POM-V Prescription Required

Florinject 300 mg/ml Solution for Injection for Cattle and Pigs

Active ingredient: Florfenicol

Form

Injection

Species

Cattle Pigs

Manufacturer

Laboratorios Calier, SA

VMD MA No.

20634/5005

What it's used for

Cattle: Treatment and metaphylaxis of respiratory tract infections in cattle due to Mannheimia haemolytica, Pasteurella multocida and Histophilus somni sus...

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 Florfenicol

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

Florinject 300 mg/ml Solution for Injection for Cattle and Pigs — SPC Details

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

Cattle:
Treatment and metaphylaxis of respiratory tract infections in cattle due to
Mannheimia haemolytica, Pasteurella multocida and Histophilus somni
susceptible to florfenicol.
The presence of the disease in the herd should be established before
metaphylaxis.
Pigs:
Treatment of acute outbreaks of respiratory disease caused by strains of
Actinobacillus pleuropneumoniae Pasteurella multocida
florfenicol.

Do not use in adult bulls and boars intended for breeding purposes.

Revised: March 2024
AN: 00834/2023 & 00954/2023Page 2 of 8
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.

Cattle:
Very rare
(<1 animal / 10,000 animals treated, including isolated
reports):
Anaphylactic-type
reaction
Undetermined frequency:Reduced food intake
Pasty stool
1,3
Injection site
inflammation
1
may occur during the treatment period. The treated animals recover quickly
and completely upon termination of treatment.
persists for 14 days.
transient.
Pigs:
Very common
(>1 animal / 10 animals treated):
Diarrhoea
Erythema/oedema
5,6
Pyrexia
Depression
Dyspnoea
Undetermined frequency:Injection site swelling
4,8
Injection site
inflammation
4
transient.
peri-anal and rectal.
can be observed for one week.
pyrexia is associated with either moderate
depression or moderate dyspnoea. Observed a week or more after
administration of the second dose.
lasting up to 5 days.
may be seen up to 28 days.
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 administer to piglets of less than 2 kg.
Use of veterinary medicinal product should be based on susceptibility testing of
the bacteria isolated from the animal. If this is not possible, therapy should be
based on local (regional, farm level) epidemiological information about
susceptibility of the target bacteria.
Official national and regional antimicrobial policies should be taken into account
when the veterinary medicinal product is used.
Use of the veterinary medicinal product deviating from the instructions given in
the SPC may increase the prevalence of bacteria resistant to florfenicol and
may decrease the effectiveness of treatment with other antimicrobials due to the
potential for cross-resistance.
An antibiotic with a lower risk of antimicrobial resistance selection (lower AMEG
category) should be used for first line treatment where susceptibility testing
suggests the likely efficacy of this approach.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals
This veterinary medicinal product may cause hypersensitivity (allergy).
People with known hypersensitivity to florfenicol or propylene glycol should
avoid contact with the veterinary medicinal product.
Laboratory studies in rabbits and rats with the excipient N-methyl pyrrolidone
have shown evidence of foetotoxic effects. Women of childbearing age,
pregnant women or women suspected of being pregnant should use the
veterinary medicinal product with serious caution to avoid accidental self-
injection.
Care should be taken to avoid accidental self-injection.
self-injection, seek medical advice immediately and show the package leaflet or
the label to the physician.
Avoid skin or eye contact with the veterinary medicinal product. In case of
contact with the skin or eyes, rinse the affected area immediately with plenty of
water. Wash hands after use.
Special precautions for the protection of the environment:
The use of this veterinary medicinal product may pose a risk for terrestrial
plants, cyanobacteria and groundwater organisms.

Revised: March 2024
AN: 00834/2023 & 00954/2023Page 3 of 8

interaction
None known.

Keep the vial in the outer carton in order to protect from light.

Cattle:
Meat and offal: by IM (at 20 mg/kg bodyweight, twice): 30 days.
by SC (at 40 mg/kg bodyweight, once): 44 days.
Milk: Not authorised for use in animals producing milk for human consumption,
including during the dry period
Pigs:
Meat and offal: 18 days.
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.