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Spotinor 10 mg/ml Spot-on Solution for Cattle and Sheep

Active ingredient: Deltamethrin

Form

Spot-on

Species

Cattle Sheep

Manufacturer

Norbrook Laboratories Limited

VMD MA No.

02000/4381

What it's used for

On cattle: For the treatment and prevention of infestations by both sucking and biting lice, including Bovicola bovis, Solenopotes capillatus, Linognathus...

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

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Paying less for Deltamethrin

  1. 1

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  2. 2

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

Prescription required

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Clinical information

Spotinor 10 mg/ml Spot-on Solution for Cattle and Sheep — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.

On cattle: For the treatment and prevention of infestations by both sucking and biting
lice, including Bovicola bovis, Solenopotes capillatus, Linognathus vituli and
Haematopinus eurysternus in beef and dairy cattle. Also as an aid in the treatment
and prevention of infestations of both biting and nuisance flies including Haematobia
irritansStomoxys calcitrans, Musca species and
On sheep: For the treatment and prevention of infestations by ticks Ixodes ricinus
and by lice (Linognathus ovillus, Bovicola ovis), keds (Melophagus ovinus) and
established blowfly strike (usually Lucilia spp).
On lambs: For the treatment and prevention of infestations by ticks Ixodes ricinus
and by lice Bovicola ovis.
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For external use.
Dose:
Cattle: 100 mg of deltamethrin per animal corresponding to 10 ml of veterinary
medicinal product.
Sheep: 50 mg of deltamethrin per animal corresponding to 5 ml of veterinary
medicinal product.
Lambs (under 10 kg bodyweight or 1 month of age): 25 mg of deltamethrin per
animal corresponding to 2.5 ml of veterinary medicinal product.
Administration: Apply a single dose with the special 'Squeeze 'n' Pour' dispenser
pack or the Spot-On Applicator in one spot on the mid-line of the back at the
shoulders.
For blowfly strike on sheep, see following specific indication directions.
Lice on cattle
of all lice may take 4 - 5 weeks during which time lice hatch from the eggs and are
killed. A very few lice may survive on a small minority of animals.
Flies on cattle: For the treatment and prevention of infestations by biting and non-
biting flies. Where horn-flies predominate, treatment and prevention of infestations
can be expected for 4 - 8 weeks. Treatment for flies should not be repeated within
four weeks.
Ticks on sheep: Application to the mid-point of the shoulders will provide useful
treatment and prevention of infestations by ticks attaching to animals of all ages, for
up to 6 weeks after treatment.
Keds and lice on sheep:
short or long fleece will reduce the incidence of a biting louse or ked infestation over
a 4 - 6 week period after treatment.
It is advisable to:
- treat shortly after shearing (animals with short fleece),
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- keep treated sheep separated from untreated sheep to avoid re-infestation.
N.B. For treatment and prevention of infestations by ticks, keds and lice on sheep,
the fleece should be parted and the Spot-On applied to the skin of the animal.
Established blowfly strike on sheep: Apply directly to the maggot infected area as
soon as the fly strike is seen. One application will ensure blowfly larvae are killed in
a short time. In the case of more advanced strike lesions, clipping out of stained
wool before treatment is advisable.
Lice and ticks on lambs:
useful treatment and prevention of infestations by ticks for up to 6 weeks after
treatment, and will reduce the incidence of biting lice over a 4-6 week period after
treatment.
Do not use on convalescent or sick animals.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
Target species: Cattle.
Very rare
(<1 animal / 10,000
animals treated,
including isolated
reports):
Squamosis
, Pruritus
1
Observed within 48 hours after treatment.
Target species: Sheep.
None known.
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.
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To avoid resistance, the product should only be used if the susceptibility of the local
fly population to the active substance is assured.
Cases of resistance to deltamethrin have been reported in stinging and nuisance
flies in cattle and lice in sheep.
The product will reduce the number of flies resting directly on the animal but it is not
expected to eliminate all flies on a farm. The strategic use of the product should,
therefore, be based on local and regional epidemiological information about
susceptibility of parasites, and used in association with other pest management
methods.
Care should be taken to avoid the following practices because they increase the risk
of development of resistance and could ultimately result in ineffective therapy:
- too frequent and repeated use of ectoparasiticides from the same class over an
extended period of time;
- underdosing which may be due to underestimation of bodyweight,
misadministration of the product, or lack of calibration of the dosing device.
If clinical signs do not resolve following treatment, the diagnosis should be revised.

Special precautions for safe use in the target species:
The product is for external use only.
Do not apply on or near the animal’s eyes and mucous membranes.
Care should be taken to prevent licking of the product. Avoid use of the product
during extremely hot weather and ensure animals have adequate access to water.
The product should only be administered onto undamaged skin as toxicity is possible
due to absorption from major skin lesions. However, signs of local irritation may
occur after treatment as skin may be already affected by infestation.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
People with hypersensitivity to deltamethrin or medium-chain triglycerides should
avoid contact with the veterinary medicinal product.
Personal protective equipment consisting of waterproof apron, boots and impervious
gloves should be worn when handling the veterinary medicinal product.
Remove heavily contaminated clothing immediately and wash before use.
Wash splashes from skin immediately with soap and plenty of water.
Wash hands and exposed skin after handling this product and before meals.
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In case of contact with eyes, rinse immediately with plenty of clean, running water
and seek medical advice and show the package leaflet or the label to the physician.
In case of accidental ingestion, wash out mouth immediately with plenty of water and
seek medical advice immediately and show the package leaflet or the label to the
physician.
Do not smoke, drink or eat while handling the product.
This product contains deltamethrin which may produce tingling, itchiness and blotchy
redness on exposed skin. If you feel unwell after working with this product, consult
your doctor and show this label.
To the physician:
Advice on clinical management is available from the National Poisons Information
Service.
Special precautions for the protection of the environment:
Deltamethrin is very toxic to dung fauna, aquatic organisms and honey bees, is
persistent in soils and may accumulate in sediments.
The risk to aquatic ecosystems and dung fauna can be reduced by avoiding too
frequent and repeated use of deltamethrin (and other synthetic pyrethroids) in cattle
and sheep, e.g. by using a single treatment per year on the same pasture.
The risk to aquatic ecosystems will be further reduced by keeping treated cattle
away from water bodies for four weeks after treatment.
Other precautions:
Extra-label use of the product in the non-target species dogs and cats can lead to
toxic neurological signs (ataxia, convulsions, tremors), digestive signs
(hypersalivation, vomiting) and may be fatal.
Do not use with any other insecticide or acaricide. The toxicity of deltamethrin is
enhanced in combination with organophosphorous compounds, in particular.
Store below 25 °C.
Do not freeze
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Keep the dispenser bottle in the outer carton in order to protect from light.
Cattle:
Meat and offal: 17 days.
Milk: zero hours.
Sheep:
Meat and offal: 35 days.
Milk: Not authorised for use in ewes 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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