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Injection 2% » 100ml Bottle

  • 5mg Tablets » Priced per Tablet £0.79
  • 20mg Tablets » Priced per Tablet £1.39
  • 80mg Tablets » Priced per Tablet £4.00
  • Injection 2% » 100ml Bottle £53.99
  • Injection 10% » 50ml Bottle £67.49
  • Injection 10% » 100ml Bottle £133.49

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Marbocyl P is relatively recently developed antibiotic available in doses for use on dogs, cats, pigs and cattle. It has a broad spectrum of activity and can be used in infections affecting the skin, respiratory system, urinary systems and other soft tissues. Appropriate culture and sensitivity testing of the infectious agent is advised where possible. For mild and localised infections a course lasting a few days is all that is needed, but some infections, such as those involving the deeper layers of the skin, will require a course lasting several weeks. Marbocyl tablets should be given once daily

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Medication Datasheets

80mg Tablets » Priced per Tablet

Marbocyl P 5mg, 20mg and 80mg Tablets


Beige brown spotted round tablets

Three strengths are available.

Marbocyl P 5 mg containing 5 mg marbofloxacin. For use in dogs and cats.

Marbocyl P 20 mg containing 20 mg marbofloxacin.For use in dogs.

Marbocyl P 80 mg containing 80 mg marbofloxacin. For use in dogs.


In Dogs

Marbocyl is indicated in the treatment of skin and soft tissue infections (skin fold pyoderma, impetigo, folliculitis, furunculosis, cellulitis), for the treatment of urinary tract infections associated or not with prostatitis and respiratory tract infections, caused by susceptible strains of organisms.

In Cats (Marbocyl P 5mg Tablet only)

Marbocyl is indicated for the treatment of skin and soft tissue infections (wounds, abscesses, phlegmons) and upper respiratory tract infections caused by susceptible strains of organisms.

Dosage and administration

For oral administration. The recommended dose rate is 2 mg/kg per day in a single daily administration. To ensure a correct dosage body weight should be determined as accurately as possible to avoid underdosing.

In dogs for the treatment of skin and soft tissue infections, treatment duration is at least five days. Depending on the course of the disease it may be extended up to 40 days. In urinary tract infections, treatment duration is at least 10 days. Depending on the course of the disease it may be extended up to 28 days. In respiratory infections, treatment duration is at least 7 days and, depending on the course of the disease, may be extended up to 21 days.

In cats for the treatment of skin and soft tissue infections, treatment duration is 3–5 days. For upper respiratory infections, treatment duration is 5 days.

Contra-indications, warnings, etc

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, Bouvier and Mastiffs with a longer growth period. Not recommended for use in cats aged less than 16 weeks.

Not suitable for infections resulting from strict anaerobes, yeast or fungi.

Do not use Marbocyl P 20mg or Marbocyl P 80mg tablets in cats. For the treatment of this species the Marbocyl P 5mg tablet is available.

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 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 effectiveness of treatment with other quinolones due to the potential for cross resistance.

Adverse reactions (frequency and seriousness)

At the therapeutic recommended dosage no severe side effects are to be expected in cats and dogs. In particular no lesions of the articular joints were encountered in clinical studies at the recommended dose rate.

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 the treatment.

Use during pregnancy and lactation

Studies in pregnant rats and rabbits showed no side effects on pregnancy. However, no specific studies have been carried out in pregnant cats and dogs.

Interaction with other medicinal products and other forms of interaction

Fluoroquinolones are known to interact with orally administered cations (Aluminium, Calcium, Magnesium, Iron.) In such cases, the bioavailability may be reduced.

Overdose (symptoms, emergency procedures, antidotes), if necessary

Overdosage may cause acute signs in the form of neurological disorders which should be treated symptomatically.

Withdrawal period(s)

Not applicable

Operator warning

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.

Pharmaceutical precautions

No special precautions for storage.

Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements.

Legal category

Packaging quantities

Marbocyl P tablets are packaged in aluminium/aluminium blister packs.

Marbocyl P 5mg 10 blisters of 10 tablets

Marbocyl P 20mg 10 blisters of 10 tablets

Marbocyl P 80mg 12 blisters of 6 tablets

Further information

Pharmacodynamic properties

Marbofloxacin is a synthetic bactericidal antimicrobial belonging to the fluoroquinolone group which acts by inhibition of DNA gyrase. It is effective against a wide range of Gram positive bacteria (in particular Staphylococci, Streptococci) and Gram negative bacteria (Escherichia coli, Salmonella typhimurium, Citrobacter freundii, Enterobacter cloacae, Serratia marcescens, Morganella morganii, Proteus spp, Klebsiella spp, Shigella spp, Pasteurella spp, Haemophilus spp, Moraxella spp, Pseudomonas spp, Brucella canis) as well as Mycoplasma spp.

