POM-VPS
Prescription Required
Deltanil 10 mg/ml Pour-on Solution for Cattle and Sheep
Active ingredient: Deltamethrin
Form
Spot-on
Species
Cattle
Sheep
Manufacturer
Virbac
VMD MA No.
05653/5074
What it's used for
On cattle: For the treatment and prevention of infestations by both sucking and biting lice, including and Haematopinus eurysternus. Also as an aid in the...
Full indications, dosage and side effects ↓The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.
Paying less for Deltamethrin
-
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.
-
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.
Done — we'll email you when prices land.
Prescription required
Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.
Clinical information
Deltanil 10 mg/ml Pour-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 and
Haematopinus eurysternus. Also as an aid in the treatment and prevention of
infestations by both biting and nuisance flies including
calcitrans, Musca species and Hydrotaea irritans.
On sheep: For the treatment and prevention of infestations by ticks
and by lice (Linognathus ovillus, Bovicola ovis), keds (Melophagus ovinus)
For the treatment of established blowfly strike (usually Lucilia spp).
On lambs: For the treatment and prevention of infestations by ticks and
by lice .
AN: 04345/2024Page 2 of 11
lice, including and
Haematopinus eurysternus. Also as an aid in the treatment and prevention of
infestations by both biting and nuisance flies including
calcitrans, Musca species and Hydrotaea irritans.
On sheep: For the treatment and prevention of infestations by ticks
and by lice (Linognathus ovillus, Bovicola ovis), keds (Melophagus ovinus)
For the treatment of established blowfly strike (usually Lucilia spp).
On lambs: For the treatment and prevention of infestations by ticks and
by lice .
AN: 04345/2024Page 2 of 11
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:
The veterinary medicinal product should be applied using an appropriate device :
- for the 0.5 litre and 1 litre bottles, the veterinary medicinal product is supplied
with a dosing cup
- for the 2.5 litre bottle and the 2.5 litre and 4.5 litre flexible pouches, it is
recommended to use an appropriate dosing gun. The flexible pouches should
be carried in an appropriate rucksack.
An appropriate applicator should comply with the following specifications :
-
-
and 14 mm.
AN: 04345/2024Page 5 of 11
AN: 04345/2024Page 6 of 11
AN: 04345/2024Page 7 of 11
[in relevant cases, an additional step (under 5) should be included for the removal of
the additional unviolability seal:]
AN: 04345/2024Page 8 of 11
Cattle : Apply a 10 ml dose using an appropriate applicator.
Sheep : Apply one 5 ml dose using an appropriate applicator.
Lambs : Apply one 2.5 ml dose using an appropriate applicator.
Application site :
Apply the veterinary medicinal product along the mid-line of the back at the level of
the shoulders.
See following specific indication directions.
Lice on cattle: One application will generally eradicate all lice. Complete clearance 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: Where horn-flies predominate, treatment and prevention of
infestations can be expected for 4 - 8 weeks.
Ticks on sheep: Application to the mid-point of the shoulders will provide 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: Application to the mid-point of the shoulders of sheep in
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),
- 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 veterinary medicinal product 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: Application to the mid-line of the back at the level of the
shoulders will provide 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.
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:
The veterinary medicinal product should be applied using an appropriate device :
- for the 0.5 litre and 1 litre bottles, the veterinary medicinal product is supplied
with a dosing cup
- for the 2.5 litre bottle and the 2.5 litre and 4.5 litre flexible pouches, it is
recommended to use an appropriate dosing gun. The flexible pouches should
be carried in an appropriate rucksack.
An appropriate applicator should comply with the following specifications :
-
-
and 14 mm.
AN: 04345/2024Page 5 of 11
AN: 04345/2024Page 6 of 11
AN: 04345/2024Page 7 of 11
[in relevant cases, an additional step (under 5) should be included for the removal of
the additional unviolability seal:]
AN: 04345/2024Page 8 of 11
Cattle : Apply a 10 ml dose using an appropriate applicator.
Sheep : Apply one 5 ml dose using an appropriate applicator.
Lambs : Apply one 2.5 ml dose using an appropriate applicator.
Application site :
Apply the veterinary medicinal product along the mid-line of the back at the level of
the shoulders.
See following specific indication directions.
Lice on cattle: One application will generally eradicate all lice. Complete clearance 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: Where horn-flies predominate, treatment and prevention of
infestations can be expected for 4 - 8 weeks.
