Noroseal 2.6g Intramammary Suspension for Cattle
Active ingredient: Bismuth Subnitrate
Form
Intramammary
Species
Manufacturer
Norbrook Laboratories Limited
VMD MA No.
02000/5023
What it's used for
In cows considered likely to be free of sub-clinical mastitis, the veterinary product may be suitable for use on its own in dry cow management for mastitis...
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Paying less for Bismuth Subnitrate
-
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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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.
Noroseal 2.6g Intramammary Suspension for Cattle — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
may be suitable for use on its own in dry cow management for mastitis control.
Selection of cows for treatment with the veterinary medicinal product should be
based on veterinary clinical judgement. Selection criteria may be based on the
mastitis and cell count history of individual cows, or recognised tests for the detection
of sub-clinical mastitis such as bacteriological sampling.
quarter immediately after the last milking of the lactation (at drying off). Do not
massage the teat or udder after infusion of the product.
Care must be taken not to introduce pathogens into the teat in order to reduce the
risk of post-infusion mastitis (aseptic technique).
It is essential that the teat is thoroughly cleaned and disinfected, with surgical spirit or
alcohol-impregnated wipes. The teats should be wiped until the wipes are no longer
visibly dirty. Teats should be allowed to dry prior to infusion. Infuse aseptically and
avoid contamination of the syringe nozzle. Following infusion it is advisable to use an
appropriate teat dip or spray.
Under cold conditions the veterinary medicinal product may be warmed to room
temperature in a warm environment to aid syringeability.
Do not use in lactating cows. Do not use the veterinary medicinal product alone in
cows with sub-clinical mastitis at drying off. Do not use in cows with clinical mastitis
at drying off.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
(<1 animal / 10,000 animals treated,
including isolated reports):
Acute mastitis
1
Primarily due to the poor infusion technique and lack of hygiene. See sections 3.5
and 3.9 regarding the importance of aseptic technique.
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.
Special precautions for safe use in the target species:
It is good practice to observe dry cows regularly for signs of clinical mastitis. If a
sealed quarter develops clinical mastitis, the affected quarter should be stripped out
manually before appropriate therapy is instituted.
To reduce the risk of contamination, do not immerse the syringe in water.
Use the syringe only once.
Since the veterinary medicinal product does not have antimicrobial activity, in order to
minimise the risk of acute mastitis due to poor infusion technique and lack of hygiene
(see section 3.6), it is crucial to follow the aseptic technique of administration
described in section 3.9.
Do not administer any other intramammary product following administration of the
veterinary medicinal product.
In cows that may have sub-clinical mastitis, the veterinary medicinal product may be
used following administration of a suitable dry cow antibiotic treatment to the infected
quarter.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
Avoid contact with skin or eyes.
Should skin or eye contact occur, wash the affected area thoroughly with water.
If irritation persists, seek medical advice immediately and show the package leaflet or
the label to the physician.
People with known hypersensitivity to bismuth salts should avoid contact with the
veterinary medicinal product.
Wash hands after use.
Special precautions for the protection of the environment:
Not applicable.
shown with a cloxacillin-containing dry cow preparation.
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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Other Products Containing Bismuth Subnitrate
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
Cepralock 2.6 g Intramammary Suspension for Dry Cows
POM-VIntervet International B.V.
Cepralock 2.6 g Intramammary Suspension for Dry Cows
POM-VIntervet International B.V.
DrySeal 2.6 g Intramammary Suspension for Cattle
POM-VElanco GmbH
DrySeal 2.6 g Intramammary Suspension for Cattle
POM-VElanco Europe Ltd
Fatroseal 2.6 g Intramammary Suspension for Dry Cows
POM-VFatro S.p.A.
Fatroseal 2.6 g Intramammary Suspension for Dry Cows
POM-VFatro S.p.A.
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