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Dosage and administration
The recommended dosage rate is 7 mg/kg bodyweight once daily for up to 5 days by subcutaneous (dogs, cats), or intramuscular (dogs, cats, sheep, pigs, cattle) injection.
If the volume to be given is greater than 15 ml (cattle) and 5 ml (sheep and pigs), the dose should be divided and the remaining should be injected in another site.
The following is intended as a guide
Animal
Specimen
weight (kg)
Dose (volume)
Cattle
600
28.0
Store Cattle
200
 9.0
Calf
 50
 2.5
Sheep
 60
 3.0
Lamb
 10
 0.5
Pig
150
 7.5
Porker
 70
 3.5
Piglet
 7
 0.35
Dog  – large
 35
 1.5
– medium
 20
 1.0
– small
 10
 0.5
Cat
 5
 0.25
As a guide this is equivalent to 0.25 ml per 5 kg daily.
Shake the vial well to suspend the active ingredient before use. Swab the rubber septum and remove the required volume aseptically.
Massage the injection site after administration. Use a new anatomical site for repeated injections. To ensure the correct dosage, bodyweight should be determined as accurately as possible to avoid overdosing.
In common with other penicillin preparations hydrolysis takes place rapidly in the presence of water. It is important, therefore, that a dry syringe is used when extracting suspension for injection to avoid contaminating the remaining contents of the vial with drops of water.