Florfenidem 50

Florfenicol 500 mg/g.
Premix for medicated feed for pigs, chickens and fish


Each gram of product contains:
Florfenicol (active substance): 500 mg

Target species

Pigs, chickens and fish.


Chickens: for the treatment of respiratory or digestive infections, primary and secondary caused by Pasteurella multocida, Bordetella bronchiseptica, Salmonella spp., Escherichia coli, Haemophilus spp., Staphylococus spp., Streptococus spp., Ornithobacterium rhinotracheale  and Corynebacterium pyogenes.

Pigs: is recommended for the treatment of respiratory or digestive infections, primary and secondary caused by: Pasteurella multocida, Actinobacillus pleuropneumoniae, Bordetella bronchiseptica, Salmonella spp., Escherichia coli, Haemophilus parasuis, Staphylococus spp, Streptococus suis, Corynebacterium pyogenes, Shigella spp., Klebsiella pneumoniae, Mycoplasma spp.

Fish: furunculosis, vibriosis, yersiniosis and other bacterial diseases produced by bacteria susceptible to florfenicol.


Chickens: the therapeutically dosage is 20 mg florfenicol/kg body weight/day (equivalent with 40 mg Florfenidem 50/ kg body weight) administered in feed, for 3-5 consecutive days.

Pigs: 200-400 g Florfenidem 50/1000 kg of feed, for 3-5 consecutive days.

Fish: Florfenidem 50 is administered mixed with feed, in dosage of 10-20 mg Florfenidem 50/kg fish/day, for 14 consecutive days.

The uptake of medicated feed is dependant on the clinical condition of animals. In order to obtain the correct dosage, the concentration in feed may have to be adjusted.

In some fish species the feed intake is dependant on water temperature. In order to obtain the correct dosage, the concentration in feed may have to be adjusted.


For any information about this veterinary medicinal product, please contact the local representative of the Marketing Authorization Holder.


Do not administer to animals susceptible to florfenicol.
The product should not be administered to sows in gestation and lactation period and breeding boars.

Side effects

Locomotion disorders may occur as a result of damage of joint cartilage in case that fluoroquinolones are used during the growing period.

Special precautions for storage

Keep away from reach and sight of children.

Keep in original packaging, at temperature below 25oC, protected from direct sunlight and moisture.

Shelf-life after first opening of primary package: 28 days.

Shelf life after incorporation into meal or pelleted feed: 7 days

Do not use after expiry date which is stated on the label.

Advice on correct administration

During treatment, the animals should eat only medicated feed. To ensure a correct dosage, body weight should be determined as accurately as possible to avoid underdosing. The product should be well mixed with the feed to be homogenous.

Withdrawal period

Chickens, pigs (meat and offal): 28 days from cessation of oral medication.

For fish meat: 180 degree-days from cessation of oral medication.

Not authorised for use in laying birds producing eggs for human consumption.

Special warnings

Due to the likely variability (time, geographical) in the occurrence of resistance of bacteria for florfenicol, bacteriological sampling and susceptibility testing, of the bacteria isolated from animal, are recommended. If this is not possible, therapy should be based on local (regional, farm level) epidemiological information about susceptibility of the target bacteria. Use of the product deviating from the instructions given may increase the prevalence of bacteria resistant to the florfenicol and may decrease the effectiveness of treatment with other amphenicols, due to the potential for cross-resistance. Official, national and regional antimicrobial policies should be taken into account when the product is used.

People with known hypersensitivity to any of the product ingredients should avoid contact with the veterinary medicinal product. To prevent any unpleasant effects, personal protective equipment consisting in gloves, goggles and protective dust masks should be worn when handling the product. In case of accidental ingestion or the occurrence of symptoms characterized by skin rash, seek medical advice. Serious symptoms such as swelling of face, lips or eye lids, accompanied by breath difficulties, need immediate medical attention.

Use with caution in pregnant animals or lactation and if is necessary, the administration should be evaluated by the veterinarian based on risk/benefit ratio.

The product should not be administered simultaneous with other products based on thiamphenicol or chloramphenicol.

In case of overdosage intolerance symptoms especially digestive may occur (diarrhea and vomitus). Remove medicated feed and institute the symptomatic therapy.

Special precautions for the disposal of unused product or waste materials

For the environmental protection, medicines should not be disposed of via wastewater or household waste. Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements.


Other information

Bags 10g, 25g, 50g, 100g, 500g, 1000g, 5kg, 10kg and 25kg.
Not all pack sizes may be marketed.

Important products

Delivering TRUST & QUALITY worldwide