Phenylbutazone Dosing for Dogs, Cats, Horses, Cattle, Pigs By Weight
Important Safety Information
Do not exceed 800 mg total in dogs. For horses, do not use highest dose for more than 48-96 hours and taper oral doses after 2-3 days.
Give IV injections only in horses - IM injections cause tissue irritation. Be aware of regulatory restrictions in cattle.
Reference Source
Saunders Handbook of VETERINARY DRUGS, Page 656-658
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Standard Dosage Guidelines
Small Animal Dosage
| Species | Route | Dosage | Frequency |
|---|---|---|---|
| Dogs | PO or IV | 15-22 mg/kg | q8-12h (800 mg max) |
| Cats | IV or PO | 6-8 mg/kg | q12h |
Large Animal Dosage
| Species | Route | Dosage | Frequency |
|---|---|---|---|
| Horses | PO | 4.4-8.8 mg/kg | Daily (taper after 2-3 days) |
| IV | 2.2-4.4 mg/kg | Daily for 48-96 hours | |
| Cattle | PO or IV | 17-25 mg/kg | Loading dose |
| PO or IV | 2.5-5 mg/kg | q24h maintenance | |
| Pigs | IV | 4 mg/kg | q24h |