For treatment:
IM route: 20 mg/kg bodyweight (1 ml/15 kg) to be administered twice 48 hours apart.
SC route: 40 mg/kg bodyweight (2 ml/15 kg) to be administered once only using a 16 gauge needle.
For metaphylaxis where the presence of the disease in the herd has been established:
SC route: 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.
To ensure a correct dosage body weight should be determined as accurately as possible to avoid under dosing.
Use during pregnancy and lactation
Studies in laboratory animals have not revealed any evidence of embryo- or foetotoxic potential for florfenicol.
However, the effect of florfenicol on bovine reproductive performance and pregnancy has not been assessed. Use only accordingly to the benefit/risk assessment by the responsible veterinarian.