POM-V Prescription Required

Cronyxin 50 mg/g Oral Paste for Horses

Active ingredient: Flunixin

Form

Paste

Species

Horses

Manufacturer

Bimeda Animal Health Limited

VMD MA No.

50146/3003

What it's used for

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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 Flunixin

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

Cronyxin 50 mg/g Oral Paste for Horses — SPC Details

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

AN: 00849/2023Page 2 of 8

clinical response.
Each syringe delivers 1650 mg of flunixin, sufficient to treat 1500 kg bodyweight
corresponding to a three days treatment for a 500 kg horse. The syringe is calibrated
in 100 kg increments to facilitate dosing of horses of different weights.
Make sure the horse's mouth contains no feed. Insert the syringe into the horse's
mouth at the interdental space. Advance the plunger as far as it will go, depositing
the medication on the base of the tongue.

Do not exceed the stated dose or duration of treatment.
Do not administer other NSAIDs or glucocorticosteroids concurrently or within
24 hours of each other.
Do not use in animals suffering from cardiac, hepatic or renal disease.
Do not use in animals suspected of having gastrointestinal ulceration or bleeding.
Do not use in case of hypersensitivity to the active substance or to any of the
excipients.
Do not use in dehydrated or hypovolaemic animals, except in the case of
endotoxaemia or septic shock, as there is a potential risk of increased renal toxicity.
Do not use in animals suffering from chronic musculoskeletal disorders.
See also section 3.7.

Horses:
Very rare
(<1 animal / 10,000 animals treated, including isolated
reports):
Allergic skin reaction
Anaphylaxis
Undetermined frequencyRenal disorder*
Digestive tract
disorder*
*As for all non-steroidal anti-inflammatory drugs, flunixin may damage the
gastrointestinal mucosa and may cause renal damage particularly in hypovolemic
and hypotensive conditions, e.g. during surgery.
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 the national competent authority via the
national reporting system. See also section 16 of the package leaflet for respective
contact details.

Use of the veterinary medicinal product may lead to temporary relief due to its
ameliorating effects on inflammatory signs. This may appear as effective treatment of
the underlying disease.
The cause of the underlying inflammatory condition should be determined and
treated with appropriate concomitant therapy.

Special precautions for safe use in the target species
Animals should be rested and a sufficient supply of drinking water has to be ensured
during the course of treatment with the veterinary medicinal product.
Use in any animal less than 6 weeks of age or in aged animals may involve
additional risk.
Flunixin is toxic to avian scavengers. Do not administer to animals susceptible to
enter wild fauna food chain. In case of death or sacrifice of treated animals, ensure
that they are not made available to wild fauna.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
This product may cause serious adverse effects when ingested, particularly by
children. Keep the product stored in a closed cabinet.
This product may cause hypersensitivity (allergic) reactions. Avoid skin contact with
this product. Wear gloves during application. If you have known hypersensitivity
reactions to non-steroidal anti-inflammatory drugs (NSAIDs), do not handle the
product. In case of accidental contact with the skin wash exposed area immediately
with plenty of water and soap. Hypersensitivity reactions may be serious. If you
develop symptoms following exposure such as a skin rash, you should seek medical
advice and show the physician this warning. Swelling of the face, lips or eyes or
difficulty with breathing, are more serious symptoms and require urgent medical
attention.
This product can cause eye-irritation. Avoid contact with the eyes. If the product
comes into contact with the eyes, rinse immediately with plenty of water and seek
medical advice.
Special precautions for the protection of the environment:
Not applicable.

Concurrent administration of potentially nephrotoxic drugs, particularly
aminoglycosides, should be avoided. Some NSAIDs may be highly bound to plasma
proteins and may compete with other highly bound drugs to produce an increase in
non-bound pharmacologically active concentrations which can lead to toxic effects.
Prior or concurrent administration of steroidal or other non-steroidal anti-inflammatory
drugs is not recommended since they may enhance adverse reactions.
Do not use concurrently with the inhalation anesthetic methoxyfluran because of the
potential risk of nephrotoxicity.
Flunixin may reduce the effect of some anti-hypertensive medicinal products, such as
diuretics, angiotensin conversion enzyme (ACE) inhibitors, and beta blockers, by
inhibition of prostaglandin synthesis.

This veterinary medicinal product does not require any special storage conditions.

Meat and offal: 15 days.
Milk: Not authorised for use in animals producing milk for human consumption.
4.

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.