POM-V Prescription Required

Marbonor 100 mg/ml Solution for Injection for Cattle and Pig

Active ingredient: Marbofloxacin

Form

Injection

Species

Cattle Pigs

Manufacturer

Norbrook Laboratories Limited

VMD MA No.

02000/4331

What it's used for

Treatment of acute mastitis caused by marbofloxacin during the lactation period. Revised July 2025 AN: 02239/2024 & 02241/2024 Sows Treatment of Metritis M...

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 Marbofloxacin

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.

Your prescription rights → VMD register of retailers →

Prescription required

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

Clinical information

Marbonor 100 mg/ml Solution for Injection for Cattle and Pig — SPC Details

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

Treatment of acute mastitis caused by
marbofloxacin during the lactation period.

Revised July 2025
AN: 02239/2024 & 02241/2024
Sows
Treatment of Metritis Mastitis Agalactia Syndrome (postpartum dysgalactia
syndrome, PDS) caused by bacterial strains sensitive to marbofloxacin.

Pigs: intramuscular use.
To ensure a correct dosage body weight should be determined as accurately as
possible.
In cattle the subcutaneous route was shown to be better tolerated locally than the
intramuscular route. Therefore, the subcutaneous route is recommended in
heavy cattle.
The recommended dosage is 2 mg/kg (1 ml/50 kg) in a single daily injection by
intramuscular, subcutaneous or intravenous routes in cattle and by intramuscular
route in pigs. For the injections, the neck should be preferred in cattle and pigs.
Treatment durations are 3 days in pigs and 3 to 5 days in cattle.
The vial may be broached up to 35 times. The user should choose the most
appropriate vial size according to the target species to be treated.

Revised July 2025
AN: 02239/2024 & 02241/2024

Do not use in cases where the pathogen involved is resistant to other
fluoroquinolones (cross resistance).
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.

Cattle and pigs (sows):
Very rare
(<1 animal / 10,000 animals treated,
including isolated reports):
Injection site lesion
1, 2
, Injection site
reactions
(e.g. injection site pain and
injection site swelling).
Inflammatory.
Transient. May persist for at least 12 days after intramuscular injection.
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.

The efficacy data showed that the veterinary medicinal product has insufficient
efficacy for the treatment of acute forms of mastitis induced by Gram-positive
bacteria.

Special precautions for safe use in the target species:
Official and local antimicrobial policies should be taken into account when the
veterinary medicinal product is used. Fluoroquinolones should be reserved for
the treatment of clinical conditions which have responded poorly, or are expected
to respond poorly, to other classes of antimicrobials. Whenever possible,
fluoroquinolones should only be used based upon susceptibility testing. Use of
the veterinary medicinal product deviating from the instructions given in the SPC
may increase the prevalence of bacteria resistant to fluoroquinolones and may
decrease the effectiveness of treatment with other quinolones due to the
potential for cross resistance.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals
People with known hypersensitivity to (fluoro) quinolones should avoid any
contact with the veterinary medicinal product.
If the veterinary medicinal product comes into contact with skin or eyes, rinse
with copious amounts of water.
Do not drink, eat or smoke whilst using the veterinary medicinal product.
Wash hands after use.
Accidental self-injection can induce slight irritation.
In case of accidental self-injection or ingestion, seek medical advice immediately
and show package leaflet or the label to the physician.
Special precautions for the protection of the environment:
Not applicable.

Revised July 2025
AN: 02239/2024 & 02241/2024

interaction
None known.

Do not store above 25
o
C.
Protect from light.

Cattle:Meat and offal: 6 days.
Milk: 36 hours
Pigs: Meat and offal: 4 days.

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.