Ampicillin, Ampicillin Sodium Dosage Calculator

Ampicillin, Ampicillin Sodium Dosage for Dogs, Cats, Horses, Cattle By Weight
Trade Names: Omnipen, Principen, Totacillin, Polycillin, Omnipen-N, Polycillin-N, Totacillin-N, Amp-Equine, Ampicillin trihydrate (Polyflex), Ampi-Tab
Functional classification: Antibacterial
Home

Ampicillin, Ampicillin Sodium Dosing for Dogs, Cats, Horses, Cattle By Weight

Important Safety Information

For resistant infections such as those caused by enterococci, doses as high as 100 mg/kg have been used in dogs.

For refractory infections in horses, doses up to 25-40 mg/kg every 6-8 hours may be used.

Reference Source

Saunders Handbook of VETERINARY DRUGS, Page 70-72

Weight Unit Converter ▲

Weight Unit Converter ▼

From: To:

Standard Dosage Guidelines

Small Animal Dosage

Species Route Dosage Frequency
Dogs IV, IM, SQ 10-20 mg/kg q6-8h
PO 20-40 mg/kg q8h
Cats IV, IM, SQ 10-20 mg/kg q6-8h
PO 20-40 mg/kg q8h

Ampicillin Trihydrate

Species Route Dosage Frequency
Dogs IM, SQ 10-50 mg/kg q12-24h
Cats IM, SQ 10-20 mg/kg q12-24h

Large Animal Dosage

Species Route Dosage Frequency
Horses IM, IV 6.6-20 mg/kg q6-8h
Cattle IM 4.4-11 mg/kg q24h