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POM-V Prescription Required

Florolab 100 mg/ml Solution for Use in Drinking Water for Pigs

Active ingredient: Florfenicol

Form

Solution

Species

Pigs

Manufacturer

Labiana Life Sciences SA

VMD MA No.

32112/4002

What it's used for

be established in the herd before initiating metaphylactic treatment.

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. 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

Florolab 100 mg/ml Solution for Use in Drinking Water for Pigs — SPC Details

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

be established in the herd before initiating metaphylactic treatment.
Recommended dose, 10 mg florfenicol per kg bodyweight per day in drinking water for
5 consecutive days.
Based on the recommended dose, and the number and weight of the animals to be
treated, the exact daily concentration of the veterinary medicinal product should be
calculated according to the following formula:
ml veterinary
medicinal product/
kg body weight per
day
x
average body
weight (kg) of
animals to be
treated
=
ml veterinary
medicinal product
per litre of drinking
water
average daily water intake (l/animal)
The appropriate quantity of medicated water should be prepared based on the daily
water consumption. To ensure a correct dosage, body weight should be determined
as accurately as possible. In order to avoid under- and over-dosing, treated animals
should be divided into groups of similar body weight and the dose should be calculated
for each group individually.
For Bulk Tank:
To treat pigs drinking 10% of their bodyweight, at the dose of 10 mg/kg: add the
florfenicol solution to the drinking water in the bulk tank. Use one bottle (1L) of
florfenicol solution for every 1000 L of water or use one barrel (5L) of florfenicol solution
for every 5000 L of water and mix thoroughly.
For Proportioner:
To treat 5000 kg of pigs, drinking 10% of their bodyweight, at the dose rate of 10 mg/kg:
1. Empty the content of one bottle/barrel of florfenicol solution in the proportioner
and dilute with drinking water as follows:
AN: 01353/2025 & 01357/2025
Bottle/BarrelAmount of drinking water1L100 L5L500 L
2.Mix thoroughly.
3.Set the proportioner on 10%
4.Turn on the proportioner.
Warning: Solutions with concentrations higher than 1.2 g of florfenicol per litre may
precipitate. Do not use the product with chlorinated water.
The uptake of medicated water depends on several factors including the clinical state
of the animals and local conditions such as ambient temperature and humidity. In order
to obtain the correct dosage water uptake has to be monitored and the concentration
of florfenicol has to be adjusted accordingly. If however it is not possible to obtain
sufficient uptake of medicated water animals should be treated parenterally.
Do not use in boars intended for breeding purposes. Studies in rats have revealed
evidence of potential adverse effects on the male reproductive system.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipient.
Pigs:
Very common
(>1 animal / 10 animals treated):
Diarrhoea
Localized oedema
1,2
Very rare
(<1 animal / 10 000 animals treated,
including isolated reports):
Decreased drinking, unusual stool colour
Constipation
Rectal prolapse
1.Peri-anal and rectal erythema/oedema which may affect approximately 40% of
the animals. Transient.
2.Not application site
3.Dark brown faeces.
4.Resolving without treatment.
AN: 01353/2025 & 01357/2025
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 the immediate packaging for respective contact details.
The treated pigs should be placed under special observation. On each of the five days
of treatment, unmedicated drinking water should not be given until the full daily amount
of medicated drinking water has been ingested by pigs.
If there are no signs of improvement after three days of treatment, the diagnosis should
be reviewed and, if necessary, the treatment changed.
AN: 01353/2025 & 01357/2025

Special precautions for safe use in the target species:
The veterinary medicinal product should be used in conjunction with susceptibility
testing.
Use of the product deviating from the instructions given in the SPC may increase the
prevalence of bacteria resistant to the florfenicol.
Official and local antimicrobial policies should be taken into account when the product
is used.
Treatment should not exceed 5 days
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
This product may cause irritation of the skin and eyes.
Florfenicol may cause adverse events on male reproductive systems, such as
shrinking of the testes.
Contact of the neat product, or the medicated drinking water, with skin and eyes should
be avoided.
Personal protective equipment consisting of protective gloves, coverall and safety
glasses should be worn when handling and mixing the product.
Do not smoke, eat or drink when handling the product or mixing the medicated drinking
water.
In case of accidental spillage into eyes, wash them immediately with water. In case of
contact with skin, wash the affected area immediately and remove any contaminated
clothing.
This product may cause hypersensitivity (allergic) reactions in some people.
People with known hypersensitivity to florfenicol or propylene glycol should avoid
contact with the veterinary medicinal product.
If you develop symptoms following exposure, such as skin rash, seek medical advice
immediately and show the package leaflet or the label to the physician.
Special precautions for the protection of the environment:
This product should not be allowed to enter surface waters as it has harmful effects on
aquatic organisms.
No data available.
Do not store above 25 °C.
Meat and offal: 20 days.

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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