Saturday 21 January

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

Fill out an Order Request Form


A light yellow to straw coloured solution for injection.
Each ml contains:
Active Substance:
Florfenicol 300 mg


Treatment of respiratory tract infections in clinically diseased
cattle due to Mannheimia haemolytica, Pasteurella multocida and
Histophilus somni, susceptible to Florfenicol

Treatment of acute outbreaks of respiratory disease caused by
strains of Actinobacillus pleuropneumoniae and Pasteurella
, susceptible to Florfenicol.

Dosage & Administration

Intramuscular Injection: 20 mg/kg bodyweight (1 ml/15 kg) to be administered twice 48 hours apart using a 16-gauge needle. Subcutaneous Injection: 40 mg/kg bodyweight (2 ml/15 kg) to be
administered once only using a 16-gauge needle. The dose volume given at any one injection site should not exceed 10 ml.
The injection should only be given in the neck.

Intramuscular Injection: 15 mg/kg bodyweight (1 ml per 20 kg) into the neck muscle twice at 48 hour intervals using a 16-gauge needle.
The volume administered per injection site should not exceed 3 ml.

Withdrawal Period

Meat and offal:
By intramuscular injection (at 20 mg/kg, twice): 39 days
By subcutaneous injection (at 40 mg/kg, once): 44 days

Not permitted for use in lactating animals producing milk for human consumption.

Meat and offal:
By intramuscular injection (at 15 mg/kg, twice): 22 days

Contraindictions, Warnings etc

Do not use in adult bulls or boars intended for breeding purposes.
Do not use in cases of hypersensitivity to the active substance or to any of the excipients.
Do not use in case of known resistance.

Pharmaceutical Precautions

Protect from light. Keep container in the protective sleeve/outer carton.


Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements.

Further Information

Click here to read the SPC.

Please note: Product information presented on this website is intended only as a brief summary of Norbrook products for your convenience. Not all products or indications are licensed in every country and may be subject to further local variations. For specific product information you should always consult a healthcare professional from your region. Please see our terms and conditions for further information.

If you are a veterinary surgeon and would like additional information on any of our products please email