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POM-VPS Prescription Required

Deltamole 7.5 mg/ml Pour-on Suspension for Cattle

Active ingredient: Deltamethrin

Form

Spot-on

Species

Cattle

Manufacturer

Intervet International B.V.

VMD MA No.

06376/4101

What it's used for

Control of biting and sucking lice of cattle, including Damalinia bovis, Haematpoinus eurysternusLinognathus vituli.

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

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. 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. 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.

Prescription required

Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.

Clinical information

Deltamole 7.5 mg/ml Pour-on Suspension for Cattle — SPC Details

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

Control of biting and sucking lice of cattle, including Damalinia bovis, Haematpoinus
eurysternusLinognathus vituli.
For external use only.
Pour the veterinary medicinal product along the backline of the animals, from the
head to the tail, at the following recommended dose rates:
IndicationsDose rateFlies
Control of biting and nuisance
flies
up to 100 kg: 10 ml
100 – 300 kg: 20 ml
over 300 kg: 30 ml
Lice:
Control of biting and sucking lice10 ml per animal irrespective of
bodyweight.
Flies: a single application provides protection against flies for 8 to 10 weeks
depending on the infestation degree, fly species and weather conditions. Treatment
should be repeated within 8 - 10 weeks depending on the weather and the fly
species.
Lice: a single application provides protection against lice for 8 to 10 weeks. All in
contact animals must be treated at the same time. A single application is sufficient
against lice.
To ensure a correct dosage, body weight should be determined as accurately as
possible.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
Do not use on animals with major skin lesions.
Cattle:
Very rare
(<1 animal / 10,000 animals
treated, including isolated reports):
Application site erythema,
Application site pruritus;
Hyperactivity, Anxiety;
Hypersensitivity reaction.
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
competent authority via the national reporting system. See the package leaflet for
respective contact details.
Cases of resistance to deltamethrin have been reported in stinging and nuisance
flies in cattle. 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. Therefore,
the use of this veterinary medicinal product should be based on local (regional and
farm) 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:
-
over an extended period of time;
-
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:
Do not apply on or near the animal’s eyes and mucous membranes.
Care should be taken to prevent the animal licking 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 already be affected by infestation.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
People with known hypersensitivity to deltamethrin should avoid contact with the
veterinary medicinal product.
Personal protective equipment consisting of waterproof apron and boots and
impervious gloves should be worn when either applying or handling the veterinary
medicinal product or 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 and
seek medical advice.
Do not eat, drink or smoke while handling the veterinary medicinal product.
This veterinary medicinal product contains deltamethrin, which may produce tingling,
itching and blotchy redness on exposed skin. Irritation, sensitisation and adverse
effects on the neuronal system might occur. 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.
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 and aquatic organisms.
The risk to dung fauna can be reduced by avoiding too frequent and repeated use of
deltamethrin (and other synthetic pyrethroids) in cattle, e.g., by using only a single
treatment per season on the same pasture.
Some organo-phosphorous insecticides can reduce metabolism rate and thus
enhance deltamethrin toxicity. Therefore, avoid the use of such organo-phosphorous
insecticides (consult the supplier).
Protect from direct sunlight. Keep away from food, drink and animal feeding stuffs.
Meat and offal: 20 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.

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