Furosemide Dosage Calculator

Furosemide Dosage for dogs, Cats, Horses, Cattle By Weight
Trade Names: Lasix and generic brands
Functional classification: Diuretic

Furosemide Dosing for dogs, Cats, Horses, Cattle By Weight

Important Safety Information

For acute cases in dogs: 2 mg/kg IV, followed by 2 mg/kg every 30 minutes until improvement is seen.

CRI for dogs: 0.66 mg/kg bolus dose IV, followed by 0.66 mg/kg/hr for 8 hours.

CRI for horses: 0.12 mg/kg IV followed by 0.12 mg/kg/hr IV.

Monitor electrolyte balance and hydration status during treatment.

Reference Source

Saunders Handbook of VETERINARY DRUGS, Page 373-375

Weight Unit Converter ▲

Weight Unit Converter ▼

From: To:

Standard Dosage Guidelines

Small Animal Dosage

Species Route Dosage Frequency
Dogs IV, IM, SQ, PO 2-6 mg/kg q8-12h (or as needed)
PO 2 mg/kg q12h (heart failure initial)
IV 2 mg/kg Every 30 min (acute cases)
CRI IV 0.66 mg/kg/hr 8 hours after bolus
Cats IV, IM, SQ, PO 1-4 mg/kg q8-24h

Large Animal Dosage

Species Route Dosage Frequency
Horses IM, IV 1 mg/kg q8h
IM, IV 250-500 mg/horse q6-8h
Cattle IM, IV 500 mg/animal or 250 mg/animal Once daily or twice daily