Megestrol Acetate Dosing for Dogs, Cats, Horses By Weight
Important Safety Information
Use with caution and under veterinary supervision. Dosage varies significantly based on the specific condition being treated.
Consult with a veterinarian before administration. Not for use in pregnant animals.
Reference Source
Saunders Handbook of VETERINARY DRUGS, Page 512-513
Weight Unit Converter ▲
Weight Unit Converter ▼
| From: | To: |
Standard Dosage Guidelines
Small Animal Dosage
| Species | Condition | Dosage | Frequency/Duration |
|---|---|---|---|
| Dogs | Proestrus | 2 mg/kg | q24h PO for 8 days (early proestrus) |
| Anestrus | 0.5 mg/kg | q24h PO for 32 days | |
| Behavior Problems | 2-4 mg/kg | q24h for 8 days (reduce dose for maintenance) | |
| Cats | Dermatologic Therapy/Urine Spraying | 2.5-5 mg/cat | q24h PO for 1 week, then reduce to 5 mg once or twice weekly |
| Suppress Estrus | 5 mg/cat | daily for 3 days, then 2.5-5 mg once weekly for 10 weeks |
Large Animal Dosage
| Species | Condition | Dosage | Frequency |
|---|---|---|---|
| Horses | Suppress Estrus | 0.5 mg/kg | q24h PO |