermethrin 12.5 g/l Pour-on Solution
POM-VPSZoetis Belgium S.A.
Zermasect Sheep Pour-on Alphacypermethrin 12.5 g/l Pour-on Solution
POM-VPSZoetis UK Limited
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