Ticks on sheep: Application to the mid-point of the shoulders will provide 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: Application to the mid-point of the shoulders of sheep in
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),
- 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 veterinary medicinal product 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: Application to the mid-line of the back at the level of the
shoulders will provide 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.
Do not use in animals with extensive lesions of the skin.
Extra-label use of the veterinary medicinal 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 in cases of hypersensitivity to the active substance or to any of the
excipients.
Do not use in animals with extensive lesions of the skin.
Extra-label use of the veterinary medicinal 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.
Cattle:
Very rare
(< 1 animal/10,000 animals treated,
including isolated reports):
Application site reactions
(e.g. application
site squamosis, application site pruritus)
Observed during the 48 hours after treatment.
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 its local representative or the national
AN: 04345/2024Page 4 of 11
competent authority via the national reporting system. See the package leaflet for
respective contact details.
Very rare
(< 1 animal/10,000 animals treated,
including isolated reports):
Application site reactions
(e.g. application
site squamosis, application site pruritus)
Observed during the 48 hours after treatment.
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 its local representative or the national
AN: 04345/2024Page 4 of 11
competent authority via the national reporting system. See the package leaflet for
respective contact details.
To avoid resistance, the veterinary medicinal product should only be used if the
susceptibility of the local fly population to the active substance is assured. If clinical
signs do not resolve following treatment, the diagnosis should be revised.
Cases of resistance to deltamethrin have been reported in stinging and nuisance flies
in cattle and lice in sheep.
In countries with recognized resistance to deltamethrin the use of the veterinary
medicinal product should ideally be based on results of susceptibility testing. Please,
ask your veterinarian for further information.
The veterinary medicinal 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
veterinary medicinal 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 veterinary medicinal product, or lack of calibration of
the dosing device.
Special precautions for safe use in the target species:
Do not apply on or near the animal’s eyes and mucous membranes.
The veterinary medicinal product is for external use only.
Avoid contact with eyes and mucous membranes as Deltamethrin is an irritant.
Care should be taken to prevent licking of the veterinary medicinal product. Avoid use
of the veterinary medicinal product during extremely hot weather and ensure animals
have adequate access to water.
The veterinary medicinal 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.
AN: 04345/2024Page 3 of 11
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
People with known hypersensitivity to deltamethrin or to any of the excipients should
avoid contact with the veterinary medicinal product.
Personal protective equipment consisting of protective clothing including waterproof
apron and boots and impervious gloves should be worn when either applying the
product or handling recently treated animals.
Remove heavily contaminated clothing immediately and wash before re-use.
Wash splashes from skin immediately with soap and plenty of water.
Wash hands and exposed skin after handling this veterinary medicinal product and
before meals.
In case of contact with eyes, rinse immediately with plenty of clean, running water
and seek medical advice.
In case of accidental ingestion, wash out mouth immediately with plenty of water,
seek medical advice immediately and show the package leaflet or the label to the
physician.
Do not smoke, drink or eat while handling the veterinary medicinal product.
This veterinary medicinal product contains deltamethrin which may produce tingling,
itchiness and blotchy redness on exposed skin. If you feel unwell after working with
this veterinary medicinal product, seek medical advice immediately and show the
package leaflet or the label to the physician.
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 only
a single treatment per year on the same pasture.
The risk to aquatic ecosystems will be further reduced by preventing treated sheep
from entering watercourses for one hour immediately after treatment.
susceptibility of the local fly population to the active substance is assured. If clinical
signs do not resolve following treatment, the diagnosis should be revised.
Cases of resistance to deltamethrin have been reported in stinging and nuisance flies
in cattle and lice in sheep.
In countries with recognized resistance to deltamethrin the use of the veterinary
medicinal product should ideally be based on results of susceptibility testing. Please,
ask your veterinarian for further information.
The veterinary medicinal 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
veterinary medicinal 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 veterinary medicinal product, or lack of calibration of
the dosing device.
Special precautions for safe use in the target species:
Do not apply on or near the animal’s eyes and mucous membranes.
The veterinary medicinal product is for external use only.
Avoid contact with eyes and mucous membranes as Deltamethrin is an irritant.
Care should be taken to prevent licking of the veterinary medicinal product. Avoid use
of the veterinary medicinal product during extremely hot weather and ensure animals
have adequate access to water.
The veterinary medicinal 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.
AN: 04345/2024Page 3 of 11
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
People with known hypersensitivity to deltamethrin or to any of the excipients should
avoid contact with the veterinary medicinal product.
