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POM-V Prescription Required Companion Animal

Cartaxx 50 mg/ml Solution for Injection for Dogs and Cats

Active ingredient: Carprofen

Form

Injection

Species

Cats Dogs

Manufacturer

Alfasan Nederland B.V.

VMD MA No.

36408/5028

What it's used for

Dog: for the control of post-operative pain and inflammation following orthopaedic and soft tissue (including intra-ocular) surgery. Cat: for the control o...

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 Carprofen

  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

Cartaxx 50 mg/ml Solution for Injection for Dogs and Cats — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 18 Mar 2026.

Dog: for the control of post-operative pain and inflammation following
orthopaedic and soft tissue (including intra-ocular) surgery.
Cat: for the control of post-operative pain following surgery.
Do not use in animals suffering from cardiac, hepatic or renal disease or
gastrointestinal problems, where there is a possibility of gastrointestinal
ulceration or bleeding.
Do not use in cases of hypersensitivity to the active substance or any other
non-steroidal anti-inflammatory drugs (NSAIDs) or any excipients of this
veterinary medicinal product.
Do not administer by intramuscular injection.
Do not use after surgery which was associated with considerable blood loss.
Do not use in cats on repeated occasions.
Do not use in cats less than 5 months of age.
Do not use in dogs less than 10 weeks of age.
Do not use during pregnancy and lactation, see also section 4.7.

Issued: May 2024
AN: 02680/2022
Dogs and cats:
Rare
(1 to 10 animals / 10,000
animals treated):
Digestive tract disorder: loss of appetite,
vomiting, gastric-intestinal ulceration, loose
stool, blood in faeces (occult), diarrhoea
1,2
Renal disorder.
Hepatic disorder (idiosyncratic).
Injection site reactions
Undetermined frequency
(cannot be estimated
from the available data)
Lethargy.
1,2
Anaemia.
in most cases transient and disappear following termination of the treatment
but in very rare cases may be serious or fatal.

Issued: May 2024
AN: 02680/2022
If adverse reactions occur, use of the veterinary medicinal product should be
stopped and the advice of a veterinarian should be sought.
following subcutaneous 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.
None.

Special precautions for use in animals
Do not exceed the recommended dose or duration of treatment.
Use in aged dogs and cats, may involve additional risk. If such use cannot be
avoided, such animals may require a reduced dosage and careful clinical
management.
Avoid use in dehydrated, hypovolaemic or hypotensive animal, as there is a
potential risk of increased renal toxicity.
NSAIDs can cause inhibition of phagocytosis and hence in the treatment of
inflammatory conditions associated with bacterial infection, appropriate
concurrent antimicrobial therapy should be instigated.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals
Carprofen, in common with other NSAIDs, has been shown to exhibit
photosensitising potential in laboratory studies. Benzyl alcohol may cause
hypersensitivity (allergic) reactions. People with known (hyper)sensitivity to
carprofen, NSAIDs or benzyl alcohol should administer the veterinary medicinal
product with caution. Avoid contact with skin. Wash off any splashes
immediately with clean, running water. Seek medical attention if irritation
persists.
Take care to avoid self-injection. In case of accidental self-injection, seek
medical advice and show the package leaflet or the label to the physician.
Special precautions for the protection of the environment:
Not applicable.
Other precautions
Not applicable.
Carprofen should not be administered concurrently, or within 24 hours of
another NSAID, or in conjunction with glucocorticosteroids. Carprofen is highly
bound to plasma proteins and may compete with other highly bound drugs
which can lead to toxic effects. Hence, concurrent administration with
potentially nephrotoxic drugs should be avoided.
Keep the vial in the outer carton in order to protect from light.
This veterinary medicinal product does not require any special temperature
storage conditions.
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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