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POM-V Prescription Required Companion Animal

Carprox vet 50 mg/ml Solution for Injection for Dogs and Cats

Active ingredient: Carprofen

Form

Injection

Species

Cats Dogs

Manufacturer

KRKA, d.d., Novo mesto

VMD MA No.

01656/4014

What it's used for

Cats: For the control of post-operative pain following surgery.

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

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

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

Cats: For the control of post-operative pain following surgery.
Dogs: The recommended dosage is 4.0 mg carprofen/kg bodyweight (1 ml/12.5 kg
bodyweight), by intravenous or subcutaneous injection. The veterinary medicinal
product t is best given pre-operatively, either at the time of premedication or induction
of anaesthesia.
Cats:
subcutaneous or intravenous injection, best given pre-operatively at the time of
induction of anaesthesia. The use of a 1 ml graduated syringe is recommended to
measure the dose accurately.
AN: 00289/2024 & 00295/2024
Clinical trial evidence in dogs and cats suggests only a single dose of carprofen is
required in the first 24 hours perioperatively; if further analgesia is required in this
period a half dose (2 mg/kg) of carprofen may be given to dogs (but not to cats) as
necessary.
To ensure a correct dosage, body weight should be determined as accurately as
possible.
In dogs, to extend analgesic and anti-inflammatory cover post-operatively, parenteral
therapy may be followed with carprofen tablets at 4 mg/kg/day for up to 5 days.
For administration of the veterinary medicinal product a 21-gauge needle should be
used.
The cap can be punctured up to 20 times. When puncturing more than 20 times, use
a draw-off needle.
Do not use in animals suffering from cardiac, hepatic or renal disease or
gastrointestinal problems, where there is a possibility of gastrointestinal ulceration or
AN: 00289/2024 & 00295/2024
bleeding, or hypersensitivity to carprofen or any other NSAIDs or any excipients of
this veterinary medicinal product. As with other NSAIDs there is a risk of rare renal or
idiosyncratic hepatic adverse events.
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.
See also section 3.7.
Dogs and cats:
Rare
(1 to 10 animals / 10,000
Renal disorder.
Hepatic disorder
.
AN: 00289/2024 & 00295/2024
animals treated):Undetermined frequency
(cannot be estimated from the
available data):
Vomiting
, loose stool
, diarrhoea
, blood in
faeces
, appetite loss
, lethargy
Injection site reaction
1
Idiosyncratic reaction.
Transient. Generally, occur within the first treatment week and are in most cases
disappear following termination of the treatment but in very rare cases may be
serious or fatal.
Following subcutaneous injection.
If adverse reactions occur, use of the veterinary medicinal product should be stopped
and the advice of a veterinarian should be sought.
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 safe use in the target species:
Do not exceed the recommended dose or duration of treatment.
Due to the longer half life in cats and narrower therapeutic index, particular care
should be taken not to exceed the recommended dose and the dose should not be
repeated.
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 any 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:
Care should be taken to avoid accidental self-injection.
Carprofen, in common with other NSAIDs, has been shown to exhibit
photosensitising potential in laboratory animals. Avoid skin contact with the veterinary
medicinal product. Should this occur, wash the affected area immediately.
Special precautions for the protection of the environment:
Not applicable.
Do not administer other NSAIDs and glucocorticoids concurrently or within 24 hours
of administration of the veterinary medicinal product. Carprofen is highly bound to
plasma proteins and may compete with other highly bound drugs, which can lead to
toxic effects.
Concurrent administration of potential nephrotoxic drugs should be avoided.
Store in a refrigerator (2 C – 8 C).
Do not freeze.
Once broached, do not store above 25
o
C.
Not applicable.

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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