Personal protective equipment consisting of protective clothing including waterproof
apron and boots and impervious gloves should be worn when either applying the
product or handling recently treated animals.
Remove heavily contaminated clothing immediately and wash before re-use.
Wash splashes from skin immediately with soap and plenty of water.
Wash hands and exposed skin after handling this veterinary medicinal product and
before meals.
In case of contact with eyes, rinse immediately with plenty of clean, running water
and seek medical advice.
In case of accidental ingestion, wash out mouth immediately with plenty of water,
seek medical advice immediately and show the package leaflet or the label to the
physician.
Do not smoke, drink or eat while handling the veterinary medicinal product.
This veterinary medicinal product contains deltamethrin which may produce tingling,
itchiness and blotchy redness on exposed skin. If you feel unwell after working with
this veterinary medicinal product, seek medical advice immediately and show the
package leaflet or the label to the physician.
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 only
a single treatment per year on the same pasture.
The risk to aquatic ecosystems will be further reduced by preventing treated sheep
from entering watercourses for one hour immediately after treatment.
Do not use with any other insecticide or acaricide. Especially, in combination with
organo-phosphorous compounds, the toxicity of deltamethrin is enhanced.
organo-phosphorous compounds, the toxicity of deltamethrin is enhanced.
Store in tightly closed original container away from food, drink and animal feeding
stuffs.
stuffs.
Cattle:
Meat and offal: 17 days
Milk: zero hours
Sheep:
Meat and offal: 35 days
Milk: zero hours
Meat and offal: 17 days
Milk: zero hours
Sheep:
Meat and offal: 35 days
Milk: zero hours
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.
Medication costs adding up?
Pet insurance can cover prescription medications. Find the right policy for your pet.
Same active ingredient
Other Products Containing Deltamethrin
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
AMX 10 mg/ml Concentrate for Solution for Fish Treatment
POM-VPharmaq AS
concentrate
Atlantic salmon
Trout - Golden/Rainbow/Redband/Steelhead
Butox Swish, Pour-on Suspension 7.5 mg/ml
POM-VPSIntervet International B.V.
spot-on
Cattle
Canishield 0.77 g Medicated Collar for Small and Medium Sized Dogs
NFA-VPSBeaphar B.V.
collar
Dogs
Canishield 0.77 g Medicated Collar for Small and Medium Sized Dogs
AVM-GSLBeaphar B.V.
collar
Dogs
Canishield 1.04 g Medicated Collar for Large Sized Dogs
NFA-VPSBeaphar B.V.
collar
Dogs
Canishield 1.04 g Medicated Collar for Large Sized Dogs
AVM-GSLBeaphar B.V.
collar
Dogs
Alternative options to consider
Retailers we earn a commission from. It costs you nothing and never changes what we show.
The Pharm Pet Co.
Flea & Tick Treatments for Cats
Vet-strength feline flea and tick treatments. Stronghold, Advocate, Frontline and more, dispensed by UK pharmacists.
From £8.99
Shop now
Pharmacy2U
Pet Flea Treatments at Pharmacy2U
Frontline, Advantage and own-brand flea treatments at pharmacy prices. Trusted UK pharmacy since 1999.
From £7.99
Shop now
VetBox
VetBox Flea & Worm Protection for Cats
Vet-founded monthly parasite subscription. Flea, tick and worm protection delivered to your door. Founded by Dr Will Woodley, protecting 30,000+ pets.
From £9.99/month
Shop now
We may earn a small commission if you purchase through these links, at no extra cost to you.
Also in flea-tick
Related Medications
Advantage 100 mg Spot-on Solution for Medium Dogs
AVM-GSLImidacloprid
spot-on
Dogs
Advantage 100 mg Spot-on Solution for Medium Dogs
AVM-GSLImidacloprid
spot-on
Dogs
Advantage 100 Spot-on Solution for Dogs
NFA-VPSImidacloprid
spot-on
Dogs
Advantage 100 Spot-on Solution for Dogs
NFA-VPSImidacloprid
spot-on
Dogs
Advantage 250 mg Spot-on Solution for Large Dogs
AVM-GSLImidacloprid
spot-on
Dogs
Advantage 250 mg Spot-on Solution for Large Dogs
AVM-GSLImidacloprid
spot-on
Dogs
Find cheaper vets near you
Compare vet consultation prices in your area. Save on procedures and get a prescription to buy medications online.