Erythromycin Dosing for Dogs, Cats, Horses, Cattle By Weight
Important Safety Information
In horses, erythromycin base tablets are poorly absorbed - use phosphate or estolate forms instead.
Use with caution in animals with liver impairment. Monitor for gastrointestinal side effects.
Reference Source
Saunders Handbook of VETERINARY DRUGS, Page 324-326
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Standard Dosage Guidelines
Small Animal Dosage
| Species | Route | Dosage | Frequency | Purpose |
|---|---|---|---|---|
| Dogs | PO | 10-20 mg/kg | q8-12h | General antibacterial |
| PO, IV | 0.5-1 mg/kg | q8-12h | Prokinetic effects (GI) | |
| Cats | PO | 10-20 mg/kg | q8-12h | General antibacterial |
| PO, IV | 0.5-1 mg/kg | q8-12h | Prokinetic effects (GI) |
Large Animal Dosage
| Species | Route | Dosage | Frequency | Purpose |
|---|---|---|---|---|
| Horses | PO | 25 mg/kg | q8h | R. equi infection |
| PO | 37.5 mg/kg | q12h | R. equi infection | |
| IV | 5 mg/kg | q4-6h | Antibacterial | |
| Horses | IV | 1 mg/kg | As needed | GI motility stimulation |
| Cattle | IM | 2.2-8.8 mg/kg | q24h | Abscesses, Pododermatitis |
| IM | 2.2-8.8 mg/kg | q24h | Pneumonia | |
| IM | 15 mg/kg | q12h | Pneumonia (high dose) | |
| IM | 8.8-10 mg/kg | Single dose | Rumen motility |