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POM-VPS Prescription Required

Noromectin 0.5% w/v Pour-on Solution

Active ingredient: Ivermectin

Form

Spot-on

Species

Cattle

Manufacturer

Norbrook Laboratories Limited

VMD MA No.

02000/4172

What it's used for

Indicated for the effective treatment and control of the following gastrointestinal roundworms, lungworms, eyeworms, warbles, chorioptic and sarcoptic mang...

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

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Paying less for Ivermectin

  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

Noromectin 0.5% w/v Pour-on Solution — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 26 Mar 2026.

Indicated for the effective treatment and control of the following gastrointestinal
roundworms, lungworms, eyeworms, warbles, chorioptic and sarcoptic mange and
sucking and biting lice in beef and non-lactating dairy cattle.
Gastrointestinal roundworms (adults and fourth stage larvae):
Ostertagia ostertagi
Trichostrongylus axei, Trichostrongylus colubriformis, Cooperia
Oesophagostomum radiatum, Strongyloides papillosus (adult), Trichuris spp (adult).
Lungworms (adult and fourth stage larvae):
Dictyocaulus viviparus.
Eyeworms (adult):
Thelazia spp
Warbles (parasitic stages):
Hypoderma bovis, Hypoderma lineatum.

Revised: March 2023
AN: 02204/2022
Lice:
Linognathus vituli, Haematopinus eurysternus, Solenopotes capillatus, Damalinia
bovis
Mange mites:
Chorioptes bovis, Sarcoptes scabiei var bovis.
Rainfall before or after treatment will not affect the efficacy of Noromectin 0.5% w/v
Pour-On Solution.
Ivermectin should be administered topically at 500 per kg bodyweight (1 ml per 10
kg bodyweight).
The formulation should be applied along the midline of the back in a narrow strip
between the withers and the tailhead.

Revised: March 2023
AN: 02204/2022
To ensure administration of a correct dose, body weight should be determined as
accurately as possible; accuracy of the dosing device should be checked.
250 ml bottle and 1 litre pack
(Squeeze dispensing bottle/twin-neck container/single neck container)
•
dispensing cup to the product bottle (squeeze-measure container) and hold the
container in an upright position.
•
volume increment.
•
1 litre, 2.5 litre and 5 litre pack
(Collapsible Back Pack)
•
vent cap provided.
•
cap.
•
adjusting the dose, and care of the applicator gun following use.
Do not apply to areas of skin which have mange, scabs or other lesions or to areas
contaminated with mud or manure.
Formulated for specific use in cattle. It should not be applied or administered to other
species, as severe reactions, including fatalities in dogs, may occur.
Undesirable effects are not expected when the product is used at the recommended
dose rate.
Assess bodyweight as accurately as possible before calculating the dosage.

For external use only.
Cases of intolerance with fatal outcome are reported in dogs, especially Collies, old
English Sheepdogs and related breeds or crosses, and also in turtles/tortoises.” Do
not allow these species to come in contact with this product.
Close container after use.
Special precautions for use in animals
Care should be taken to avoid the following practices because they increase the risk
of development of resistance and could ultimately result in effective therapy:
•
extended period of time.
•
misadministration of the product, or lack of calibration of the dosing device (if
any).
Suspected clinical cases of resistance to anthelmintics should be further investigated
using appropriate tests (e.g. Faecal Egg Count Reduction Test). Where the results of
the test(s) strongly suggest resistance to a particular anthelmintic, an anthelmintic
belonging to another pharmacological class and having a different mode of action
should be used.
Resistance to ivermectin (an avermectin) has been reported in
in cattle within the EU, in
Zealand and
should be based on local (regional, farm) epidemiological information about

Revised: March 2023
AN: 02204/2022
susceptibility of nematodes and recommendations on how to limit further selection for
resistance to anthelmintics.
As Ivermectin is extremely dangerous to fish and aquatic life, treated animals should
not have direct access to surface water and ditches during treatment.
To avoid secondary reactions due to the death of Hypoderma larvae in the
oesophagus or in the spine, it is recommended to administer the product at the end
of warble fly activity and before the larvae reach their resting sites.
It is recommended to treat all animals within a herd or group.
The shedding of nematode eggs can continue for some time after treatment.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
Highly flammable – keep away from heat, sparks, open flame or other sources of
ignition.
Noromectin 0.5% w/v Pour-On Solution may be irritating to human skin and eyes and
the user should be careful not to apply it to himself or other persons. Operators
should wear nitrile rubber gloves and boots with a waterproof coat when applying the
product. Protective clothing should be washed after use. If accidental skin contact
occurs, wash the affected area immediately with soap and water. If accidental eye
exposure occurs, flush the eyes immediately with water and get medical attention.
Do not eat, drink or smoke while handling the product. Wash hands after use. Use
only in well ventilated areas or outdoors.
Do not combine ivermectin treatment with vaccination against lungworms. If
vaccinated animals are to be treated, treatment should not be carried out within a
period of 28 days before or after vaccination.
Do not store above 30°C.
Protect from light.
Store in tightly closed original container.
The container should be stored upright in their original boxes when not in use.
If stored at temperatures below 0ºC. Noromectin 0.5% w/v Pour-On Solution may
appear cloudy. Allowing it to warm at room temperature will restore the normal
appearance without affecting efficacy.
Following withdrawal of the first dose, use the product within 1 year.
Cattle
Meat: 28 days
Not to be used in animals producing milk for human consumption.
Do not use in non-lactating dairy cows including pregnant heifers within 60 days of
calving.
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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