POM-V Prescription Required

Selectan 300 mg/ml Solution for Injection for Cattle and Swine

Active ingredient: Florfenicol

Form

Injection

Species

Cattle Pigs

Manufacturer

Laboratorios Hipra SA

VMD MA No.

17533/5028

What it's used for

Diseases caused by florfenicol susceptible bacteria: Cattle: Therapeutic treatment of respiratory tract infections in cattle due to haemolytica, Pasteurell...

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

Selectan 300 mg/ml Solution for Injection for Cattle and Swine — SPC Details

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

Diseases caused by florfenicol susceptible bacteria:
Cattle:
Therapeutic treatment of respiratory tract infections in cattle due to
haemolytica, Pasteurella
Swine:
Treatment of acute outbreaks of respiratory disease caused by strains of
Actinobacillus pleuropneumoniae and.

Cattle:
20 mg/kg bodyweight (1 ml of the product per 15 kg) by intramuscular route to be
administered twice 48 hours apart.
For treatment of cattle over 150 kg body weight, divide the dose so that no more than
10 ml are injected at one site.
Swine:
15 mg/kg bodyweight (1 ml of the product per 20 kg) by intramuscular injection into the
neck muscle twice at 48 hours intervals.
For treatment of swine over 60 kg body weight, divide the dose so that no more than 3
ml are injected at one site.
To ensure a correct dosage, body weight should be determined as accurately as
possible to avoid underdosing.

Do not administer to adult bulls or boars intended for breeding purposes.
Do not administer to animals with known hypersensitivity to the active substance or to
any of the excipients.

Cattle
A decrease in food consumption and transient softening of the faeces may occur
during the treatment period. The treated animals recover quickly and completely upon
termination of treatment.
Administration of the veterinary medicinal product may cause inflammatory lesions at
injection site which persist for up to 14 days.
Swine
Commonly observed adverse effects are transient diarrhoea and/or peri-anal and
rectal erythema/oedema which may affect 50% of the animals. These effects can be
observed for one week.
Transient swelling lasting up to 5 days may be observed at the site of injection.
Inflammatory lesions at the injection site may be seen for up to 28 days.

Revised: October 2025
MA split from NI MA following AN: 00113/2025

None.

Revised: October 2025
MA split from NI MA following AN: 00113/2025

Special precautions for use in animals
Do not use in piglets of less than 2 kg.
Swab the septum before removing each dose.
Use a dry, sterile syringe and needle.
Use of the veterinary medicinal product should be based on susceptibility testing and
take into account official and local antimicrobial policies.
Use of the product deviating from the instructions given in the SPC may increase the
prevalence of bacteria resistant to the florfenicol and may decrease the effectiveness
of treatment with other amfenicols, due to the potential for crossresistance.
Special precaution to be taken by the person administering the medicinal
product to animals
Care should be taken to avoid accidental self-injection.
Avoid contact with eyes and skin.
If eye exposure occurs, flush eyes immediately with clean water.
If skin exposure occurs, wash the affected area with clean water.
Wash hands after use.
People with known hypersensitivity to florfenicol 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.
Other precautions
The use of this veterinary medicinal product may pose a risk for terrestrial plants,
cyanobacteria and groundwater organisms.

None known.

Keep container in outer carton.

Cattle:
Meat and offal: 30 days.
Not permitted for use in lactating animals producing milk for human consumption.
Swine:
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.