Marbofloxacin is not effective against anaerobes, yeasts or fungi.

Resistance to fluoroquinolones occurs by chromosomal mutation with three mechanisms: decrease of the bacterial wall permeability, expression of the efflux pump or mutation of the enzymes responsible for molecule binding. No significant evolution of resistance to marbofloxacin has been observed in the target pathogenic strains isolated from companion animals since the launch of the molecule on the veterinary market. The occurrence and rate of transfer of a genetic resistance is therefore considered to be very low.

Cross-resistance with ß-lactam antibiotics, aminoglycosides, tetracyclines, macrolide and polypeptide antibiotics, sulfonamides, diaminopyrimidines, and nitrofurans does not generally occur. However, certain mutations conferring resistance to fluoroquinolones can also confer resistance to cephalosporins, tetracyclines, macrolides and chloramphenicol.

Pharmacokinetic properties

After oral administration in dogs and cats at the recommended dose of 2 mg/kg, Marbofloxacin is readily absorbed and reaches maximal plasma concentrations of 1.5 µg/ml within 2 hours. Its bioavailability is close to 100%. It is weakly bound to plasma proteins (<10%), extensively distributed and in most tissues (liver, kidney, skin, lung, bladder, digestive tract) it achieves higher concentrations than in plasma. Marbofloxacin is eliminated slowly (t1/2β= 14h in dogs and 10h in cats) predominately in the active form, in urine (2/3) and faeces (1/3).

Marketing Authorisation Number

Marbocyl P 5 mg Vm08007/4109

Marbocyl P 20 mg Vm08007/4110

Marbocyl P 80 mg Vm08007/4111

Delivery Information

How quickly do you deliver?

Under almost all products on our website is an Estimated dispatch time, check this for a delivery prediction specific to the item you are looking to purchase. These badges are updated live based on the stock levels we have and also those of our suppliers - so are usually very accurate, but cannot be guaranteed. In more general terms, we aim to dispatch all orders within 1 working day of receiving payment (and a prescription if required). If we cannot do so within 3 working days we will contact you by email.

What do you charge for delivery?

For UK delivery, we charge the following:

Order Total Weight Delivery
£0-£28.99 Under 2kg £2.99
2kg+ £4.99
£29-£38.99 Under 2kg Free
2kg+ £4.99
£39+ Under 2kg Free
2kg+ Free

Prices quoted are for delivery to all parts of mainland UK except certain Scottish postcodes (where the price is higher for items sent by courier. Delivery of food abroad (including Channel Islands, N. Ireland and other islands around the UK) is charged at a higher price and free delivery is not available. Temperature controlled products, such as Insulin, are also not always subject to the standard and/or free delivery options.

For full information on our delivery charges, including prices on heavy deliveries to Scotland and abroad, see our delivery information page.

We can deliver most items to all around the world, but prices do vary. The majority of light weight orders (less than 1.5kg) can be delivered for a flat rate of £10. For an accurate estimate of the delivery charge, please put the items you require in your basket and use the "Estimate Delivery" system on the shopping basket page (you only need to enter your country and postal/zip code) for a quick quote. For deliveries to the USA you may need to go to the checkout page and enter your full address to get a quote (as some services need your state in order to quote too). For more information on international deliveries, please see our delivery information page.

Delivery of aerosols

Due to air freight restrictions aerosols cannot ever be sent abroad by Royal Mail. We appreciate your understanding.

Delivery of temperature controlled items

Some products, such as insulin and frozen food, need to be delivered in insulated packaging to prevent them from getting too warm (or too cold) during transit from us to you. Purchasing any of these items in your order will result in a £1.99 charge being added to the total to cover the high cost of the insulated packaging materials. You only pay the £1.99 once per order, regardless of how many temperature controlled items you purchase in that order.

How do I cancel or return an order?

Please call us as soon as possible if you need to amend or cancel an order on 01582 842096. If your order has been processed for dispatch we will be unable to cancel or amend the order. You will however be able to return your product for a full refund*.

To return an item, you must contact us by phone or email to arrange this BEFORE posting any product back to us. We will explain the process at this stage for you.

*For full details on returns, see our terms and conditions page.

Reviews (6)

Q & A

Below are some recent questions we've received regarding Marbocyl, including answers from our team.

7 September 2014 at 11:28pm



Is Marbocyl available in a liquid oral form for reptiles. Would there be an adverse reaction giving the injectable for orally to a reptile?

  • Non-Executive Director

Strictly speaking this is something only your vet can advise you on, because he/she knows the full details of the case. I can say however that the injectable solution has been used in reptiles, either for injection or given orally, and it is regarded as generally safe and effective. The "recommended" dose is 10mg/kg every 2 days, but this is an unlicensed use and only your vet can advise on the specific risk/benefit analysis.