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POM-V Prescription Required Companion Animal

Marbocyl P 20 mg Tablet for Dogs

Active ingredient: Marbofloxacin

Form

Tablet

Species

Dogs

Manufacturer

Vetoquinol UK Limited

VMD MA No.

08007/5023

What it's used for

Marbofloxacin is indicated in the treatment of:  furunculosis, cellulitis) caused by susceptible strains of organisms.  susceptible strains of organisms....

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

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Paying less for Marbofloxacin

  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

Marbocyl P 20 mg Tablet for Dogs — SPC Details

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

Marbofloxacin is indicated in the treatment of:

furunculosis, cellulitis) caused by susceptible strains of organisms.

susceptible strains of organisms.
For oral administration.
The recommended dose rate is 2 mg/kg/d ( 1 tablet for 10 kg per day) in
single daily administration. To ensure a correct dosage body weight should
be determined as accurately as possible to avoid underdosing.

Depending on the course of the disease, it may be extended up to 40 days.

Depending on the course of the disease, it may be extended up to 28 days.

depending on the course of the disease, it may be extended up to 21 days.
Marbofloxacin should not be used in dogs aged less than 12 months, or
less than 18 months for exceptionally large breeds of dogs, such as Great
Danes, Briard, Bernese Bonvier and Mastiffs, with a longer growth period.
Do not use in cases of hypersensitivity to fluoroquinolones or any of the
excipients of the product.

Revised: July 2025
MA Split from NI MA Following AN:01098/2025
Do not use in cases of resistance against quinolones since (almost)
complete cross-resistance exists against other fluoroquinolones.
Not suitable for infections resulting from strict anaerobes, yeast or fungi.
Do not use in cats. For the treatment of this species, a 5 mg tablet is
available.
At the therapeutic recommended dosage, no severe side-effects are to be
expected in dogs and cats.

In particular, no lesions of the articular joints
were encountered in clinical studies at the recommended dose rate.
However, joint pain and/or neurological symptoms (ataxia, aggression,

Revised: July 2025
MA Split from NI MA Following AN:01098/2025
convulsion, depression) may occur on rare occasions.
Allergic reactions have been observed (temporary skin reactions) due to
histamine release that may occur.
Mild side effects such as vomiting, softening of faeces, modification of thirst
or transient increase in activity may occasionally occur. These signs cease
spontaneously after treatment and do not necessitate cessation of
treatment.
The frequency of adverse reactions is defined using the following
convention:
- rare (more than 1 but less than 10 animals in 10,000 animals treated)
Nil

(i) Special precautions for use in animals
The fluoroquinolones have been shown to induce erosion of articular
cartilage in juvenile dogs and care should be taken to dose accurately
especially in young animals.
The fluoroquinolones are also known for their potential neurological side
effects. Cautious use is recommended in dogs and cats diagnosed as
suffering from epilepsy.
A low urinary pH could have an inhibitory effect on the activity of
marbofloxacin.
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, use of fluoroquinolones
should be based on susceptibility testing. Use of the product deviating from
the instructions given in the SPC may increase the prevalence of bacteria
resistant to the fluoroquinolones and may decrease the effectiveness of
treatment with other quinolones due to the potential for cross resistance.
(ii) Special precautions to be taken by the person administering the
veterinary medicinal product to animals
People with known hypersensitivity to fluoroquinolones should avoid using
this product. In case of accidental ingestion seek medical attention and
show product label and/or package leaflet to the doctor. Wear gloves when
handling or dividing tablets. Wash hands after use.
interaction
Fluoroquinolones are known to interact with orally administered cations
(Aluminium, Calcium, Magnesium, Iron). In such cases, the bioavailability
may be reduced.
No special precautions for storage
Not applicable.
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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